US3836187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-door lock device
Assignee: Individual
•
Filing: 1973-05-24
•
Granted: 1974-09-17
•
Expires: 1993-05-24
Abstract
Abstract A two-door lock device for locking a building inner door that swings inward to a building outer door that swings outward, to lock the doors against unauthorized opening of the doors of the building from the outside. The lock device includes an elongated wire cable having the outer end attached to the inner side of the outer door, and the inner end thereof passed over one edge of the inner door and secured interior of the inner door.
Inventors
- 👤 L Buettner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:05
CPC Classifications
E; E05; E05C; E05C7/00; Y; Y10; Y10T; Y10T292/00; Y10T292/28; Y10T292/283
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
160 words
A two-door lock device for locking a building inner door that swings inward to a building outer door that swings outward, to lock the doors against unauthorized opening of the doors from the outside of the building, comprising: a. an elongated flexible member having an outer attachment means on the outer end thereof, and an inner attachment means on the inner end thereof; b. a first retainer means operatively mounted on the inside of said outer door and being operatively attached to the outer attachment means on said elongated flexible member; c. a second retainer means operatively mounted interior of said inner door and being opeRatively attached to the inner attachment means on said elongated flexible member; and, d. said elongated flexible member is positioned to pass over one edge of the inner door, whereby the inner and outer doors are locked together, and neither of said doors can be opened from the outer sides thereof, thereby preventing unauthorized entry.
Claim 2
Dependent Claim
160 words
A two-door lock device for locking a building inner door that swings inward to a building outer door that swings outward, to lock the doors against unauthorized opening of the doors from the outside of the building, comprising: a. an elongated flexible member having an outer attachment means on the outer end thereof, and an inner attachment means on the inner end thereof; b. a first retainer means operatively mounted on the inside of said outer door and being operatively attached to the outer attachment means on said elongated flexible member; c. a second retainer means operatively mounted interior of said inner door and being opeRatively attached to the inner attachment means on said elongated flexible member; and, d. said elongated flexible member is positioned to pass over one edge of the inner door, whereby the inner and outer doors are locked together, and neither of said doors can be opened from the outer sides thereof, thereby preventing unauthorized entry.
Claim 3
Dependent Claim
23 words
A two-door lock device as defined in claim 1, wherein: a. said cable is passed over the upper edge of the inner door.
Claim 4
Dependent Claim
23 words
A two-door lock device as defined in claim 1, wherein: a. said cable is passed over a side edge of the inner door.
Claim 5
Dependent Claim
51 words
A two-door lock device as defined in claim 1, wherein: a. said first retainer means comprises a retainer bracket, and said elongated flexible member comprises a wire cable and said outer attachment means comprises a loop formed on the outer end of the wire cable and secured to the retainer bracket.
Claim 6
Dependent Claim
40 words
A two-door lock device as defined in claim 1, including: a. a third retainer means operatively mounted interior of said inner door; and, b. an intermediate attachment means on the elongated flexible member operatively attached to said third retainer means.
Claim 7
Dependent Claim
30 words
A two-door lock device as defined in claim 1, including: a. a guard member mounted on the door jamb, under the elongated flexible member, between the inner and outer doors.
Claim 8
Dependent Claim
20 words
A two-door lock device as defined in claim 6, wherein said guard member comprises: a. an elongated L-shaped guard member.
Claim 9
Dependent Claim
20 words
A two-door lock device as defined in claim 6, wherein said guard member comprises: a. an elongated U-shaped guard member.
Claim 10
Dependent Claim
46 words
A two-door lock device as defined in claim 5, wherein: a. said second retainer means is mounted on a stationary portion of the building in which said doors are mounted, and said third retainer means is operatively mounted on the inner side of said inner door.
References Cited (Backward Citations)
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US694975A
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Cited
US1063404A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |