EP0751271B1 - Tubular mast door - Google Patents
Tubular mast door Download PDFInfo
- Publication number
- EP0751271B1 EP0751271B1 EP19960304683 EP96304683A EP0751271B1 EP 0751271 B1 EP0751271 B1 EP 0751271B1 EP 19960304683 EP19960304683 EP 19960304683 EP 96304683 A EP96304683 A EP 96304683A EP 0751271 B1 EP0751271 B1 EP 0751271B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- door
- mast
- hinge
- retaining means
- connecting piece
- 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.)
- Expired - Lifetime
Links
- 238000007689 inspection Methods 0.000 claims description 9
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 2
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D3/00—Hinges with pins
- E05D3/06—Hinges with pins with two or more pins
- E05D3/12—Hinges with pins with two or more pins with two parallel pins and one arm
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/003—Access covers or locks therefor
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D7/00—Hinges or pivots of special construction
- E05D7/12—Hinges or pivots of special construction to allow easy detachment of the hinge from the wing or the frame
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
- E05Y2900/13—Type of wing
- E05Y2900/132—Doors
Definitions
- the invention relates to doors of the kind used for covering an opening in a tubular mast.
- Tubular masts are widely used as lamp posts, flag poles, roadside signals and the like and are typically made of metal. In most cases, such tubular masts are provided with an opening in their lower region to provide access for inspection or maintenance of the electrical equipment inside or to provide access to the flag raising and lowering mechanism as the case may be. It is usually necessary to provide the inspection opening with a cover such as a lid or door both to protect members of the public from potentially hazardous electrical equipment and also to protect the equipment within the mast from damage caused by vandals or other unauthorised use or abuse of the equipment.
- Covers for this purpose have been disclosed in prior proposals such as NL 147,222. These covers have upper and lower latches.
- the upper latch may be loosened by unscrewing, allowing the cover to be raised and the bottom latch to escape outwardly from the opening.
- the cover is then slid downwardly to release the upper latch from the opening and the door is then completely detached from the mast.
- the cover is removed completely, particularly for long periods of time, then there is a risk of losing the cover.
- the present invention provides a door for covering an inspection opening in a tubular mast; said door being connectable to said mast by a disconnectable hinge means; said disconnectable hinge means comprising a retaining means and a hinge pin that is slidable transversely with respect to its length in said retaining means; another part of said disconnectable hinge means being connected to, and pivotable with, said hinge pin relative to said retaining means; and wherein said retaining means comprises a hook-shaped piece and said hinge pin is slidable out of retention by said retaining means.
- Providing a hinge enables the door to remain attached to the mast when in the open position and the slidable arrangement of the hinge pin in the retaining means permits the same opening procedure to be adhered to as with prior covers which is convenient for maintenance staff who may be unaware of the presence of any hinge. Furthermore, since the hinge is disconnectable, the door can be removed entirely if so desired.
- the hinge pin is provided on a connecting piece which is joined by a further hinge means to a fixing piece.
- the connecting piece is substantially U-shaped, and the hinge pin and the further hinge means are provided one at each tip of the U-shaped piece respectively.
- the fixing piece is attached to the door and the retaining means is attached to the tubular mast.
- the disconnectable hinge means further comprises an abutment screw having a first position in which the door cannot be removed from the mast and a second position in which the door can be removed and reattached to the mast; the door being openable and closeable with the abutment screw in both the first and second positions.
- the abutment screw permits the door to hinge open and closed in the usual manner, but inhibits inadvertent detachment of the door from the mast.
- the abutment screw is provided on the connecting piece and when the hinge pin is slid so as to attempt to disengage it from retention by the retaining means, the abutment screw in its first position abuts a lip of the opening in the tubular mast, thereby preventing removal of the door.
- the disconnectable hinge means for the tubular mast door shown in Figures 9 (a), (b), and (c) comprises a fixing piece 10, a U-shaped connecting piece 12, and a hook-shaped retaining means 14.
- the connecting piece is provided with a hinge pin 16 that can slide transversely of its axis inside the retaining means 14.
- a further hinge means 18 is provided which pivotally joins the connecting piece 12 to the fixing piece 10, which is provided with a protrusion 20.
- the connecting piece 12 is formed with a recess or groove 22, into which an abutment screw 24 projects.
- Figure 1 shows a tubular mast 26 with a door 28 in a nearly fully closed position.
- the fixing piece 10 is secured to the door 28 and the retaining means is secured to the mast 26.
- Holes are provided in the fixing piece 10 and retaining means 14 for securing them to the door and to the tubular mast respectively, by means of, for example, bolts or rivets.
- the latch bolt 30 has been shown unscrewed slightly to loosen the upper latch 32 to allow the door 28 to tilt away from the mast 26 at the upper end.
- the latch 32 holds the upper end portion of the door 28 flush against the mast 26, and the lower end portion of the door 28 is held flush against the mast 26 by the lip of the inspection opening being interposed between the lower end portion of the door 28 and the protrusion 20 of the fixing piece 10.
- the door 28 may be slid upwards to the position shown in Figure 2. This moves the lip of the opening out from between the lower end portion of the door 28 and the protrusion 20 on the fixing piece 10.
- the hinge pin 16 of the disconnectable hinge means slides transversely with respect to its length within the retaining means 14.
- the lower end of the door 28 may be moved away from the mast to incline the door 28 as in Figure 3.
- the connecting piece 12 rotates, pivoting about the disconnectable hinge means joining the connecting piece 12 to the retaining means 14, and about the further hinge means 18 joining the connecting piece 12 to the fixing piece 10.
- the door 28 can be slid downwards from the position of Figure 3 to disengage the latch 32 from the upper end of the door 28 from the lip of the opening as shown in Figure 4.
- the lower lip of the opening enters a recess 22 in the connecting piece 12 and contacts the abutment screw 24.
- the abutment screw 24 prevents the connecting piece 12 from sliding further down and stops the hinge pin 16 disengaging from under the retaining means 14.
- the connecting piece 12 holds the lower end portion of the door 28 spaced apart from the mast 26, conveniently permitting the door 28 to rotate about the further hinge means 18 to depend downwardly against the mast 26 as shown in Figure 5.
- the inspection opening is now fully accessible, but the door 28 is still retained on the mast. The reverse procedure is used to close the door 28 over the inspection opening.
- the abutment screw 24 is unscrewed so that it no longer projects into the recess 22 in the connecting piece 12 and the lower lip of the opening can project further into the recess 22 so that the connecting piece moves downward to the position as shown in Figure 6. If the door is then rotated to the position shown in Figure 7, it is possible to tilt the connecting piece 12 so that the hinge pin 16 is released from beneath the hook-shaped retaining means 14. The door 28 can be lifted upwardly from the resulting position in Figure 8 and removed completely from the mast 26. To reattach the door 28 to the mast 26, the reverse procedure is followed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Hinges (AREA)
Description
- The invention relates to doors of the kind used for covering an opening in a tubular mast.
- Tubular masts are widely used as lamp posts, flag poles, roadside signals and the like and are typically made of metal. In most cases, such tubular masts are provided with an opening in their lower region to provide access for inspection or maintenance of the electrical equipment inside or to provide access to the flag raising and lowering mechanism as the case may be. It is usually necessary to provide the inspection opening with a cover such as a lid or door both to protect members of the public from potentially hazardous electrical equipment and also to protect the equipment within the mast from damage caused by vandals or other unauthorised use or abuse of the equipment.
- Covers for this purpose have been disclosed in prior proposals such as NL 147,222. These covers have upper and lower latches. The upper latch may be loosened by unscrewing, allowing the cover to be raised and the bottom latch to escape outwardly from the opening. The cover is then slid downwardly to release the upper latch from the opening and the door is then completely detached from the mast. However if the cover is removed completely, particularly for long periods of time, then there is a risk of losing the cover.
- Accordingly the present invention provides a door for covering an inspection opening in a tubular mast; said door being connectable to said mast by a disconnectable hinge means; said disconnectable hinge means comprising a retaining means and a hinge pin that is slidable transversely with respect to its length in said retaining means; another part of said disconnectable hinge means being connected to, and pivotable with, said hinge pin relative to said retaining means; and wherein said retaining means comprises a hook-shaped piece and said hinge pin is slidable out of retention by said retaining means.
- Providing a hinge enables the door to remain attached to the mast when in the open position and the slidable arrangement of the hinge pin in the retaining means permits the same opening procedure to be adhered to as with prior covers which is convenient for maintenance staff who may be unaware of the presence of any hinge. Furthermore, since the hinge is disconnectable, the door can be removed entirely if so desired.
- Advantageously the hinge pin is provided on a connecting piece which is joined by a further hinge means to a fixing piece.
- Beneficially the connecting piece is substantially U-shaped, and the hinge pin and the further hinge means are provided one at each tip of the U-shaped piece respectively.
- Preferably the fixing piece is attached to the door and the retaining means is attached to the tubular mast.
- Advantageously the disconnectable hinge means further comprises an abutment screw having a first position in which the door cannot be removed from the mast and a second position in which the door can be removed and reattached to the mast; the door being openable and closeable with the abutment screw in both the first and second positions.
- The abutment screw permits the door to hinge open and closed in the usual manner, but inhibits inadvertent detachment of the door from the mast.
- Preferably the abutment screw is provided on the connecting piece and when the hinge pin is slid so as to attempt to disengage it from retention by the retaining means, the abutment screw in its first position abuts a lip of the opening in the tubular mast, thereby preventing removal of the door.
- The invention will now be described by way of example only with reference to the accompanying drawings in which:
- Figures 1 to 5 illustrate the procedure for opening a door according to the invention;
- Figures 6 to 8 illustrate the procedure for detaching a door according to the invention from a tubular mast; and
- Figures 9 (a), (b), and (c) show three views of a disconnectable hinge means for a door according to the invention.
-
- The disconnectable hinge means for the tubular mast door shown in Figures 9 (a), (b), and (c) comprises a
fixing piece 10, aU-shaped connecting piece 12, and a hook-shaped retaining means 14. - The connecting piece is provided with a
hinge pin 16 that can slide transversely of its axis inside theretaining means 14. A further hinge means 18 is provided which pivotally joins the connectingpiece 12 to thefixing piece 10, which is provided with aprotrusion 20. The connectingpiece 12 is formed with a recess orgroove 22, into which an abutment screw 24 projects. - Figure 1 shows a
tubular mast 26 with adoor 28 in a nearly fully closed position. Thefixing piece 10 is secured to thedoor 28 and the retaining means is secured to themast 26. Holes are provided in thefixing piece 10 and retaining means 14 for securing them to the door and to the tubular mast respectively, by means of, for example, bolts or rivets. In this figure thelatch bolt 30 has been shown unscrewed slightly to loosen theupper latch 32 to allow thedoor 28 to tilt away from themast 26 at the upper end. In the fully closed position, thelatch 32 holds the upper end portion of thedoor 28 flush against themast 26, and the lower end portion of thedoor 28 is held flush against themast 26 by the lip of the inspection opening being interposed between the lower end portion of thedoor 28 and theprotrusion 20 of thefixing piece 10. - With the
latch 32 loosened as in Figure 1, thedoor 28 may be slid upwards to the position shown in Figure 2. This moves the lip of the opening out from between the lower end portion of thedoor 28 and theprotrusion 20 on thefixing piece 10. On sliding thedoor 28 to the position of Figure 2, thehinge pin 16 of the disconnectable hinge means slides transversely with respect to its length within the retaining means 14. - From the position of Figure 2, the lower end of the
door 28 may be moved away from the mast to incline thedoor 28 as in Figure 3. In this motion, the connectingpiece 12 rotates, pivoting about the disconnectable hinge means joining the connectingpiece 12 to theretaining means 14, and about the further hinge means 18 joining the connectingpiece 12 to thefixing piece 10. - The
door 28 can be slid downwards from the position of Figure 3 to disengage thelatch 32 from the upper end of thedoor 28 from the lip of the opening as shown in Figure 4. The lower lip of the opening enters arecess 22 in the connectingpiece 12 and contacts theabutment screw 24. Theabutment screw 24 prevents the connectingpiece 12 from sliding further down and stops thehinge pin 16 disengaging from under the retaining means 14. In this position the connectingpiece 12 holds the lower end portion of thedoor 28 spaced apart from themast 26, conveniently permitting thedoor 28 to rotate about the further hinge means 18 to depend downwardly against themast 26 as shown in Figure 5. The inspection opening is now fully accessible, but thedoor 28 is still retained on the mast. The reverse procedure is used to close thedoor 28 over the inspection opening. - If it should be desired to remove the door completely from the mast, the
abutment screw 24 is unscrewed so that it no longer projects into therecess 22 in the connectingpiece 12 and the lower lip of the opening can project further into therecess 22 so that the connecting piece moves downward to the position as shown in Figure 6. If the door is then rotated to the position shown in Figure 7, it is possible to tilt the connectingpiece 12 so that thehinge pin 16 is released from beneath the hook-shaped retaining means 14. Thedoor 28 can be lifted upwardly from the resulting position in Figure 8 and removed completely from themast 26. To reattach thedoor 28 to themast 26, the reverse procedure is followed.
Claims (8)
- A door (28) for covering an inspection opening in a tubular mast (26); said door (28) being connectable to said mast (26) by a disconnectable hinge means (12, 14, 16); said disconnectable hinge means comprising a retaining means (14) and a hinge pin (16) that is slidable transversely with respect to its length in said retaining means (14); another part (12) of said disconnectable hinge means being connected to, and pivotable with, said hinge pin (16) relative to said retaining means (14); and wherein said retaining means (14) comprises a hook-shaped piece and said hinge pin (16) is slidable out of retention by said retaining means.
- A door (28) according to claim 1, wherein said other part (12) is a connecting piece (12) which is joined by a further hinge means (18) to a fixing piece (10).
- A door (28) according to claim 2, wherein said connecting piece (12) is substantially U-shaped, and said hinge pin (16) and said further hinge means (18) are each at a different tip of said U-shaped piece (12).
- A door (28) according to claim 2 or 3, wherein said fixing piece (10) is attached to said door and said retaining means (14) is attached to said mast (26).
- A door (28) according to any one of the preceding claims, wherein said disconnectable hinge means (12, 14, 16) further comprises an abutment screw (24) having a first position in which said door (28) cannot be removed from said mast (26) and a second position in which said door (28) can be removed and reattached to said mast (26); said door (28) being openable and closeable with said abutment screw (24) in both said first and second positions.
- A door (28) according to claims 2 and 5, wherein said abutment screw (24) is provided on said connecting piece (12).
- A door (28) according to claim 5 or 6, wherein when said hinge pin (16) is slid so as to attempt to disengage it from retention by said retaining means (14), said abutment screw (24) in said first position abuts a lip of said opening in said mast (26), thereby preventing removal of said door (28).
- A combination of: a tubular mast (26) having an inspection opening; and a door (28) according to any one of the preceding claims in said inspection opening.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19960304683 EP0751271B1 (en) | 1995-06-26 | 1996-06-25 | Tubular mast door |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95304482 | 1995-06-26 | ||
EP95304482 | 1995-06-26 | ||
EP19960304683 EP0751271B1 (en) | 1995-06-26 | 1996-06-25 | Tubular mast door |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0751271A1 EP0751271A1 (en) | 1997-01-02 |
EP0751271B1 true EP0751271B1 (en) | 2000-08-30 |
Family
ID=26140231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19960304683 Expired - Lifetime EP0751271B1 (en) | 1995-06-26 | 1996-06-25 | Tubular mast door |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0751271B1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0855484B1 (en) * | 1997-01-22 | 2003-06-25 | Hunter Douglas Industries B.V. | Elongate hollow tubular mast |
GB0111515D0 (en) * | 2001-05-11 | 2001-07-04 | Pudsey Diamond Engineering Ltd | Doors for closing apertures formed in the walls of tubular columns |
EP1681408A3 (en) | 2005-01-17 | 2006-12-06 | Zaklad Produkcji Sprzetu Oswietleniowego "ROSA"-Stanislaw ROSA | Closure of cavity of lamp post |
GB2475712A (en) * | 2009-11-27 | 2011-06-01 | Regent Engineering Co | Hinged access door allowing offset opening |
FR2954967B1 (en) * | 2010-01-06 | 2012-04-20 | Conimast Internat | INVISIBLE CANDELABRE VISIT DOOR OPENING MECHANISM |
JP6441210B2 (en) * | 2015-12-29 | 2018-12-19 | 株式会社三栄電機工業 | Steel pipe with side lid fall prevention structure |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3266859A (en) * | 1964-12-07 | 1966-08-16 | Collins Radio Co | One-piece plastic semi-articulated self-spring hinge |
GB1027943A (en) * | 1964-12-31 | 1966-05-04 | Cohen Brothers Electrical Ltd | Improvements in or relating to electric lighting columns |
US4854010A (en) * | 1987-11-20 | 1989-08-08 | The Boeing Company | Hinge mechanism for aircraft door |
DE4318607C2 (en) * | 1993-06-04 | 1995-07-13 | Grass Ag | Wide-angle hinge with an opening angle of approx. 180 ° |
NL9301343A (en) * | 1993-07-30 | 1995-02-16 | Hubertus Gerardus Jacobus Verh | Method for lowering and storing a flag, and flagpole to be used in this method |
-
1996
- 1996-06-25 EP EP19960304683 patent/EP0751271B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0751271A1 (en) | 1997-01-02 |
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