CA2055129A1 - Cam-lock busway joint assembly - Google Patents
Cam-lock busway joint assemblyInfo
- Publication number
- CA2055129A1 CA2055129A1 CA002055129A CA2055129A CA2055129A1 CA 2055129 A1 CA2055129 A1 CA 2055129A1 CA 002055129 A CA002055129 A CA 002055129A CA 2055129 A CA2055129 A CA 2055129A CA 2055129 A1 CA2055129 A1 CA 2055129A1
- Authority
- CA
- Canada
- Prior art keywords
- conductors
- joint
- busway
- pair
- activating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D473/00—Heterocyclic compounds containing purine ring systems
Abstract
ABSTRACT
A connector for electrically connecting a plurality of electrical conductors of a first busway section to a plurality of electrical conductors of a second busway section. The electrical connection is accomplished by a plurality of pairs of electrical joint connectors, each pair having an independently operable rotational clamping mechanism for clamping that pair of joint connectors tightly to corresponding electrical conductors of the first and second busway sections. An actuating cap is used to manually rotate the clamping mechanism between a first and second position. In the first position the pairs of joint connectors are clamped tightly to the busway conductors. In the second position the pairs of joint connectors are loosened permitting an easy insertion or removal of the busway conductors. The pairs of joint connectors of opposite polarity are separated from each other by a phase insulator. Phase insulators also separate the electrical phases from a protective enclosure surrounding the busway. The joint connectors, rotational clamping mechanism, and phase insulator are held in place by an electrically insulated frame comprised of two halves. The frame is held together by four assembly rods which pass through the two halves of the frame. A
cover plate for closing a joint access opening in the busway protective enclosure locks the rotational clamping mechanism in its first position preventing it from rotating to its second position.
A connector for electrically connecting a plurality of electrical conductors of a first busway section to a plurality of electrical conductors of a second busway section. The electrical connection is accomplished by a plurality of pairs of electrical joint connectors, each pair having an independently operable rotational clamping mechanism for clamping that pair of joint connectors tightly to corresponding electrical conductors of the first and second busway sections. An actuating cap is used to manually rotate the clamping mechanism between a first and second position. In the first position the pairs of joint connectors are clamped tightly to the busway conductors. In the second position the pairs of joint connectors are loosened permitting an easy insertion or removal of the busway conductors. The pairs of joint connectors of opposite polarity are separated from each other by a phase insulator. Phase insulators also separate the electrical phases from a protective enclosure surrounding the busway. The joint connectors, rotational clamping mechanism, and phase insulator are held in place by an electrically insulated frame comprised of two halves. The frame is held together by four assembly rods which pass through the two halves of the frame. A
cover plate for closing a joint access opening in the busway protective enclosure locks the rotational clamping mechanism in its first position preventing it from rotating to its second position.
Description
2`~ 9 OX~
CAM-LOCK BUSW~Y JOINT ASSEMBLY
FIELD OF l~IE INVENTION
The present inYention relates to a means ~or making ~
electrical con~ection be$ween ~ electlical conductor of a f irst busway sectiorl and an elect~ical conductor of a second busway section or between an eleetrical conductor of a busway section ~nd an elect~cal 1 0 conductor of a tap-o~ ~t, and more specifically to the use of a ro$ating cam mechanism for applying a clamping force on the joint connectors , _ to provide a positive electrical connection.
BACKGROUND OF~l~; INVENTION
l 5 Previous method~ of making the electrical connection between the conductors of two adjoining busway ection~ have employed a bolt or bolts as disclosed in IJ.S. 3,384,8~4 issued May 21, 1968, U.~.
4,820,177 issued April 11, 1989, U.S. 3,180,924 issued April 27, 1966 or U.S. 4,272,64B issued June 9, 1981. Other method~ of connecting 2 0 busway conductors have employed only spMngs to provide the clamping force re~uired for electrical connection.
SUMMARY OF THE INVENTION
This invention includes a plurality of independently and cam 2 5 operable joint connectQrs for connecting the electrical conductors of a first busway section to the electrical conductors of a second busway section. ~A rotating cam mechanism operated by an activating cap ~ ~J ~
- 2 - 0~-9044 applies the force required for making a good electrical connection between the busway conductors and the joint connectors. A plurality of phase insulators electrically separate the joint connectors OI opposite polarity from each other. A pair of elect~ically insulated ~rame halve~
5 are used to support the electrical co~nectors, the rotatillg eam mechanism, and the phase insulators. Four assembly rods, one in each corner of the frame, hold the assembly together. A cover plate placed over a joint inspection opening in the busway enclosure inhibits physical contact with live electrical conductors in the joint and also 1 0 provides a means ~or locking the activating caps in ~he tig~te~ed position to prevent any loosening of the elect~ical connection. It also provides a visual indication that the joint connectors are in the proper position for operation.
The cam-lock joint assembly of this inYe~tion requires only a V4 1 5 turn of the activating caps to provide the clamping force required for a tight electrical connection.
It is aIl object of this invention to provide an economical ready-operable joint assembly for the connection of electrical conductors of a firs$ busway section to the electrical conductors of a second busway 0 section.
Other features and ad~rantages of the invention will bel~ome apparent to those skilled in the art upon review of the following detailed description, claims and drawing3.
CAM-LOCK BUSW~Y JOINT ASSEMBLY
FIELD OF l~IE INVENTION
The present inYention relates to a means ~or making ~
electrical con~ection be$ween ~ electlical conductor of a f irst busway sectiorl and an elect~ical conductor of a second busway section or between an eleetrical conductor of a busway section ~nd an elect~cal 1 0 conductor of a tap-o~ ~t, and more specifically to the use of a ro$ating cam mechanism for applying a clamping force on the joint connectors , _ to provide a positive electrical connection.
BACKGROUND OF~l~; INVENTION
l 5 Previous method~ of making the electrical connection between the conductors of two adjoining busway ection~ have employed a bolt or bolts as disclosed in IJ.S. 3,384,8~4 issued May 21, 1968, U.~.
4,820,177 issued April 11, 1989, U.S. 3,180,924 issued April 27, 1966 or U.S. 4,272,64B issued June 9, 1981. Other method~ of connecting 2 0 busway conductors have employed only spMngs to provide the clamping force re~uired for electrical connection.
SUMMARY OF THE INVENTION
This invention includes a plurality of independently and cam 2 5 operable joint connectQrs for connecting the electrical conductors of a first busway section to the electrical conductors of a second busway section. ~A rotating cam mechanism operated by an activating cap ~ ~J ~
- 2 - 0~-9044 applies the force required for making a good electrical connection between the busway conductors and the joint connectors. A plurality of phase insulators electrically separate the joint connectors OI opposite polarity from each other. A pair of elect~ically insulated ~rame halve~
5 are used to support the electrical co~nectors, the rotatillg eam mechanism, and the phase insulators. Four assembly rods, one in each corner of the frame, hold the assembly together. A cover plate placed over a joint inspection opening in the busway enclosure inhibits physical contact with live electrical conductors in the joint and also 1 0 provides a means ~or locking the activating caps in ~he tig~te~ed position to prevent any loosening of the elect~ical connection. It also provides a visual indication that the joint connectors are in the proper position for operation.
The cam-lock joint assembly of this inYe~tion requires only a V4 1 5 turn of the activating caps to provide the clamping force required for a tight electrical connection.
It is aIl object of this invention to provide an economical ready-operable joint assembly for the connection of electrical conductors of a firs$ busway section to the electrical conductors of a second busway 0 section.
Other features and ad~rantages of the invention will bel~ome apparent to those skilled in the art upon review of the following detailed description, claims and drawing3.
BRIEF DESCRIPTION OF T~: DRA~ B
Fig. 1 is an isometric view of two adjoi~ing busway sections including an installed cover plate which covers the joint inspection opening between the two busway ~ections and locks the cam S mechanism in the tightened position.
Fig. 2 is an isometric view of a cam lock joint assembly.
Fig. 3 is an e~ploded view of a cam lock joint assembly.
Fig. 4 is a cross-sectional view along line 4-4 of Fig. 2 of a cam lock joint assembly showing the joint assembly Ln ths loosened position prior to înstalling the busway electrical conductors.
Fig. 5 is a cross-sectional view along lille 5-5 of Fig. 2 of the joint assembly taken through the activating shaf~c.
Fig. 6 is a cross-sectional view along line 4-4 of Fig. 2 of a cam lock joint assembly showing the joint in the tightened position with the l 5 busway conductors installed.
Fig. 7 is a front view of the cam plate showing the oval and spiral slots.
Fig. 8 is a back view of the activating cap showing the oval aperture.
2 0 Fig. 9 is a top view of a joint connector.
Fig. 10 is a side view of a joint connector.
Fig. 11 is a top ~ew of a cam activatirlg shaPc.
Fig. 12 is an edge view of a cam ac~vating shafl;.
Fig. 13 is a front view of the circular plate which is permanently 2 5 attached to one end of the cam activating shaPc.
, 2 ~
Fig. 1 is an isometric view of two adjoi~ing busway sections including an installed cover plate which covers the joint inspection opening between the two busway ~ections and locks the cam S mechanism in the tightened position.
Fig. 2 is an isometric view of a cam lock joint assembly.
Fig. 3 is an e~ploded view of a cam lock joint assembly.
Fig. 4 is a cross-sectional view along line 4-4 of Fig. 2 of a cam lock joint assembly showing the joint assembly Ln ths loosened position prior to înstalling the busway electrical conductors.
Fig. 5 is a cross-sectional view along lille 5-5 of Fig. 2 of the joint assembly taken through the activating shaf~c.
Fig. 6 is a cross-sectional view along line 4-4 of Fig. 2 of a cam lock joint assembly showing the joint in the tightened position with the l 5 busway conductors installed.
Fig. 7 is a front view of the cam plate showing the oval and spiral slots.
Fig. 8 is a back view of the activating cap showing the oval aperture.
2 0 Fig. 9 is a top view of a joint connector.
Fig. 10 is a side view of a joint connector.
Fig. 11 is a top ~ew of a cam activatirlg shaPc.
Fig. 12 is an edge view of a cam ac~vating shafl;.
Fig. 13 is a front view of the circular plate which is permanently 2 5 attached to one end of the cam activating shaPc.
, 2 ~
- 4 - 0~-004 DESCRIPTION OF THE PRE~ERRED EMBODl:MENT
An asselnbly as illustrated in Fig. 2 is used for conneeting a plurality of electrical conductors 14 of a first busway sec~on 18 with a plurality of electrical conductors 22 OI a ~econd adjoining busway S section 26 as shown in Fig. 1. A protective enclo~ure 30 comprised of a trough 34 and a cover 38 sulTounds and protects ~e conductors 14 and 22 from physical dama~e and provides protectîon against electrical shock. The assembly described herein relates to a low voltage, low amperage busway system although modificatior~s will become 1 0 apparent to adapt the assembly for higher rated buswa~ systems.
As shown in Fig. 4, two identical joint connectors 42 and 42' assembled in opposed relationship to each other fo~ a pair of joint connectors 64 which are utilized to connect an electrical conductor 14 of the first busway section 18 with a corresponding electrical conductor 1 5 22 of the second busway section 26. A pair of cam plates 54 and a pair of clamping rods 58 operating together apply a clamping force on the pair of joint connectors 64 to provide a positive electrical connection with the busway conductors 14 and 22. A~ shown in Fig. 2, a phase insulator 62 is placed between each pair of joint connectors 64 to 2 0 separate the electrical phases from each other and an insulator 62 is also placed between the outer most pairs of joint connectors 64 and the protective enclosure 30 to separate the outer electrical phases firom the protective enclosure 30. The joint connectors 42 and 42', cam plates 54, clamping rods ~8, and phase insulators 62 are mounted between a pair 2 5 of insulated frame halves 66 and 66'. Four assembly rods 70, one in each corner of the frame halves 66 and 66', hold a joint pack assembly 74 tsgether. The rod~ 70 are formed ~rom an insulat*e mate~al and 2 ~ 7.,~ 3 OX~4 are heated or otherwise deformed at opposite end~ adjacent the cutside of frame halves 66 a~d 66' to hold the joint pack assembly together.
A cover plate 78 installed o~er a joint inspection opening 82 in the busway enclo~ure cover 38 provides a means as will be hereinafter S further descr~bed for locking each pair of joint coImectors 64 in a first position wherein each pair o:t`joint connectors 64 is held tightly against the respective busway conductors 14 and 22. Ihe cover plate 78 also provides a bar~er to physical contact with the current carrgnng parts of the busway and joint assembly.
1 0 As shown in Fig. 9 a r~ctangularly shaped joint connector 42 or 42' includes a first end 90 which contacts the electrical conductor 14 of the first busway section 18, a second end 94 which contacts the electrical conductor 22 of the second busway s~ction 26 and a plurality of fingers 96 being parallel to one another and rurming perpendicular 1 5 to the ends 90 and 94 of the joint connector 42. As shown in Fig. 10 each joint connector also includes an outward bow 98 running between the ends 90 and 94 and an outward offset 102 running parallel to the ends 90 and 94 of the joint connector 42 which combine to form a flattened W-shape when the joint connector 42 i~ viewed from the side.
2 0 The offset 102 permits an easier insertion of the busway conductors 14 and 22 into the space between the pair of joint connectors 64.
The clamping means comp~ses a pair of circular cam plates 54 which are rotated by an activating shaft 106. An electrically insulated activating cap 110 is attached to one end of the activa~ng shaf~ 106 for 2 5 the purpose of manually rotating the activating shaflG 106 between a first position coinciding with a "closed" or "clamped" state and a second position coinciding with an "open" or "r21eased" state OI the L '~ ~
ff OX-0044 associated comlectors 64. As the cam plates 54 are rotated ~o the first position as shown in Fig. 6 they move a pair of clamping rods 58 which e~ert force on the bowed portion 98 of the opposed joint connector3 42 and 42'. This clamping force provides a good electrical connection between the joint cormectors 42 and 42' and the respective electrical conductors 14 and 22 of the busway. When 'che cam plates ~4 are rotated to the second positicn as shown in Fig. 4, the clamping rods 58 do not apply ~orce to the bowed portion 98 of the joint connectors 42 and 42'. VVhen the cam plates 54 are in this second position the conductors 1 0 14 and 22 may be easily removed or inserted into the space between the joint connec~ors 42 and 42'. Each cam plate ~4 includes all oval slot 114 for the passage of the activating shaft 106 and a pair of spiral slots 118 equally spaced about the oval slot 114 fior engaging the clamping rods 58. The activating shaft 106 includes a circular plate 122 pelmanently 1 5 fixed to one end of the shaft 106 and a plurality of small notches 126 along the edge of the shaft 106. The small notches 126 mark points for cutting the shaPc off depending on the width OI the busway conductors it is to be used with. The electrically insulated actival~ng cap 110 is attached to the end of the act*ating shaft 106 opposite the circular plate 2 0 122. The activating cap 110 i8 generally shaped like a top hat, a rectangular box like portion 134 exteIlding outward ~rom a flat circular portion 130 as shown in E`ig 3. An oval aperture 138, best seen in Fig 8, extends from the surface of the flat circular portion 130 into the rectangul~r box like portion 134 to receive one end of the activating 2 5 shaPc 106.
The joint pack assembly 74 consists of two insulated frame halves 66 and 66' assembled in opposed relationship to each other.
- 7 - 0~-004~
Each half of the frame 66 and 66' include~ an inside sur~ace 142 and an outside surface 146. A plurality of figure 8 ~haped apertures 1~0 connecting the inside surface 142 with the outsid~ surface 146 are equally spaced apart along the longitudinal a~ of the frame half 66 aIld 66'. The activating sha~s 106 pass through the figure 8-shaped apertures 150. A plurality of nalTow slot3 154 for captiva~ng the phase insulators 62 are equally spaced apart and parallel to one anothel on the inside surface 142 of the rame halves 66 andL 66'. The slots 154 run perpendicular to the longitudinal a~is of the frame halves 66 and 66'.
1 0 A plurality of circular recesses 158 on the inside surface 142 are concentric with the figure 8-shaped apertures 150 and receive the cam plates 54. A plurality of circular recesses 160 on the outside surface 146 are also concentric with the igure 8-shaped apertures 150. These circular recesses 160 receive either the circular plates 122 which are 1 5 permanently attached to one end of the activating shaf~ 106 or the activating caps 110 which are attached to the opposite end of the activating shat 106. A plurality of recessed areas 164 on the inside surface 142 receive the joint connectors 42 and 42'. A plurality of oval slots 168 located in the circular recesses 158 receive the clamping rods 2 0 58. A round aperture 172, in each of the four corners of the ~rame half 66 and 66' receives the assembly rods 70 which hold the joint pack assembly 74 together as previously describecl.
The cover plate 78 includes a plurality of substantially parallel rectangular slots 176 for locking the activating caps 110 in the first 2 5 position. The slots 176 are evenly spaced apart along the vert;ical axis of the cover plate 78 and placed at an angle which coincides with the acti~ating cap 110 ill it~ first position. Th0 ~lot8 176 will p~rmit th~
g- 0~-0044 rectangular portion 134 of the act*ating cap3 110 to pass through only when the activating caps 110 are in the first position wherein the joint ~onn0ction is tight. The cover plate 78 is at~ached to the busway enclosure cover 38 by a plurality of screw~ 180 or other fastening S means. When the cover plate 78 is secured to the busway enclosure cover 38, and the rectangular portion~ 134 of the activating caps 110 are protruding through the slots 176, the activating caps 11û are prohibited from rotating from their first position to their second position.
It is to be understood that the invention i9 not limited in its 1 0 application to the details of construction and description set forth above or illustrated in the drawings. The inven~ion is capable of other embodiments and of being practiced or carried out in various other ways. Also, it is to be understood that the phraseology and te~minology used herein is for the purpose of description and should not be 15 regarded as limiting.
, ,-
An asselnbly as illustrated in Fig. 2 is used for conneeting a plurality of electrical conductors 14 of a first busway sec~on 18 with a plurality of electrical conductors 22 OI a ~econd adjoining busway S section 26 as shown in Fig. 1. A protective enclo~ure 30 comprised of a trough 34 and a cover 38 sulTounds and protects ~e conductors 14 and 22 from physical dama~e and provides protectîon against electrical shock. The assembly described herein relates to a low voltage, low amperage busway system although modificatior~s will become 1 0 apparent to adapt the assembly for higher rated buswa~ systems.
As shown in Fig. 4, two identical joint connectors 42 and 42' assembled in opposed relationship to each other fo~ a pair of joint connectors 64 which are utilized to connect an electrical conductor 14 of the first busway section 18 with a corresponding electrical conductor 1 5 22 of the second busway section 26. A pair of cam plates 54 and a pair of clamping rods 58 operating together apply a clamping force on the pair of joint connectors 64 to provide a positive electrical connection with the busway conductors 14 and 22. A~ shown in Fig. 2, a phase insulator 62 is placed between each pair of joint connectors 64 to 2 0 separate the electrical phases from each other and an insulator 62 is also placed between the outer most pairs of joint connectors 64 and the protective enclosure 30 to separate the outer electrical phases firom the protective enclosure 30. The joint connectors 42 and 42', cam plates 54, clamping rods ~8, and phase insulators 62 are mounted between a pair 2 5 of insulated frame halves 66 and 66'. Four assembly rods 70, one in each corner of the frame halves 66 and 66', hold a joint pack assembly 74 tsgether. The rod~ 70 are formed ~rom an insulat*e mate~al and 2 ~ 7.,~ 3 OX~4 are heated or otherwise deformed at opposite end~ adjacent the cutside of frame halves 66 a~d 66' to hold the joint pack assembly together.
A cover plate 78 installed o~er a joint inspection opening 82 in the busway enclo~ure cover 38 provides a means as will be hereinafter S further descr~bed for locking each pair of joint coImectors 64 in a first position wherein each pair o:t`joint connectors 64 is held tightly against the respective busway conductors 14 and 22. Ihe cover plate 78 also provides a bar~er to physical contact with the current carrgnng parts of the busway and joint assembly.
1 0 As shown in Fig. 9 a r~ctangularly shaped joint connector 42 or 42' includes a first end 90 which contacts the electrical conductor 14 of the first busway section 18, a second end 94 which contacts the electrical conductor 22 of the second busway s~ction 26 and a plurality of fingers 96 being parallel to one another and rurming perpendicular 1 5 to the ends 90 and 94 of the joint connector 42. As shown in Fig. 10 each joint connector also includes an outward bow 98 running between the ends 90 and 94 and an outward offset 102 running parallel to the ends 90 and 94 of the joint connector 42 which combine to form a flattened W-shape when the joint connector 42 i~ viewed from the side.
2 0 The offset 102 permits an easier insertion of the busway conductors 14 and 22 into the space between the pair of joint connectors 64.
The clamping means comp~ses a pair of circular cam plates 54 which are rotated by an activating shaft 106. An electrically insulated activating cap 110 is attached to one end of the activa~ng shaf~ 106 for 2 5 the purpose of manually rotating the activating shaflG 106 between a first position coinciding with a "closed" or "clamped" state and a second position coinciding with an "open" or "r21eased" state OI the L '~ ~
ff OX-0044 associated comlectors 64. As the cam plates 54 are rotated ~o the first position as shown in Fig. 6 they move a pair of clamping rods 58 which e~ert force on the bowed portion 98 of the opposed joint connector3 42 and 42'. This clamping force provides a good electrical connection between the joint cormectors 42 and 42' and the respective electrical conductors 14 and 22 of the busway. When 'che cam plates ~4 are rotated to the second positicn as shown in Fig. 4, the clamping rods 58 do not apply ~orce to the bowed portion 98 of the joint connectors 42 and 42'. VVhen the cam plates 54 are in this second position the conductors 1 0 14 and 22 may be easily removed or inserted into the space between the joint connec~ors 42 and 42'. Each cam plate ~4 includes all oval slot 114 for the passage of the activating shaft 106 and a pair of spiral slots 118 equally spaced about the oval slot 114 fior engaging the clamping rods 58. The activating shaft 106 includes a circular plate 122 pelmanently 1 5 fixed to one end of the shaft 106 and a plurality of small notches 126 along the edge of the shaft 106. The small notches 126 mark points for cutting the shaPc off depending on the width OI the busway conductors it is to be used with. The electrically insulated actival~ng cap 110 is attached to the end of the act*ating shaft 106 opposite the circular plate 2 0 122. The activating cap 110 i8 generally shaped like a top hat, a rectangular box like portion 134 exteIlding outward ~rom a flat circular portion 130 as shown in E`ig 3. An oval aperture 138, best seen in Fig 8, extends from the surface of the flat circular portion 130 into the rectangul~r box like portion 134 to receive one end of the activating 2 5 shaPc 106.
The joint pack assembly 74 consists of two insulated frame halves 66 and 66' assembled in opposed relationship to each other.
- 7 - 0~-004~
Each half of the frame 66 and 66' include~ an inside sur~ace 142 and an outside surface 146. A plurality of figure 8 ~haped apertures 1~0 connecting the inside surface 142 with the outsid~ surface 146 are equally spaced apart along the longitudinal a~ of the frame half 66 aIld 66'. The activating sha~s 106 pass through the figure 8-shaped apertures 150. A plurality of nalTow slot3 154 for captiva~ng the phase insulators 62 are equally spaced apart and parallel to one anothel on the inside surface 142 of the rame halves 66 andL 66'. The slots 154 run perpendicular to the longitudinal a~is of the frame halves 66 and 66'.
1 0 A plurality of circular recesses 158 on the inside surface 142 are concentric with the figure 8-shaped apertures 150 and receive the cam plates 54. A plurality of circular recesses 160 on the outside surface 146 are also concentric with the igure 8-shaped apertures 150. These circular recesses 160 receive either the circular plates 122 which are 1 5 permanently attached to one end of the activating shaf~ 106 or the activating caps 110 which are attached to the opposite end of the activating shat 106. A plurality of recessed areas 164 on the inside surface 142 receive the joint connectors 42 and 42'. A plurality of oval slots 168 located in the circular recesses 158 receive the clamping rods 2 0 58. A round aperture 172, in each of the four corners of the ~rame half 66 and 66' receives the assembly rods 70 which hold the joint pack assembly 74 together as previously describecl.
The cover plate 78 includes a plurality of substantially parallel rectangular slots 176 for locking the activating caps 110 in the first 2 5 position. The slots 176 are evenly spaced apart along the vert;ical axis of the cover plate 78 and placed at an angle which coincides with the acti~ating cap 110 ill it~ first position. Th0 ~lot8 176 will p~rmit th~
g- 0~-0044 rectangular portion 134 of the act*ating cap3 110 to pass through only when the activating caps 110 are in the first position wherein the joint ~onn0ction is tight. The cover plate 78 is at~ached to the busway enclosure cover 38 by a plurality of screw~ 180 or other fastening S means. When the cover plate 78 is secured to the busway enclosure cover 38, and the rectangular portion~ 134 of the activating caps 110 are protruding through the slots 176, the activating caps 11û are prohibited from rotating from their first position to their second position.
It is to be understood that the invention i9 not limited in its 1 0 application to the details of construction and description set forth above or illustrated in the drawings. The inven~ion is capable of other embodiments and of being practiced or carried out in various other ways. Also, it is to be understood that the phraseology and te~minology used herein is for the purpose of description and should not be 15 regarded as limiting.
, ,-
Claims (11)
1. A connector for electrically connecting a plurality of electrical conductors of a first busway section respectively to one of a plurality of electrical conductors of a second busway section comprising:
a plurality of pairs of joint connectors for electrically connecting the conductors of the first busway section respectively to one of the electrical conductors of the second busway section;
a plurality of clamping means, each clamping means for independently clamping a respective pair of said joint connectors to a tightened position in pressure engagement with the respective electrical conductors of the first and second busway sections thereby providing a positive electrical connection between the conductors of said first busway section and the conductors of said second busway section;
a plurality of phase insulators for electrically separating said pairs of joint connectors from each other;
a frame comprised of two halves being spaced apart and in opposed relationship to each other, said frame carrying said joint connectors, said clamping means, and said phase insulators;
a plurality of assembly rods connecting said frame halves together; and locking means for locking said clamping means in the tightened position to prevent loosening of the electrical connection between the conductors of the first and second busway sections, said locking means also providing a visual indication as to whether said clamping means is in the tightened position.
a plurality of pairs of joint connectors for electrically connecting the conductors of the first busway section respectively to one of the electrical conductors of the second busway section;
a plurality of clamping means, each clamping means for independently clamping a respective pair of said joint connectors to a tightened position in pressure engagement with the respective electrical conductors of the first and second busway sections thereby providing a positive electrical connection between the conductors of said first busway section and the conductors of said second busway section;
a plurality of phase insulators for electrically separating said pairs of joint connectors from each other;
a frame comprised of two halves being spaced apart and in opposed relationship to each other, said frame carrying said joint connectors, said clamping means, and said phase insulators;
a plurality of assembly rods connecting said frame halves together; and locking means for locking said clamping means in the tightened position to prevent loosening of the electrical connection between the conductors of the first and second busway sections, said locking means also providing a visual indication as to whether said clamping means is in the tightened position.
2. A connector as claimed in claim 1 wherein said joint connectors are generally rectangular and have a flattened W-shaped cross-section, said joint connectors are assembled in pairs in opposed relationship to each other, each pair connecting one electrical phase of the busway conductors and, each said joint connector further comprising:
a first end for connecting to the conductors of the first busway section;
a second end for connecting to the conductors of the second busway section;
a plurality of fingers each being parallel to one another and being perpendicular to and running inward from each said first and second ends, each said finger having an offset for permitting easier entrance of the busway conductor between opposed pairs of said joint connectors.
a first end for connecting to the conductors of the first busway section;
a second end for connecting to the conductors of the second busway section;
a plurality of fingers each being parallel to one another and being perpendicular to and running inward from each said first and second ends, each said finger having an offset for permitting easier entrance of the busway conductor between opposed pairs of said joint connectors.
3. A connector for electrically connecting a plurality of electrical conductors of a first busway section respectively to one of a plurality of electrical conductors of a second busway section comprising:
a plurality of pairs of joint connectors for electrically connecting the conductors of the first busway section respectively to one of the electrical conductors of the second busway section;
a plurality of clamping means for independently clamping each pair of said joint connectors to a tightened position in pressure engagement with the respective electrical conductors of the first and second busway sections thereby providing a positive electrical connection between the conductors of said first busway section and the conductors of said second busway section;
a plurality of phase insulators for electrically separating said pairs of joint connectors from each other;
a frame comprised of two halves being spaced apart and in opposed relationship to each other, said frame carrying said joint connectors, said clamping means, and said phase insulators;
a plurality of assembly rods connecting said frame halves together;
locking means for locking said clamping means in the tightened position to prevent loosening of the electrical connection between the conductors of the first and second busway sections, said locking means also providing a visual indication as to whether said clamping means is in the tightened position; and said clamping means further comprising:
a plurality of flat activating shafts for mechanically operating said clamping means;
a plurality of metallic clamping rods which apply a force to said joint connectors;
a plurality of circular cam plates which are slidably mounted on said activating shafts and move said clamping rods when said activating shafts are rotated; and a plurality of activating caps for rotating said activating shafts.
a plurality of pairs of joint connectors for electrically connecting the conductors of the first busway section respectively to one of the electrical conductors of the second busway section;
a plurality of clamping means for independently clamping each pair of said joint connectors to a tightened position in pressure engagement with the respective electrical conductors of the first and second busway sections thereby providing a positive electrical connection between the conductors of said first busway section and the conductors of said second busway section;
a plurality of phase insulators for electrically separating said pairs of joint connectors from each other;
a frame comprised of two halves being spaced apart and in opposed relationship to each other, said frame carrying said joint connectors, said clamping means, and said phase insulators;
a plurality of assembly rods connecting said frame halves together;
locking means for locking said clamping means in the tightened position to prevent loosening of the electrical connection between the conductors of the first and second busway sections, said locking means also providing a visual indication as to whether said clamping means is in the tightened position; and said clamping means further comprising:
a plurality of flat activating shafts for mechanically operating said clamping means;
a plurality of metallic clamping rods which apply a force to said joint connectors;
a plurality of circular cam plates which are slidably mounted on said activating shafts and move said clamping rods when said activating shafts are rotated; and a plurality of activating caps for rotating said activating shafts.
4. A connector as claimed in claim 3 wherein each said cam plate includes an oval slot in the center thereof for slidably placing said cam plate on said flat activating shaft and a pair of spiraling slots being equally spaced apart about the longitudinal axis of said oval slot for engaging said clamping rods.
5. A connector as claimed in claim 3 wherein each said activating cap is made of an insulating material and generally top hat-shaped such that a generally rectangular box like portion extends outward from a flat circular portion and includes therein an oval aperture on said flat circular portion which extends into said rectangular box like portion for slidably receiving one end of said activating shaft.
6. A connector as claimed in claim 3 wherein each said flat activating shaft comprises:
a circular disk permanently fixed to one end of said activating shaft; and a plurality of notches along said activating shaft for marking cut-off points determined by the width of the busway conductors.
a circular disk permanently fixed to one end of said activating shaft; and a plurality of notches along said activating shaft for marking cut-off points determined by the width of the busway conductors.
7. A connector as claimed in claim 3 wherein each said mounting frame half is made of an electrically insulating material and includes an inside surface; an outside surface; a plurality of figure 8-shaped apertures passing from said inside surface to said outside surface and being equally spaced apart and placed such that the minor axis of said figure 8-shaped aperture coincides with the longitudinal axis of said frame half, said apertures receive said activating shafts; a plurality of circular recesses on said inside surface being concentric about said figure 8-shaped apertures, for receiving said cam plates; a pair of oval slots being inside each said circular recess on said inside surface and placed such that the longitudinal axis of said slots coincides with the longitudinal axis of said frame half, for receiving said clamping rods; a plurality of narrow slots on said inside surface being perpendicular to the longitudinal axis of said frame half for captivating said phase insulators; a plurality of recessed areas on said inside surface of said frame for receiving said joint connectors, said recesses being symmetrical about the longitudinal axis of said frame; a plurality of circular recesses on said outside surface being concentric about said figure 8-shaped apertures, for receiving said circular plates fixed to said activating shafts and said activating caps; and a plurality of round apertures, one in each corner of said frame half, for receiving said assembly rods which hold said insulated frame halves together.
8. A connector as claimed in claim 3 wherein the first and second busway sections each include a protective enclosure with an access opening on one side at the joint area for installing and viewing said joint connecting assembly and wherein said locking means comprises:
a cover plate, generally rectangular in shape and including a plurality of rectangular apertures for accepting said rectangular box like portions of said activating caps, said apertures being evenly spaced apart along the longitudinal axis of said cover plate and at an angle such that said rectangular box like portions of said activating caps can only pass through said apertures when said caps are rotated to the clamped joint position, and;
means for attaching said cover plate to the busway protective enclosures of the first and second busway sections such that the access opening is closed.
a cover plate, generally rectangular in shape and including a plurality of rectangular apertures for accepting said rectangular box like portions of said activating caps, said apertures being evenly spaced apart along the longitudinal axis of said cover plate and at an angle such that said rectangular box like portions of said activating caps can only pass through said apertures when said caps are rotated to the clamped joint position, and;
means for attaching said cover plate to the busway protective enclosures of the first and second busway sections such that the access opening is closed.
9. A connector for respectively connecting a plurality of conductors of a first busway section to a respective one of a plurality of conductors of a second busway section comprising:
a pair of opposite frame members;
a plurality of pairs of joint connectors intermediate said frame members, each pair of said joint connectors associated with a respective one of said conductors of said first busway section and a respective one of said conductors of said second busway section and moveable between a first position wherein said associated conductors are clamped between said joint connectors to provide good electrical connection therethrough and a second position wherein said conductors are released from said associated conductors to permit removal of said conductors from between said connectors; and clamping means which can be rotated for independently moving each said pairs of joint connectors alternately between said first position and said second position.
a pair of opposite frame members;
a plurality of pairs of joint connectors intermediate said frame members, each pair of said joint connectors associated with a respective one of said conductors of said first busway section and a respective one of said conductors of said second busway section and moveable between a first position wherein said associated conductors are clamped between said joint connectors to provide good electrical connection therethrough and a second position wherein said conductors are released from said associated conductors to permit removal of said conductors from between said connectors; and clamping means which can be rotated for independently moving each said pairs of joint connectors alternately between said first position and said second position.
10. A connector as claimed in claim 9 wherein said rotational clamping means includes a pair of cam plates associated with each pair of said joint connectors, each pair of cam plates positioned on opposite sides of its associated joint connector intermediate said joint connector and a respective frame member, each cam plate including a pair of spiral slots, each frame member having portions defining oval slots;
a pair of clamping rods associated with each pair of cam plates, said clamping rods extending between said cam plates and received within one of said respective spiral slots in each cam plate, said clamping rods each having its opposite ends received within one of said oval slots, said joint connectors positioned intermediate said clamping rods; and activating means for independently rotating each pair of said cam plates and causing said clamping rods to move within said spiral slots and said oval slots between a first position wherein said connectors are clamped to said associated conductors and a second position wherein said connector are released from said associated conductors.
a pair of clamping rods associated with each pair of cam plates, said clamping rods extending between said cam plates and received within one of said respective spiral slots in each cam plate, said clamping rods each having its opposite ends received within one of said oval slots, said joint connectors positioned intermediate said clamping rods; and activating means for independently rotating each pair of said cam plates and causing said clamping rods to move within said spiral slots and said oval slots between a first position wherein said connectors are clamped to said associated conductors and a second position wherein said connector are released from said associated conductors.
11. A connector for connecting a first conductor to a second conductor comprising:
a pair of opposite frame members, said frame members each having a recessed area forming a pair of support channels within said recessed area;
a pair of joint connectors including an upper joint plate and a lower joint plate positioned to receive said first conductor and said second conductor therebetween, said joint plates respectively supported intermediate said frame members by said support channels; an activating cap carried by one of said frame members and rotatably movable between a first position and a second position; clamping means for biasing said upper joint plate and said lower joint plate toward each other for providing good electrical connection between said conductors in response to movement of said activating cap to said first position and for releasing said bias from said upper joint plate and said lower joint plate to release said conductors from said good electrical contact to permit removal of said conductors from said joint plates in response to movement of said activating cap to said second position said clamping means including a pair of circular cam plates, an activating shaft connected to said activating cap and extending through a central opening in each of said cam plates, and a pair of clamping rods each extending through a respective pair of peripheral openings in said cam plates, said pair of joint connectors positioned intermediate said pair of clamping rods.
a pair of opposite frame members, said frame members each having a recessed area forming a pair of support channels within said recessed area;
a pair of joint connectors including an upper joint plate and a lower joint plate positioned to receive said first conductor and said second conductor therebetween, said joint plates respectively supported intermediate said frame members by said support channels; an activating cap carried by one of said frame members and rotatably movable between a first position and a second position; clamping means for biasing said upper joint plate and said lower joint plate toward each other for providing good electrical connection between said conductors in response to movement of said activating cap to said first position and for releasing said bias from said upper joint plate and said lower joint plate to release said conductors from said good electrical contact to permit removal of said conductors from said joint plates in response to movement of said activating cap to said second position said clamping means including a pair of circular cam plates, an activating shaft connected to said activating cap and extending through a central opening in each of said cam plates, and a pair of clamping rods each extending through a respective pair of peripheral openings in said cam plates, said pair of joint connectors positioned intermediate said pair of clamping rods.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US60365390A | 1990-10-25 | 1990-10-25 | |
| US07/630,653 | 1990-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2055129A1 true CA2055129A1 (en) | 1992-06-21 |
Family
ID=24416375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002055129A Abandoned CA2055129A1 (en) | 1990-10-25 | 1991-11-07 | Cam-lock busway joint assembly |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU9024591A (en) |
| CA (1) | CA2055129A1 (en) |
| WO (1) | WO1992007852A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9020959D0 (en) * | 1990-09-26 | 1990-11-07 | Beecham Group Plc | Novel compounds |
| US5990095A (en) | 1991-07-03 | 1999-11-23 | Hyal Pharmaceutical Corporation | Use of hyaluronic acid and forms to prevent arterial restenosis |
| SE9903028D0 (en) | 1999-08-27 | 1999-08-27 | Astra Ab | New use |
| US8969514B2 (en) | 2007-06-04 | 2015-03-03 | Synergy Pharmaceuticals, Inc. | Agonists of guanylate cyclase useful for the treatment of hypercholesterolemia, atherosclerosis, coronary heart disease, gallstone, obesity and other cardiovascular diseases |
| AU2008261102B2 (en) | 2007-06-04 | 2013-11-28 | Bausch Health Ireland Limited | Agonists of guanylate cyclase useful for the treatment of gastrointestinal disorders, inflammation, cancer and other disorders |
| EP2810951B1 (en) | 2008-06-04 | 2017-03-15 | Synergy Pharmaceuticals Inc. | Agonists of guanylate cyclase useful for the treatment of gastrointestinal disorders, inflammation, cancer and other disorders |
| ES2624828T3 (en) | 2008-07-16 | 2017-07-17 | Synergy Pharmaceuticals Inc. | Guanylate cyclase agonists useful for the treatment of gastrointestinal disorders, inflammation, cancer and others |
| US9616097B2 (en) | 2010-09-15 | 2017-04-11 | Synergy Pharmaceuticals, Inc. | Formulations of guanylate cyclase C agonists and methods of use |
| CA2905438A1 (en) | 2013-03-15 | 2014-09-25 | Synergy Pharmaceuticals Inc. | Agonists of guanylate cyclase and their uses |
| WO2014151200A2 (en) | 2013-03-15 | 2014-09-25 | Synergy Pharmaceuticals Inc. | Compositions useful for the treatment of gastrointestinal disorders |
| KR102272746B1 (en) | 2013-06-05 | 2021-07-08 | 보슈 헬스 아일랜드 리미티드 | Ultra-pure agonists of guanylate cyclase c, method of making and using same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1334092C (en) * | 1986-07-11 | 1995-01-24 | David John Carini | Angiotensin ii receptor blocking imidazoles |
| US4880804A (en) * | 1988-01-07 | 1989-11-14 | E. I. Du Pont De Nemours And Company | Angiotensin II receptor blocking benzimidazoles |
| US5015651A (en) * | 1988-01-07 | 1991-05-14 | E. I. Du Pont De Nemours And Company | Treatment of hypertension with 1,2,4-angiotensin II antagonists |
| IL94390A (en) * | 1989-05-30 | 1996-03-31 | Merck & Co Inc | Di-substituted imidazo fused 6-membered nitrogen-containing heterocycles and pharmaceutical compositions containing them |
| IL96019A0 (en) * | 1989-10-31 | 1991-07-18 | Fujisawa Pharmaceutical Co | Imidazole derivatives,processes for the preparation thereof and pharmaceutical compositions containing the same |
| EP0430300A3 (en) * | 1989-12-01 | 1992-03-25 | Takeda Chemical Industries, Ltd. | Xanthine derivatives, their production and use |
-
1991
- 1991-10-16 AU AU90245/91A patent/AU9024591A/en not_active Abandoned
- 1991-10-16 WO PCT/US1991/007426 patent/WO1992007852A1/en active Application Filing
- 1991-11-07 CA CA002055129A patent/CA2055129A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO1992007852A1 (en) | 1992-05-14 |
| AU9024591A (en) | 1992-05-26 |
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| Date | Code | Title | Description |
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| FZDE | Dead |