US3984137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock device
Assignee: Individual
•
Filing: 1975-07-14
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Granted: 1976-10-05
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Expires: 1995-07-14
Abstract
Abstract A security lock which secures a building entrance against unauthorized entry by linking together the outer and inner doors against their respective door frame stops. This invention comprises link members wherein one member thereof is anchored to the outer door and the other member is a hinged link which passes through the inner door and is prevented from being withdrawn by a manually operated latch. When the security lock is not in use, the hinged link is pivoted out of the way.
Inventors
- 👤 Roger Tinkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:40
CPC Classifications
E; E05; E05C; E05C7/00; E05C7/02; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/1014; Y10T292/1022; Y10T292/1028; Y10T292/28; Y10T292/289; Y10T292/291; Y10T292/304
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
112 words
The combination of: a jamb post means in a door frame assembly; a door hinged to close against the edge of said jamb post means; a second door having a hole therethrough hinged to close against the opposite edge of said jamb post means; an elongated member connected to said first mentioned door, said elongated member being longitudinally extensive to project the distal end thereof through said hole in said second door when said first mentioned door and said second mentioned door are closed against said edges of said jamb post means; and lock means on said second door for connecting said distal end of said elongated member to said second door.
Claim 2
Dependent Claim
112 words
The combination of: a jamb post means in a door frame assembly; a door hinged to close against the edge of said jamb post means; a second door having a hole therethrough hinged to close against the opposite edge of said jamb post means; an elongated member connected to said first mentioned door, said elongated member being longitudinally extensive to project the distal end thereof through said hole in said second door when said first mentioned door and said second mentioned door are closed against said edges of said jamb post means; and lock means on said second door for connecting said distal end of said elongated member to said second door.
Claim 3
Dependent Claim
61 words
The combination of claim 1 wherein said hole in said second door is further characterized as being adjacent said jamb post means, and said elongated member is further characterized as being pivotedly connected to said first mentioned door adjacent said jamb post means and in axial alignment with said hole when said elongated member longitudinally projects from said first mentioned door.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-05 | 1980-04-05 | 1980-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-05 | 1984-04-05 | 1984-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-05 | 1988-04-05 | 1988-10-05 | $7700.00 | Window Closed / Lapsed |