CA1147599A - Bracket and door track assembly - Google Patents
Bracket and door track assemblyInfo
- Publication number
- CA1147599A CA1147599A CA000389574A CA389574A CA1147599A CA 1147599 A CA1147599 A CA 1147599A CA 000389574 A CA000389574 A CA 000389574A CA 389574 A CA389574 A CA 389574A CA 1147599 A CA1147599 A CA 1147599A
- Authority
- CA
- Canada
- Prior art keywords
- track
- portions
- bracket
- members
- pair
- 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
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Abstract
BRACKET AND DOOR TRACK ASSEMBLY
ABSTRACT
This bracket and track assembly can be used for slid-ing door assemblies and facilitates the alignment and instal-lation of such doors. The track includes a pair of spaced, inwardly facing channel-shaped track members, supported by a plurality of longitudinally spaced, U-shaped bracket members embracingly disposed about said track members. The upper por-tion of each bracket member includes a rotatably mounted locking clip and a pair of arcuate slots receiving opposed legs of the clip. The arcuate slots overlap the upper, inner edges of each track member so that the clip legs exert an out-ward force against the track members when the clip is rotated, tending to urge said track members into engagement with said bracket members.
ABSTRACT
This bracket and track assembly can be used for slid-ing door assemblies and facilitates the alignment and instal-lation of such doors. The track includes a pair of spaced, inwardly facing channel-shaped track members, supported by a plurality of longitudinally spaced, U-shaped bracket members embracingly disposed about said track members. The upper por-tion of each bracket member includes a rotatably mounted locking clip and a pair of arcuate slots receiving opposed legs of the clip. The arcuate slots overlap the upper, inner edges of each track member so that the clip legs exert an out-ward force against the track members when the clip is rotated, tending to urge said track members into engagement with said bracket members.
Description
This invention relates generally to a bracket and track assembly and particularly to an assembly which can be installed without conventional fasteners and, in one aspect, is used for sliding door assemblies.
Tracks which are used for sliding doors and the like must be mounted or suspended above the doors. Because of this there are considerable problems in aligning the tracks not only laterally b~t also longitudinally. It will be readily understood that there is a considerable disadvantage making lengthwise adjustments which are dependent on the alignment of bo~t openings. In addition, conventional fasteners are easily mislaid and can be loosened by vibration under the operational conditions of some sliding doors.
The present bracket and track assembly overcomes these and other problems in a manner not disclosed by the known prior art.
This bracket and track assembly provides a means for aligning and attaching a track to a bracket without the use of conventional fasteners. It is particularly useful for the installation of tracks used ~or sliding door assemblies.
The bracket and track assembly includes at least one track member having an upper portion providing a longitudinal engagement means; a lower portion, and a web portion connect-ing said upper and lower portions. The assembly also includes a bracket member disposed in embracing relation about said track member and including an upper portion extending beyond said track upper portion engagement means; a lower portion supporting said track member lower portion and at least one 29 web portion interconnecting said upper and lower portions.
^', 1~759g The bracket member is provided with locking means rotatably mounted to said bracket upper portion and including an engage-ment portion rotatable into engagement with said track upper portion engagement means tending to urge said track member into engagement with said bracket member.
In one aspect of the invention, the track member web portion is spaced from the bracket member web portion and at least o~e pad is disposed ~etween said web portions, inter-mediate said upper and lower portions, tending to move said track lower portion in one direction, into engagement with said bracket lower portion, when said track upper portion is moved in the other direction.
In another aspect of the invention, the bracket upper portions includes a slot overlappingly related to the track longitudinal engagement means and the locking means includes a rotatable camming member having a radial arm portion and a depending leg portion extending through said slot and provid-ing said engagement portion.
According to an important aspect of the invention, the track includes a pair of generally channel-shaped, in-wardly facing track members the lower portions having longi-tudinal engagement means disposed in spaced side-by-side re-lation, and the bracket member is U-shaped having an upper portion extending over the upper portions of both track mem-bers, a pivot axis being disposed between said track upper portion long~tudinal engagement means; said bracket member also including a pair of inwardly turned lower portions each having a.stop means disposed adjacent one of said track lower 29 engagement means, and sai~ bracket member also including a 7S9~
pair of web portions connecting said lower portions to said uppex portions. Locking means is provided including a pair of engagement portions disposed on opposite sides of said pivot axis~ each engagement portion being rotatable into en-gagement with one of said track upper portion engagement means.
According to another aspect of the invention, the bracket member upper portion includes opposed arcuate slots overlappingly related ~o said track upper longitudinal engage-ment means, and said locking means includes a camming member having depending legs received by said slots and providing said engagement portions.
According to another aspect of the invention, the camming member is generally U-shaped and includes a bight portion connecting said depending legs, the bight portion in-cluding means for turning said camming member.
According to yet another aspect of the invention, said track member web portions are inwardly spaced from said brack-et web portions, and at least one pad is disposed between said spaced web portions tending to urge said track lower portions in one direction when said track upper portions are urged in the opposite direction.
In yet another aspect of the invention, the pads be-tween the track member and bracket member are of resilient material.
In still another aspect of the invention, each of said bracket lower portions includes upturned portions pro-viding said bracket stop means, and each of said track lower portions includes an upturned portion providing said track 29 longitudinal engagement means.
~' ~
Sg9 In another aspect of the invention, each of said track web portions includes an inwardly inclined lower portion fa-cilitating installation of said track.
FIG. 1 is a front elevational view of a sliding door system using the bracket and track assembly;
- FIG. 2 is an enlarged cross sectional view taken through line 2-2 of FIG. l;
¦ FIG. 3 is an enlarged cross sectional view of the bracket and track assembly;
FIG. 4 is a plan view thereof; and FIG. 5 is a side elevational view thereof.
Referring now by reference numerals to the drawings and first to FIGS. 1 and 2, it will be understood that the bracket and track assembly is generally indicated by numeral 10 and, in the preferred embodiment, is used in conjunction with a sliding door system 12.
As shown in FIG. 1, the sliding door system 12 is provided for an opening 14, which is framed by side and upper casing members 16 and 18, the door consisting of a pair of oppositely sliding door panels 20 suspended from a track 22.
As shown in FIG. 2, each sliding panel 20 is provided with a roller assembly 24 carried by the track 22. The track 22 is supported by a plurality of bracket members 26 suspended from i overhead brackets 28, which are attached to a header 30, carried by the wall 32. The bracket and track assembly 10 will now be described with greater particularity, with refe-rence to FIGS. 3 through 5.
As clearly shown in FIG. 3, the track 22 consists es-29 sentially of a pair of oppositely formed track members 34 and 1~7599 35. Each track meniber includes an inwardly turned transverse upper portion 36 having a longitudinal margin portion 38, and an inwardly turned transverse lower portion 40 having an up-turned, inclined end 42 terminating in a longitudinal margin.
portion 44, said margin portions constituting engagement means.
The upper and lower portions are interconnected by a web por-tion 46 having an inclined portion 5iS.
~e bracket men~3ers 26 are generally U-shaped and each is embracingly disposed about said track members 34 and 35. Each bracket meniber 26 includes a transverse upper por-tion 48, a pair of transverse, oppositely disposed, inwardly turned lower portions 50, having upwardly turned end portions 52 disposed in side-by-side relation, sa id end portions con-stituting stop means adjacent to and engageable with said longitudinal margin portions 44 of the track lower portions 40. The upper and lower portions 46 and 52 are interconnected by web portions 54, said lower portions supporting said track menibers.
As shown in FIG. 4, the upper portion 46 of each bracket me~er 24 includes a pair of arcuate slots 56 and 58.
In the preferred elbbodiment, slots 56 and 58 are disposed on opposite sides of the longitudinal axis of the track centered between said track members 34 and 35, and have their longest portion disposed on each side of the transverse axis inter-secting the center of the circle defining said slots 56 and 58. In the embodiment shown in FIG. 4, each arcuate slot extends from substantially the longitudinal axis to a point about fifteen degrees (15t~ ) beyond the transverse axis. The 29 width of the slots, as clearly shown in FIG. 4, overlaps the ~ 7599 longitudinal margin portions 38 of the track member upper portions. Importantly, a locking means, provided by a cam-ming member in the form of a generally U-shaped clip 60, is rotatably mounted to the transverse upper portion 46 by means of a rivet 62. As clearl~ shown in FIG. 3, the clip 60 in-cludes a bight portion 64 having upturned ends 65, and a pair of downwardly depending legs 66 which project through the opposed arcuate slots 56 and 58. The legs 66 provide engage-ment means and are engageable with the track margin portions 38 upon rotation of said clip 60 into a position generally perpendicular to the longitudinal axis of the track 22 said clip being turned by means of said upturned ends 6S.
The distance from the center of rotation of the clip 60, is the outer edges of the clip legs 66 providing the en-gagement portions, is greater than the perpendicular distance of the longitudinal margins 38 from the longitudinal axis of the track 22 when the clip is in the position shown in phan-tom outline by 60'. This structural arrangement of parts provides that when the clip 60 is moved into a perpendicular position the legs 66 tend to move each track upper portion 36 away from said longitudinal axis. This movement of the upper portions 36 is resisted by a pair of resilient bumper pads 68, which are disposed between the spaced web portions 46 and 54 of the track and bracket members respectively and ' attached to said bracket as by adhesive.
As will be understood from FIG. 3, the tendency of the track upper portions 36 to move away from the longitudinal axis of the track 22 results in a tendency for the track low-29 er portions 40 to move toward said longitudinal axis because 1~75~9 ~f the tendency of the track members 34 and 35 to pivot aboutthe bumper pads 68. This pivotal action results in a pressure engagement between the track lower longitudinal margin 44 agai~st the stop means provided by the upwardly turned por-tions 52 of the bracket member 26.
The installation of the bracket and track assembly 10 is believed to be fully understood fr~m the foreg~ing de-scription of parts but for completeness of disclosure will be briefly described with respect to a sliding door assembly 12.
The installation consists essentially of mounting a plurality of bracket members ~6 to associated wall brackets 28 by bolting said upstanding bracket mounting portions 70 to said wall bracket 28, said bracket members and wall brack-ets constituting a support means. With the bracket members 26 in place, and the clips 60 of each bracket rotated in a counterclockwise position, as shown in phantom outline by 60' in FIG. 4, it becomes a relatively simple matter to thread each of the track members 34 and 36 into place, with the webs 46 substantially horizontal if desired, and then rotate said members into the position shown in FIG. 3, such track me~bers being configurated to facilitate camming into place. once the track members 34 and 35 have been correctly aligned and longitudinally located, it is merely a matter of rotating the clips 60 in a clockwise direction so that the legs 66 en-gage the longitudinal margins 38. Continued rotation of the clip 60 urges the track upper portions 36 away from the long-itudinal axis until the clip is substantially perpendicular 29 to the longitudinal axis of the track and exerts a force 759~
against the upper margin portions 38. This results in a pivoting action of ~he track members 34 and 35 about the bumper pads 68 and produces movement of the lower track longitudinal margins 44 against the bracket member upturned ends 52 thereby clamping the track members 34 and 35 in place into a locked position. The relatively flat configuration of the outer face of the clip 60 results in maximum movement of the track upper portions 36 away from the longitudinal axis when the clip corners 72 are perpendicular to the longitudi-nal axis. Further movement of the clip 60, until the com-patible flat faces of the clip 60 are parallel with the mar-gins 38 results in a slight return of the track upper portions 36 and precludes any tendency for the clip to rotate out of position. As will be readily understood the length of the clip legs 66 provides said legs with some resilience which also facilitates the frictional clamping and locking action.
Tracks which are used for sliding doors and the like must be mounted or suspended above the doors. Because of this there are considerable problems in aligning the tracks not only laterally b~t also longitudinally. It will be readily understood that there is a considerable disadvantage making lengthwise adjustments which are dependent on the alignment of bo~t openings. In addition, conventional fasteners are easily mislaid and can be loosened by vibration under the operational conditions of some sliding doors.
The present bracket and track assembly overcomes these and other problems in a manner not disclosed by the known prior art.
This bracket and track assembly provides a means for aligning and attaching a track to a bracket without the use of conventional fasteners. It is particularly useful for the installation of tracks used ~or sliding door assemblies.
The bracket and track assembly includes at least one track member having an upper portion providing a longitudinal engagement means; a lower portion, and a web portion connect-ing said upper and lower portions. The assembly also includes a bracket member disposed in embracing relation about said track member and including an upper portion extending beyond said track upper portion engagement means; a lower portion supporting said track member lower portion and at least one 29 web portion interconnecting said upper and lower portions.
^', 1~759g The bracket member is provided with locking means rotatably mounted to said bracket upper portion and including an engage-ment portion rotatable into engagement with said track upper portion engagement means tending to urge said track member into engagement with said bracket member.
In one aspect of the invention, the track member web portion is spaced from the bracket member web portion and at least o~e pad is disposed ~etween said web portions, inter-mediate said upper and lower portions, tending to move said track lower portion in one direction, into engagement with said bracket lower portion, when said track upper portion is moved in the other direction.
In another aspect of the invention, the bracket upper portions includes a slot overlappingly related to the track longitudinal engagement means and the locking means includes a rotatable camming member having a radial arm portion and a depending leg portion extending through said slot and provid-ing said engagement portion.
According to an important aspect of the invention, the track includes a pair of generally channel-shaped, in-wardly facing track members the lower portions having longi-tudinal engagement means disposed in spaced side-by-side re-lation, and the bracket member is U-shaped having an upper portion extending over the upper portions of both track mem-bers, a pivot axis being disposed between said track upper portion long~tudinal engagement means; said bracket member also including a pair of inwardly turned lower portions each having a.stop means disposed adjacent one of said track lower 29 engagement means, and sai~ bracket member also including a 7S9~
pair of web portions connecting said lower portions to said uppex portions. Locking means is provided including a pair of engagement portions disposed on opposite sides of said pivot axis~ each engagement portion being rotatable into en-gagement with one of said track upper portion engagement means.
According to another aspect of the invention, the bracket member upper portion includes opposed arcuate slots overlappingly related ~o said track upper longitudinal engage-ment means, and said locking means includes a camming member having depending legs received by said slots and providing said engagement portions.
According to another aspect of the invention, the camming member is generally U-shaped and includes a bight portion connecting said depending legs, the bight portion in-cluding means for turning said camming member.
According to yet another aspect of the invention, said track member web portions are inwardly spaced from said brack-et web portions, and at least one pad is disposed between said spaced web portions tending to urge said track lower portions in one direction when said track upper portions are urged in the opposite direction.
In yet another aspect of the invention, the pads be-tween the track member and bracket member are of resilient material.
In still another aspect of the invention, each of said bracket lower portions includes upturned portions pro-viding said bracket stop means, and each of said track lower portions includes an upturned portion providing said track 29 longitudinal engagement means.
~' ~
Sg9 In another aspect of the invention, each of said track web portions includes an inwardly inclined lower portion fa-cilitating installation of said track.
FIG. 1 is a front elevational view of a sliding door system using the bracket and track assembly;
- FIG. 2 is an enlarged cross sectional view taken through line 2-2 of FIG. l;
¦ FIG. 3 is an enlarged cross sectional view of the bracket and track assembly;
FIG. 4 is a plan view thereof; and FIG. 5 is a side elevational view thereof.
Referring now by reference numerals to the drawings and first to FIGS. 1 and 2, it will be understood that the bracket and track assembly is generally indicated by numeral 10 and, in the preferred embodiment, is used in conjunction with a sliding door system 12.
As shown in FIG. 1, the sliding door system 12 is provided for an opening 14, which is framed by side and upper casing members 16 and 18, the door consisting of a pair of oppositely sliding door panels 20 suspended from a track 22.
As shown in FIG. 2, each sliding panel 20 is provided with a roller assembly 24 carried by the track 22. The track 22 is supported by a plurality of bracket members 26 suspended from i overhead brackets 28, which are attached to a header 30, carried by the wall 32. The bracket and track assembly 10 will now be described with greater particularity, with refe-rence to FIGS. 3 through 5.
As clearly shown in FIG. 3, the track 22 consists es-29 sentially of a pair of oppositely formed track members 34 and 1~7599 35. Each track meniber includes an inwardly turned transverse upper portion 36 having a longitudinal margin portion 38, and an inwardly turned transverse lower portion 40 having an up-turned, inclined end 42 terminating in a longitudinal margin.
portion 44, said margin portions constituting engagement means.
The upper and lower portions are interconnected by a web por-tion 46 having an inclined portion 5iS.
~e bracket men~3ers 26 are generally U-shaped and each is embracingly disposed about said track members 34 and 35. Each bracket meniber 26 includes a transverse upper por-tion 48, a pair of transverse, oppositely disposed, inwardly turned lower portions 50, having upwardly turned end portions 52 disposed in side-by-side relation, sa id end portions con-stituting stop means adjacent to and engageable with said longitudinal margin portions 44 of the track lower portions 40. The upper and lower portions 46 and 52 are interconnected by web portions 54, said lower portions supporting said track menibers.
As shown in FIG. 4, the upper portion 46 of each bracket me~er 24 includes a pair of arcuate slots 56 and 58.
In the preferred elbbodiment, slots 56 and 58 are disposed on opposite sides of the longitudinal axis of the track centered between said track members 34 and 35, and have their longest portion disposed on each side of the transverse axis inter-secting the center of the circle defining said slots 56 and 58. In the embodiment shown in FIG. 4, each arcuate slot extends from substantially the longitudinal axis to a point about fifteen degrees (15t~ ) beyond the transverse axis. The 29 width of the slots, as clearly shown in FIG. 4, overlaps the ~ 7599 longitudinal margin portions 38 of the track member upper portions. Importantly, a locking means, provided by a cam-ming member in the form of a generally U-shaped clip 60, is rotatably mounted to the transverse upper portion 46 by means of a rivet 62. As clearl~ shown in FIG. 3, the clip 60 in-cludes a bight portion 64 having upturned ends 65, and a pair of downwardly depending legs 66 which project through the opposed arcuate slots 56 and 58. The legs 66 provide engage-ment means and are engageable with the track margin portions 38 upon rotation of said clip 60 into a position generally perpendicular to the longitudinal axis of the track 22 said clip being turned by means of said upturned ends 6S.
The distance from the center of rotation of the clip 60, is the outer edges of the clip legs 66 providing the en-gagement portions, is greater than the perpendicular distance of the longitudinal margins 38 from the longitudinal axis of the track 22 when the clip is in the position shown in phan-tom outline by 60'. This structural arrangement of parts provides that when the clip 60 is moved into a perpendicular position the legs 66 tend to move each track upper portion 36 away from said longitudinal axis. This movement of the upper portions 36 is resisted by a pair of resilient bumper pads 68, which are disposed between the spaced web portions 46 and 54 of the track and bracket members respectively and ' attached to said bracket as by adhesive.
As will be understood from FIG. 3, the tendency of the track upper portions 36 to move away from the longitudinal axis of the track 22 results in a tendency for the track low-29 er portions 40 to move toward said longitudinal axis because 1~75~9 ~f the tendency of the track members 34 and 35 to pivot aboutthe bumper pads 68. This pivotal action results in a pressure engagement between the track lower longitudinal margin 44 agai~st the stop means provided by the upwardly turned por-tions 52 of the bracket member 26.
The installation of the bracket and track assembly 10 is believed to be fully understood fr~m the foreg~ing de-scription of parts but for completeness of disclosure will be briefly described with respect to a sliding door assembly 12.
The installation consists essentially of mounting a plurality of bracket members ~6 to associated wall brackets 28 by bolting said upstanding bracket mounting portions 70 to said wall bracket 28, said bracket members and wall brack-ets constituting a support means. With the bracket members 26 in place, and the clips 60 of each bracket rotated in a counterclockwise position, as shown in phantom outline by 60' in FIG. 4, it becomes a relatively simple matter to thread each of the track members 34 and 36 into place, with the webs 46 substantially horizontal if desired, and then rotate said members into the position shown in FIG. 3, such track me~bers being configurated to facilitate camming into place. once the track members 34 and 35 have been correctly aligned and longitudinally located, it is merely a matter of rotating the clips 60 in a clockwise direction so that the legs 66 en-gage the longitudinal margins 38. Continued rotation of the clip 60 urges the track upper portions 36 away from the long-itudinal axis until the clip is substantially perpendicular 29 to the longitudinal axis of the track and exerts a force 759~
against the upper margin portions 38. This results in a pivoting action of ~he track members 34 and 35 about the bumper pads 68 and produces movement of the lower track longitudinal margins 44 against the bracket member upturned ends 52 thereby clamping the track members 34 and 35 in place into a locked position. The relatively flat configuration of the outer face of the clip 60 results in maximum movement of the track upper portions 36 away from the longitudinal axis when the clip corners 72 are perpendicular to the longitudi-nal axis. Further movement of the clip 60, until the com-patible flat faces of the clip 60 are parallel with the mar-gins 38 results in a slight return of the track upper portions 36 and precludes any tendency for the clip to rotate out of position. As will be readily understood the length of the clip legs 66 provides said legs with some resilience which also facilitates the frictional clamping and locking action.
Claims (3)
1. A bracket and track assembly comprising a track including at least one track member, each said track member including a transverse upper portion having a longitudinal margin portion, a transverse lower portion, and a web portion interconnecting said upper and lower portions of each said track member, a bracket mem-ber disposed in embracing relation about each said track member and including a transverse upper portion extending beyond each said track upper portion longitudinal margin portion, a trans-verse lower portion supporting each said track member lower por-tion, a web portion interconnecting said upper and lower portions of the bracket member, and locking means rotatably mounted to said upper portion of the bracket member, and rotatable into lateral engagement with each said track upper portion longitudi-nal margin portion and tending to urge each said track member in-to engagement with said bracket member, the bracket upper portion including a slot overlappingly related to each said track upper portion longitudinal margin portion, and said locking means in-cluding a camming member having a radial arm portion and a depend-ing leg portion extending through said slot and laterally engaging each said track upper portion longitudinal margin portion.
2. An assembly as defined in claim 1, in which the track in-cludes a pair of said track members disposed in spaced side-by-side relation, the longitudinal margin portions of the upper por-tions of the pair of track members being laterally spaced, the transverse lower portions being inwardly turned, each said lower portion having a longitudinal margin portion, and a web portion interconnecting said upper and lower portions of each track mem-ber, the bracket member is of generally U-shape and is embracing-ly disposed about said track members, the transverse upper por-tion of the bracket member provides a pivot axis disposed between the longitudinal margin portions of the track upper portions of the track members, the bracket member includes a pair of opposite-ly disposed, inwardly turned lower portions, each having stop means disposed laterally adjacent the longitudinal margin portion of one of said track lower portions, the bracket member includes a pair of said web portions interconnecting said upper and lower portions of the bracket member, and the locking means is rotatably mounted to said upper portion of the bracket member for rotation about the pivot axis, and rotatable into lateral engagement with the longitudinal margin portions of the track upper portions and tending to urge said track members laterally into engagement with said bracket member, the bracket member upper portion includes a pair of said slots, said slots being opposed and arcuate, said slots being overlappingly related to said track upper portion longitudinal margin portions of the track members, and the camming member has a pair of said depending leg portions, each leg portion being received by one of said slots and engaging one of the track upper portion longitudinal margin portions.
3. An assembly as defined in claim 2, in which the camming member is generally U-shaped and includes a pair of arm portions connecting said leg portions, said arm portions including means for turning said camming member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000389574A CA1147599A (en) | 1980-02-21 | 1981-11-05 | Bracket and door track assembly |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/123,262 US4344206A (en) | 1980-02-21 | 1980-02-21 | Bracket and door track assembly |
| US123,262 | 1980-02-21 | ||
| CA000350422A CA1136488A (en) | 1980-02-21 | 1980-04-23 | Bracket and door track assembly |
| CA000389574A CA1147599A (en) | 1980-02-21 | 1981-11-05 | Bracket and door track assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1147599A true CA1147599A (en) | 1983-06-07 |
Family
ID=27166658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000389574A Expired CA1147599A (en) | 1980-02-21 | 1981-11-05 | Bracket and door track assembly |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1147599A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5197582A (en) * | 1990-04-03 | 1993-03-30 | Northern Eureka Refrigeration Co. Limited | Electric door opener for sliding doors |
-
1981
- 1981-11-05 CA CA000389574A patent/CA1147599A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5197582A (en) * | 1990-04-03 | 1993-03-30 | Northern Eureka Refrigeration Co. Limited | Electric door opener for sliding doors |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |