CA2401329A1 - Residential cable failure device - Google Patents
Residential cable failure device Download PDFInfo
- Publication number
- CA2401329A1 CA2401329A1 CA 2401329 CA2401329A CA2401329A1 CA 2401329 A1 CA2401329 A1 CA 2401329A1 CA 2401329 CA2401329 CA 2401329 CA 2401329 A CA2401329 A CA 2401329A CA 2401329 A1 CA2401329 A1 CA 2401329A1
- Authority
- CA
- Canada
- Prior art keywords
- door
- failure device
- cable failure
- force
- residential
- 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
- 238000004804 winding Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D13/00—Accessories for sliding or lifting wings, e.g. pulleys, safety catches
- E05D13/003—Anti-dropping devices
- E05D13/006—Anti-dropping devices fixed to the wing, i.e. safety catches
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05DÂ 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
- E05Y2900/106—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for garages
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Description
RESIDENTIAL CABLE FAILURE DEVICE
Field of the invention This residential cable failure device will be used in the garage door industry.
Summary of the invention Presently, the breaking of cable sustaining a garage door can result in the free falling of the door and that can be possibly dangerous for human beings. This invention is used to prevent the free fall of the door when one or two door l0 supporting cables break. This is achieved by the use of a knife which engages the track when a cable breaks. Free fall of the door is thereby stopped.
Description of a preferred embodiment:
There is at least one system that resolves the problem of a falling door when the cable breaks but it is a heavy duty system for commercial doors. The present invention is directed to residential applications, and has as its goal a simple mechanism.
It is well known that a garage door needs to have a counterbalancing system in
Field of the invention This residential cable failure device will be used in the garage door industry.
Summary of the invention Presently, the breaking of cable sustaining a garage door can result in the free falling of the door and that can be possibly dangerous for human beings. This invention is used to prevent the free fall of the door when one or two door l0 supporting cables break. This is achieved by the use of a knife which engages the track when a cable breaks. Free fall of the door is thereby stopped.
Description of a preferred embodiment:
There is at least one system that resolves the problem of a falling door when the cable breaks but it is a heavy duty system for commercial doors. The present invention is directed to residential applications, and has as its goal a simple mechanism.
It is well known that a garage door needs to have a counterbalancing system in
2 0 order to easily open and close it. That counterbalancing is achieved by usage of either one or many torsion springs. That spring is fixed to two plugs: the first one being a winding plug and the other one a stationary plug. The winding plug is fixed on the shaft and the stationary plug is fixed on a bearing plate. To transmit the force to the door, there are two drums on the shaft on which cables 2 5 are installed. These cables are fixed on two bottom brackets (one on each side) at the last panel of the door.
Referring now to Figures 1 and 2, there is shown an overview of the different components.
Reference numeral 1 is the special knife, 2 is a roller, 3 is a bottom support bracket, 4 is the cable door and 5 is an extension spring.
During the normal operation of the door, the system is in armed position (not engaged) Figures 3 and 4). The roller is free in the track. That state is maintained because the force (a) is stronger than force (b). The force (a) is the tension in the cable coming from the counterbalancing spring and the force (b) is caused by the extension spring which is part of the device. When the cable breaks, the force (a) becomes near zero so by the effect of the force (b), the 1 o specially designed knife engages into the track (Figures 5 and 6) and thereby prevents the door from falling. When the system is activated, it is then still possible to lift the door, but the device must be reset in order to close the door.
Figure 7 gives an overview on how the special knife engages the track.
Referring now to Figures 1 and 2, there is shown an overview of the different components.
Reference numeral 1 is the special knife, 2 is a roller, 3 is a bottom support bracket, 4 is the cable door and 5 is an extension spring.
During the normal operation of the door, the system is in armed position (not engaged) Figures 3 and 4). The roller is free in the track. That state is maintained because the force (a) is stronger than force (b). The force (a) is the tension in the cable coming from the counterbalancing spring and the force (b) is caused by the extension spring which is part of the device. When the cable breaks, the force (a) becomes near zero so by the effect of the force (b), the 1 o specially designed knife engages into the track (Figures 5 and 6) and thereby prevents the door from falling. When the system is activated, it is then still possible to lift the door, but the device must be reset in order to close the door.
Figure 7 gives an overview on how the special knife engages the track.
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2401329 CA2401329A1 (en) | 2002-09-04 | 2002-09-04 | Residential cable failure device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2401329 CA2401329A1 (en) | 2002-09-04 | 2002-09-04 | Residential cable failure device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2401329A1 true CA2401329A1 (en) | 2004-03-04 |
Family
ID=32046526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2401329 Abandoned CA2401329A1 (en) | 2002-09-04 | 2002-09-04 | Residential cable failure device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2401329A1 (en) |
-
2002
- 2002-09-04 CA CA 2401329 patent/CA2401329A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |