US3797005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bar lock for sliding doors
Assignee: Individual
•
Filing: 1971-09-13
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Granted: 1974-03-12
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Expires: 1991-09-13
Abstract
Abstract Apparatus for locking sliding doors including an alarm which will indicate the presence of an unauthorized person when the sliding door is being forced. The apparatus includes a telescoping bar which can be pivotally attached at one end to a sliding door with the remote end of the bar engaging a fixed structure. The remote end of the bar includes a trigger electrically connected to an alarm which is energized when the door is forced open a slight amount.
Inventors
- 👤 C Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:40
CPC Classifications
E; E05; E05B; E05B45/00; E05B45/06; E05B65/00; E05B65/08; E05B65/0888; Y; Y10; Y10T; Y10T292/00; Y10T292/28; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5168
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
173 words
Apparatus for locking a sliding structure relative to a fixed structure comprising a first hollow elongated member, a second elongated member telescopically received within said first member, means for connecting said first and second members together in adjusted position, means for swingably mounting one end of one of said members on one of the sliding or fixed structures, bracket means mounted on the other of the sliding or fixed structures for supporting the free end of the other of said members, the free end of said other member being in axial spaced relationship to a portion of said bracket means to permit slight lateral movement of the sliding structure in one direction, an alarm carried by one of said member, trigger means connecting said alarm to a source of electrical energy, and said trigger means extending outwardly from one of said members, whereby slight lateral movement of the sliding structures causes the trigger to energize said alarm and further lateral movement of the sliding structure is prevented by said first and second members.
Claim 2
Dependent Claim
173 words
Apparatus for locking a sliding structure relative to a fixed structure comprising a first hollow elongated member, a second elongated member telescopically received within said first member, means for connecting said first and second members together in adjusted position, means for swingably mounting one end of one of said members on one of the sliding or fixed structures, bracket means mounted on the other of the sliding or fixed structures for supporting the free end of the other of said members, the free end of said other member being in axial spaced relationship to a portion of said bracket means to permit slight lateral movement of the sliding structure in one direction, an alarm carried by one of said member, trigger means connecting said alarm to a source of electrical energy, and said trigger means extending outwardly from one of said members, whereby slight lateral movement of the sliding structures causes the trigger to energize said alarm and further lateral movement of the sliding structure is prevented by said first and second members.
Claim 3
Dependent Claim
32 words
The structure of claim 1 in which said first and second members are disposed in a generally horizontal plane in locking position and disposed in a generally vertical plane in unlocked position.
Claim 4
Dependent Claim
35 words
The structure of claim 1 in which said first and second members are disposed at an angle to a horizontal plane in locking position to permit limited lateral and vertical movement of the sliding structure.
Claim 5
Dependent Claim
203 words
A bar lock for a sliding door comprising a first elongated member having opposed openings adjacent one end, a second elongated member telescopically received within said first member, said second member having a plurality of openings alignable with the opposed openings of said first member, pin means receivable within aligned openings of said first and second members, signal means carried by said second member, switch means extending from said second member and selectively electrically connecting said signal means to a source of electrical energy, means for swingably mounting one end of said first member on said sliding door or a fixed structure adjacent thereto, bracket means mountable on the other of said sliding door or said fixed structure in a position to support the free end of the other member and providing stop means engageable by said switch means, said free end normally being axially spaced from said stop means to permit slight lateral movement of said movable structure, whereby slight lateral movement of the sliding door causes said switch means to engage the stop means and close an electrical circuit to energize the signal, and said first and second members provide a positive stop to prevent further movement of said sliding door.
Claim 6
Dependent Claim
203 words
A bar lock for a sliding door comprising a first elongated member having opposed openings adjacent one end, a second elongated member telescopically received within said first member, said second member having a plurality of openings alignable with the opposed openings of said first member, pin means receivable within aligned openings of said first and second members, signal means carried by said second member, switch means extending from said second member and selectively electrically connecting said signal means to a source of electrical energy, means for swingably mounting one end of said first member on said sliding door or a fixed structure adjacent thereto, bracket means mountable on the other of said sliding door or said fixed structure in a position to support the free end of the other member and providing stop means engageable by said switch means, said free end normally being axially spaced from said stop means to permit slight lateral movement of said movable structure, whereby slight lateral movement of the sliding door causes said switch means to engage the stop means and close an electrical circuit to energize the signal, and said first and second members provide a positive stop to prevent further movement of said sliding door.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |