CA2313945A1 - Plug with safety means for use with counterbalancing systems of garage doors and the like - Google Patents
Plug with safety means for use with counterbalancing systems of garage doors and the like Download PDFInfo
- Publication number
- CA2313945A1 CA2313945A1 CA 2313945 CA2313945A CA2313945A1 CA 2313945 A1 CA2313945 A1 CA 2313945A1 CA 2313945 CA2313945 CA 2313945 CA 2313945 A CA2313945 A CA 2313945A CA 2313945 A1 CA2313945 A1 CA 2313945A1
- Authority
- CA
- Canada
- Prior art keywords
- plug
- interlocking means
- safety means
- counterbalancing
- counterbalancing mechanism
- 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.)
- Granted
Links
- 230000013011 mating Effects 0.000 abstract 2
- 230000009977 dual effect Effects 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
Landscapes
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Abstract
A plug mounted at one end of a torsional spring operatively connected to an overhead shaft of a counterbalancing mechanism of a garage door, wherein the plug comprises projecting interlocking means able to cooperate with corresponding matching means of a mating part of the counterbalancing mechanism, so that when the interlocking means of the plug are inserted into the corresponding matching means and when tension is applied to the torsional spring, the interlocking means interlock with said matching means of the mating part, thereby preventing the plug from being readily removed therefrom. The projecting interlocking means thus act as safety means because they provide an automatic locking mechanism which make the plug operate as a safety device as well. Hence, the plug according to the present invention has a dual purpose, that is, it can operate as a conventional plug, whether it be stationary or winding, as well as a safety device for the counterbalancing mechanism with which it cooperates, because of its projecting interlocking means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2313945 CA2313945C (en) | 1999-07-16 | 2000-07-14 | Plug with safety means for use with counterbalancing systems of garage doors and the like |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14403899P | 1999-07-16 | 1999-07-16 | |
| CA002277646A CA2277646A1 (en) | 1999-07-16 | 1999-07-16 | Security system for stationary plugs in counterbalance systems |
| CA2,277,646 | 1999-07-16 | ||
| US60/144,038 | 1999-07-16 | ||
| CA 2313945 CA2313945C (en) | 1999-07-16 | 2000-07-14 | Plug with safety means for use with counterbalancing systems of garage doors and the like |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2313945A1 true CA2313945A1 (en) | 2001-01-16 |
| CA2313945C CA2313945C (en) | 2008-04-08 |
Family
ID=27170983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2313945 Expired - Fee Related CA2313945C (en) | 1999-07-16 | 2000-07-14 | Plug with safety means for use with counterbalancing systems of garage doors and the like |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2313945C (en) |
-
2000
- 2000-07-14 CA CA 2313945 patent/CA2313945C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2313945C (en) | 2008-04-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20150714 |