CA1124099A - Collar form - Google Patents
Collar formInfo
- Publication number
- CA1124099A CA1124099A CA390,575A CA390575A CA1124099A CA 1124099 A CA1124099 A CA 1124099A CA 390575 A CA390575 A CA 390575A CA 1124099 A CA1124099 A CA 1124099A
- Authority
- CA
- Canada
- Prior art keywords
- elements
- pipe
- collar form
- collar
- slab
- 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
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0288—Repairing or restoring floor slabs
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The subject invention is an improved collar form for retaining, during hardening, a cement-like material within the annular region between a pipe and a cement floor through which the pipe vertically extends. The collar form is comprised of two elements which are quickly fastened together to form a planar configuration which extends to cover one end of the annular region and presents a sealing contact with both the floor and the pipe.
The subject invention is an improved collar form for retaining, during hardening, a cement-like material within the annular region between a pipe and a cement floor through which the pipe vertically extends. The collar form is comprised of two elements which are quickly fastened together to form a planar configuration which extends to cover one end of the annular region and presents a sealing contact with both the floor and the pipe.
Description
~.2~
This invention relates to an improved collar form for retaining, during hardening, a cement-like material within the annular region between a pipe and a cement floor through which the pipe vertically extends.
Multi-storey buildings are constructed on a floor-by-floor basis whereby structural steel for a storey is erected and concrete is poured around that structural steel prior to placing the structural steel for the next storey.
Placement of plumbing, heating, electrical, and communication networks as well as wall, ceiling, and floor ~inishing also proceeds storey-by-storey. As the concrete or each successive floor of the building is poured, a number of strategically-placed openings are created in each floor, each opening providing a passage for one or more of the networks to pass through the floor. Electrical and communication wiring which passes from floor-to-floor is usually retained within pipe conduits, each of which extends through a series of ~ertically-aligned floor openings. The plumbing system pipes extend through a similar ~0 system of floor openings. This invention is directed toward the passage of such pipes through floor openings with cross-sectional area slightly larger than that of such pipes. Heating conduits, which are generally of larger cross-sectional area and utilize floor openings of larger cross-sectional area, are beyond the scope of this invention.
The vertical openings created in poured concrete floors for the passage o pipes are usually of circular cross section and sized to adequately allow passage of the anticipated ,. ~
... .. , . . . :
.
- , . ..
. . . - ,.
.
, ~ ' ' .2~
size of pipe that is to extend therethrough. As might be expected, the cross-sectional area of openings in the lower storeys of a multi-storey building is generally larger ~han ~hat required in the upper storeys since pipe capacity increases towards the base of the building.
After pipe has been placed through the vertical opening in a floor, the pipe is often secured to the building at points above and below the floor and a cement-like material placed into the annular region between the floor and the pipe. Although the poured cement floor is usually not visible after finishing of the floors and ceilings of a building, it is necessary that the annular regions be filled since they would otherwise provide access between store~s for water spillage, insects and fumes. Additionally, the federal Building Code requires that floors in new buildings be constructed to withstand passage of fire for at least 1 hour, which is not possible unless the annular region is adequately filled with a non-combustible material.
The obvious difficulty with placement of grout, concrete or other non-combustible hardenable material into the annular region between the floor and the pipe extending therethrough is the retention of the material until ~uch time as it has hardened sufficiently to be non-viscous. The present means for retaining such material in such annular region involves the stuffing of a rag, insulation or similar scrap material into the annular region sufficiently firmly that it will not be dislodged by the pouring of hardenable material into the annular region above and below it.
Obvious difficulties exist with this means for retaining the hardenable material. It is time-consuming to place the scrap material into the annular region. It is a messy procedure.
~he hardenable material must be placed into the annular ,. . . ~ . , , ~ , . . .
. . . .
.
- :
?
. - ' : . '. ;
, ~ 2~
region below the scrap material by a person and equipment located under the floor slab and this results in a mess to the person and equipment and also to the floor below.
Because the scrap material is permanently retained between the layers of hardenable material, the seal formed between the ~loor slab and the pipe extending therethrough is not as solid or as fire-resistant as would be the case if hardenable material completely occupied the annular region.
An improved means of retaining the hardenable material in the annular region during its hardening is disclosed in U.S. Patent No. 2,671,261 wherein a multi-sectioned fan-like collar is described. A strip of rubber or similar flexible material has a series of angle plates fastened to project from one of its sides such that when the flexible material is drawn tightly around the pipe at the lower end of the annular region the angle plates fan out in the plane of the underside of the floor to seal the lower end of the annular region. Fasteners are provided to hold the outer edge of the angle plates in abutment with the underside of the floor so as to provide additional support for hardena~le material retained in the annular region. This type of collar has a number of drawbacks.
The means for fastening the angle plates to the flexible material may become loose or a tear develop in the flexible material. Fasteners are secured to the underside of the floor and that procedure, as well as subsequent removal of such fasteners, is time-consuming.
The instant invention is a collar form of simple yet strong construction which does not have the disadvantages attendant either with stuffing a rag into the annular region or fasteniny a cumbersome device such as that disclosed in ... . .. . .
U.S. Patent No. 2,671,261 to 'che lower end of the annular region.
The subject invention is a collar form comprising two elements each of which has one of its edges proximate of the other element, the proximate edges including mating surfaces adapted to come into abutting contact with one another and also including contoured portions which together define an aperture between the members when they are fastened together. The aperture is sized such that the members come into close sealing proximity with the pipe along the contoured portions of the proximate edge and with each other along the mating surfaces when the members are fastened together. The collar form may further comprise a non-porous sheet having a centred aperture therein adapted to snugly receive apipe; which sheet is adapted to be fitted between the surface of the element and the surface of the alab to form a seal therebetween when the collar form is in use. The elements may be releasably fastened together by means of threaded rods each of which extend through aligned bores in the elements and have a retaining means on each end.
To save on weight yet maintain strenyth, the collar form elements may be generally planar and have a pair of integral ribs protruding from them on that side opposite to the side adapted to face the surface of the slab. Each rib of one element is aligned longitudinally with a rib in the other element, the ribs extending generally perpendicular to the proximate edges of the elements. The elements are releasably fastened together by means of a pair o~ threaded rods each o which rods is adapted to extend through a longitudinal bore in an aligned pair of ribs and to have a retaining means on each of its ends.
':
." , ~
For more accurately aligning the two elements, the collar fonn may further comprise pin and hole means on the proximate edges of the elements.
A preferred embodiment of the invention will next be described utilizing the accompanying figures, in which:
Figure 1 is a perspective view of the collar form of the subject invention.
Figure 2 is a perspective view of one of the elements of the collar form of the subject invention.
Figure 3 is a cross-sectional view of a pipe extending through a vertical channel in a floor.
Figure 4 is a cross-sectional view as in Figure 3 and additionally showing the collar fo~n of the subject invention loosely fitted to the pipe.
Figure 5 is a cross-sectional view as in Figure 4 but showing placement oE the collar form of the subject invention against the underside of the floor.
Figure 6 is a cross-sectional view as in Figure 5 and additionally showing cement-like material occupying the annular region between the pipe and the floor.
Figure 7 is a cross-sectional view as in Figure 6 but with the collar form of the subject invention removed.
The illustrated preferred embodiment of the invention comprises a collar form 11 fo~ned from two elements, 12 and 13, as shown in Figure 1. The elements each have a planar portion 14 and ribs 15 which extend at opposite ends of the planar portion from the same side of the planar portion. The pair o ribs 15 of element 12 align longitudinally with a similar pair of ribs in element 13. A threaded rod 16 extends through , . . .
, ;
a longitudinal bore in each of the longitudinally-aligned ribs.
A winged nut 17 is retained on each end of each threaded rod 16.
As shown in Figure 2, the proximate edges of elements 12 and 13 have mating sur~aces 20 and a ~ontoured surface 21 therebetween.
Since the collar form illustrated is adapted to be fitted to a pipe of circular cross section, contoured surface 21 has a semi-circular shape. When elements 12 and 13 are fastened together, the contoured surfaces of both elements ~ogether form a circular cylinder with diameter the same as that of th~
pipe extending therethrough. A portion of the circular cylinder is formed by a frusto conical-shaped lip 22 integral with the planar portions of the ele~ents and extending from the same side of the planar portions as that from which the ribs Pxtend.
Each o~ a pair of pins 23 extends from a respective one of the mating surfaces 20 of element 13, as shown in Figure 2. Pins 23 are circular in cross section and adapted to fit into bores of similar diameter (not shown) in the mating surfaces of element 12 so as to more accurately align the two elements and define the shape of the aperture.
Figures 3 to 7 illustrate in sequential steps the application of the preferred embodiment of the collar form of the subject invention to a pipe 30 vertically extending through an opening 31 in a floor slab 32. Floor slab 32 is formed from poured concrete, as previously describ~d. The pipe is held by a retaining means (not shown) at points above and below the slab such that the annular region formed between the pipe and the surrounding floor slab has a rigidly de~ined config-uration. The pipe 30 has a standard size outside diameter and : .
" , .
might be manufactured from steel or plastic, the latter being used as a conduit for electrical and communication wiring and also more commonly nowadays for plumbing. The initial step in placing the preferred embodiment of the collar form of the subject invention around pipe 30 involves choosing a collar form having adiameter onits contour surface equal to the outer diameter of the standard size pipe 30. Various size collar forms would be available, each snugly fittable to one of the standard sizes of pipe. After the correct size of collar form is select~d, winged nuts 17 are removed from threaded rod 16 on the collar form and the two elements of the form are separated.
After one of the elements has been placed around pipe 30, the other element is refitted over threaded rods 16 and then winged nuts 17 are loosely fastened onto threaded rods 16. The collar form 11 is now slidable along pipe 30.
In Figure 4 a polyethylene sheet 33 rests on top of collar form 11. Sheet 33 has a centred aperture from which a radial cut extends to its periphery, that periphery being slightly larger in size than the periphery of the collar form.
If the lower end of pipe 30 is not rigidly retained prior to placement therearound of sheet 33 and collar form 11, it would be possible to place sheet 33 and collar form 11 over that lower end and slide them up pipe 30, and in such case neither the radial cut in sheet 30 nor the senaration and subsequen~
reattachment of the two elements of collar form 11 would be necessary.
With collar form 11 loosely fitting around pipe 30 and sheet 33 resting on top of the form, the ~orm is ~ ` ~
slid upwards along pipe 30 until the top surface of sheet 33 is adjacent to the undersurface of slab 32. Winged nuts 17 are manually tightened as a firm upward force is applied to collar form 11 to ensure that the seal between sheet 33 and slab 32 is as tight as is possible. With tightening of winged nuts 17 collar form 11 tightly grips the pipe 30 since the diameter of contour surface 21 is closely matched to the outer diameter of pipe 30. Figure 5 illustrates the position of collar form 11 after tightening of winged nuts 17.
Grout or concrete or other hardenable cement-like material is then inserted from above into annular region 31 until the top surface of that material is even with the upper surface of the slab; this configuration, with the cement-like material 34 in situ, is illustrated in Figure 6. After the cement-like material has sufficiently hardened that it is no longer viscous, winged nuts 17 can be loosened and collar form 11 removed from the pipe, Figure 7 illustrating the resultant configuration.
.. .
It would also be possible to apply the collar form to a pipe extending horizontally through a wall of a building. Such utilization of the collar form would however require two forms, one for each side of the wall.
~lso, one of the collar forms would have to have incorporated therein a suitable means for allowing insertion of the hardenable material into the annular region between the pipe and the wall.
.. ~
,
This invention relates to an improved collar form for retaining, during hardening, a cement-like material within the annular region between a pipe and a cement floor through which the pipe vertically extends.
Multi-storey buildings are constructed on a floor-by-floor basis whereby structural steel for a storey is erected and concrete is poured around that structural steel prior to placing the structural steel for the next storey.
Placement of plumbing, heating, electrical, and communication networks as well as wall, ceiling, and floor ~inishing also proceeds storey-by-storey. As the concrete or each successive floor of the building is poured, a number of strategically-placed openings are created in each floor, each opening providing a passage for one or more of the networks to pass through the floor. Electrical and communication wiring which passes from floor-to-floor is usually retained within pipe conduits, each of which extends through a series of ~ertically-aligned floor openings. The plumbing system pipes extend through a similar ~0 system of floor openings. This invention is directed toward the passage of such pipes through floor openings with cross-sectional area slightly larger than that of such pipes. Heating conduits, which are generally of larger cross-sectional area and utilize floor openings of larger cross-sectional area, are beyond the scope of this invention.
The vertical openings created in poured concrete floors for the passage o pipes are usually of circular cross section and sized to adequately allow passage of the anticipated ,. ~
... .. , . . . :
.
- , . ..
. . . - ,.
.
, ~ ' ' .2~
size of pipe that is to extend therethrough. As might be expected, the cross-sectional area of openings in the lower storeys of a multi-storey building is generally larger ~han ~hat required in the upper storeys since pipe capacity increases towards the base of the building.
After pipe has been placed through the vertical opening in a floor, the pipe is often secured to the building at points above and below the floor and a cement-like material placed into the annular region between the floor and the pipe. Although the poured cement floor is usually not visible after finishing of the floors and ceilings of a building, it is necessary that the annular regions be filled since they would otherwise provide access between store~s for water spillage, insects and fumes. Additionally, the federal Building Code requires that floors in new buildings be constructed to withstand passage of fire for at least 1 hour, which is not possible unless the annular region is adequately filled with a non-combustible material.
The obvious difficulty with placement of grout, concrete or other non-combustible hardenable material into the annular region between the floor and the pipe extending therethrough is the retention of the material until ~uch time as it has hardened sufficiently to be non-viscous. The present means for retaining such material in such annular region involves the stuffing of a rag, insulation or similar scrap material into the annular region sufficiently firmly that it will not be dislodged by the pouring of hardenable material into the annular region above and below it.
Obvious difficulties exist with this means for retaining the hardenable material. It is time-consuming to place the scrap material into the annular region. It is a messy procedure.
~he hardenable material must be placed into the annular ,. . . ~ . , , ~ , . . .
. . . .
.
- :
?
. - ' : . '. ;
, ~ 2~
region below the scrap material by a person and equipment located under the floor slab and this results in a mess to the person and equipment and also to the floor below.
Because the scrap material is permanently retained between the layers of hardenable material, the seal formed between the ~loor slab and the pipe extending therethrough is not as solid or as fire-resistant as would be the case if hardenable material completely occupied the annular region.
An improved means of retaining the hardenable material in the annular region during its hardening is disclosed in U.S. Patent No. 2,671,261 wherein a multi-sectioned fan-like collar is described. A strip of rubber or similar flexible material has a series of angle plates fastened to project from one of its sides such that when the flexible material is drawn tightly around the pipe at the lower end of the annular region the angle plates fan out in the plane of the underside of the floor to seal the lower end of the annular region. Fasteners are provided to hold the outer edge of the angle plates in abutment with the underside of the floor so as to provide additional support for hardena~le material retained in the annular region. This type of collar has a number of drawbacks.
The means for fastening the angle plates to the flexible material may become loose or a tear develop in the flexible material. Fasteners are secured to the underside of the floor and that procedure, as well as subsequent removal of such fasteners, is time-consuming.
The instant invention is a collar form of simple yet strong construction which does not have the disadvantages attendant either with stuffing a rag into the annular region or fasteniny a cumbersome device such as that disclosed in ... . .. . .
U.S. Patent No. 2,671,261 to 'che lower end of the annular region.
The subject invention is a collar form comprising two elements each of which has one of its edges proximate of the other element, the proximate edges including mating surfaces adapted to come into abutting contact with one another and also including contoured portions which together define an aperture between the members when they are fastened together. The aperture is sized such that the members come into close sealing proximity with the pipe along the contoured portions of the proximate edge and with each other along the mating surfaces when the members are fastened together. The collar form may further comprise a non-porous sheet having a centred aperture therein adapted to snugly receive apipe; which sheet is adapted to be fitted between the surface of the element and the surface of the alab to form a seal therebetween when the collar form is in use. The elements may be releasably fastened together by means of threaded rods each of which extend through aligned bores in the elements and have a retaining means on each end.
To save on weight yet maintain strenyth, the collar form elements may be generally planar and have a pair of integral ribs protruding from them on that side opposite to the side adapted to face the surface of the slab. Each rib of one element is aligned longitudinally with a rib in the other element, the ribs extending generally perpendicular to the proximate edges of the elements. The elements are releasably fastened together by means of a pair o~ threaded rods each o which rods is adapted to extend through a longitudinal bore in an aligned pair of ribs and to have a retaining means on each of its ends.
':
." , ~
For more accurately aligning the two elements, the collar fonn may further comprise pin and hole means on the proximate edges of the elements.
A preferred embodiment of the invention will next be described utilizing the accompanying figures, in which:
Figure 1 is a perspective view of the collar form of the subject invention.
Figure 2 is a perspective view of one of the elements of the collar form of the subject invention.
Figure 3 is a cross-sectional view of a pipe extending through a vertical channel in a floor.
Figure 4 is a cross-sectional view as in Figure 3 and additionally showing the collar fo~n of the subject invention loosely fitted to the pipe.
Figure 5 is a cross-sectional view as in Figure 4 but showing placement oE the collar form of the subject invention against the underside of the floor.
Figure 6 is a cross-sectional view as in Figure 5 and additionally showing cement-like material occupying the annular region between the pipe and the floor.
Figure 7 is a cross-sectional view as in Figure 6 but with the collar form of the subject invention removed.
The illustrated preferred embodiment of the invention comprises a collar form 11 fo~ned from two elements, 12 and 13, as shown in Figure 1. The elements each have a planar portion 14 and ribs 15 which extend at opposite ends of the planar portion from the same side of the planar portion. The pair o ribs 15 of element 12 align longitudinally with a similar pair of ribs in element 13. A threaded rod 16 extends through , . . .
, ;
a longitudinal bore in each of the longitudinally-aligned ribs.
A winged nut 17 is retained on each end of each threaded rod 16.
As shown in Figure 2, the proximate edges of elements 12 and 13 have mating sur~aces 20 and a ~ontoured surface 21 therebetween.
Since the collar form illustrated is adapted to be fitted to a pipe of circular cross section, contoured surface 21 has a semi-circular shape. When elements 12 and 13 are fastened together, the contoured surfaces of both elements ~ogether form a circular cylinder with diameter the same as that of th~
pipe extending therethrough. A portion of the circular cylinder is formed by a frusto conical-shaped lip 22 integral with the planar portions of the ele~ents and extending from the same side of the planar portions as that from which the ribs Pxtend.
Each o~ a pair of pins 23 extends from a respective one of the mating surfaces 20 of element 13, as shown in Figure 2. Pins 23 are circular in cross section and adapted to fit into bores of similar diameter (not shown) in the mating surfaces of element 12 so as to more accurately align the two elements and define the shape of the aperture.
Figures 3 to 7 illustrate in sequential steps the application of the preferred embodiment of the collar form of the subject invention to a pipe 30 vertically extending through an opening 31 in a floor slab 32. Floor slab 32 is formed from poured concrete, as previously describ~d. The pipe is held by a retaining means (not shown) at points above and below the slab such that the annular region formed between the pipe and the surrounding floor slab has a rigidly de~ined config-uration. The pipe 30 has a standard size outside diameter and : .
" , .
might be manufactured from steel or plastic, the latter being used as a conduit for electrical and communication wiring and also more commonly nowadays for plumbing. The initial step in placing the preferred embodiment of the collar form of the subject invention around pipe 30 involves choosing a collar form having adiameter onits contour surface equal to the outer diameter of the standard size pipe 30. Various size collar forms would be available, each snugly fittable to one of the standard sizes of pipe. After the correct size of collar form is select~d, winged nuts 17 are removed from threaded rod 16 on the collar form and the two elements of the form are separated.
After one of the elements has been placed around pipe 30, the other element is refitted over threaded rods 16 and then winged nuts 17 are loosely fastened onto threaded rods 16. The collar form 11 is now slidable along pipe 30.
In Figure 4 a polyethylene sheet 33 rests on top of collar form 11. Sheet 33 has a centred aperture from which a radial cut extends to its periphery, that periphery being slightly larger in size than the periphery of the collar form.
If the lower end of pipe 30 is not rigidly retained prior to placement therearound of sheet 33 and collar form 11, it would be possible to place sheet 33 and collar form 11 over that lower end and slide them up pipe 30, and in such case neither the radial cut in sheet 30 nor the senaration and subsequen~
reattachment of the two elements of collar form 11 would be necessary.
With collar form 11 loosely fitting around pipe 30 and sheet 33 resting on top of the form, the ~orm is ~ ` ~
slid upwards along pipe 30 until the top surface of sheet 33 is adjacent to the undersurface of slab 32. Winged nuts 17 are manually tightened as a firm upward force is applied to collar form 11 to ensure that the seal between sheet 33 and slab 32 is as tight as is possible. With tightening of winged nuts 17 collar form 11 tightly grips the pipe 30 since the diameter of contour surface 21 is closely matched to the outer diameter of pipe 30. Figure 5 illustrates the position of collar form 11 after tightening of winged nuts 17.
Grout or concrete or other hardenable cement-like material is then inserted from above into annular region 31 until the top surface of that material is even with the upper surface of the slab; this configuration, with the cement-like material 34 in situ, is illustrated in Figure 6. After the cement-like material has sufficiently hardened that it is no longer viscous, winged nuts 17 can be loosened and collar form 11 removed from the pipe, Figure 7 illustrating the resultant configuration.
.. .
It would also be possible to apply the collar form to a pipe extending horizontally through a wall of a building. Such utilization of the collar form would however require two forms, one for each side of the wall.
~lso, one of the collar forms would have to have incorporated therein a suitable means for allowing insertion of the hardenable material into the annular region between the pipe and the wall.
.. ~
,
Claims (5)
1. A collar form, adapted to be fitted to a pipe extending through an aperture in a cement slab, for retaining cement material in an annular region between the pipe and the slab during hardening of that material, the form comprising two elements having proximate edges, the proximate edges including mating surfaces adapted to come into abutting contact with one another and said proximate edges further including contoured portions together defining an aperture between the members when they are fastened together, the aperture being sized such that the members come into close sealing proximity with the pipe along said contoured portions of the proximate edges and with each other along the mating surfaces when fastened together.
2. A collar form as in claim 1, and further comprising a non-porous sheet having a centred aperture therein adapted to snugly receive a pipe, such sheet being adapted to be fitted between said surface of the elements and the surface of the slab when in use, whereby to form a seal therebetween.
3. A collar form as in claim 1 or 2, and further comprising a pair of threaded rods for releasably fastening the elements together, each rod being adapted to extend through an aligned bore in the elements and each rod having a retaining means on each of its ends.
4. A collar form as in claim 1 and 2, wherein the elements are generally planar and have a pair of integral ribs protruding from them on that side opposite to the side adapted to face the surface of the slab, whereby, when the elements are fastened together in use, each rib of the one element aligns longitudinally with a rib in the other element, the ribs extending generally perpendicular to the proximate edges of the elements, and wherein the elements are releasably fastened together by means of a pair of threaded rods, each rod being adapted to extend through a longitudinal bore in an aligned pair of ribs, each rod having a retaining means on each of its ends.
5. A collar form as in claim 1 or 2, and further comprising pin and hole means on the proximate edges of the elements for improving alignment between the members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA390,575A CA1124099A (en) | 1981-11-20 | 1981-11-20 | Collar form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA390,575A CA1124099A (en) | 1981-11-20 | 1981-11-20 | Collar form |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1124099A true CA1124099A (en) | 1982-05-25 |
Family
ID=4121466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA390,575A Expired CA1124099A (en) | 1981-11-20 | 1981-11-20 | Collar form |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1124099A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4704840A (en) * | 1986-02-21 | 1987-11-10 | Gatto Paul J | Mold and method of use |
| WO2012005598A1 (en) * | 2010-07-08 | 2012-01-12 | Inge Johnsen | Casting frame for sealing a conduit in a deck and use of same |
-
1981
- 1981-11-20 CA CA390,575A patent/CA1124099A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4704840A (en) * | 1986-02-21 | 1987-11-10 | Gatto Paul J | Mold and method of use |
| WO2012005598A1 (en) * | 2010-07-08 | 2012-01-12 | Inge Johnsen | Casting frame for sealing a conduit in a deck and use of same |
| EP2591184A1 (en) * | 2010-07-08 | 2013-05-15 | Inge Johnsen | Casting frame for sealing a conduit in a deck and use of same |
| EP2591184A4 (en) * | 2010-07-08 | 2014-06-11 | Inge Johnsen | Casting frame for sealing a conduit in a deck and use of same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |