US4082334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interior security device for double doors
Assignee: Individual
•
Filing: 1977-06-22
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Granted: 1978-04-04
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Expires: 1997-06-22
Abstract
Abstract A metallic interior security device for double doors comprising a plate of sufficient length to extend beyond adjacent door knobs of the double doors. Formed in the plate are longitudinally spaced slots. The slots are elongated in the longitudinal direction of the plate and are disposed along the plate to receive the neck or narrow portions of the adjacent door knobs, respectively. The width of the elongated slots is greater than the diameter of the neck portions of the door knobs to accommodate the neck portions thereof simultaneously, and is of a lesser diameter than the diameter of the enlarged portions of the door knobs to prevent the removal of the door knobs from locking engagement with the plate.
Inventors
- 👤 Victor S. Volta
- 👤 Joe E. Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:50
CPC Classifications
E; E05; E05C; E05C19/00; E05C19/003; Y; Y10; Y10S; Y10S292/00; Y10S292/21; Y10T; Y10T292/00; Y10T292/34
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
148 words
In combination, a security device and double doors, said double doors having adjacent door knobs, said security device comprising a rigid plate with an upper wall and lower wall and having a longitudinal direction and a transverse direction, longitudinally spaced openings formed in the lower wall of said plate to receive respectively the narrow portions of adjacent door knobs, and longitudinally spaced and longitudinally extending slots formed in said plate intermediate the upper and lower walls thereof communicating respectively with said openings formed in said plate for locating therein simultaneously the narrow portions of said adjacent door knobs, the transverse dimension of said slots being greater than the narrow portions of the respective door knobs, and lesser than the enlarged portions of the respective door knobs to prevent the opening movement of said double doors when the narrow portions of said knobs are respectively received by said slots.
Claim 2
Dependent Claim
148 words
In combination, a security device and double doors, said double doors having adjacent door knobs, said security device comprising a rigid plate with an upper wall and lower wall and having a longitudinal direction and a transverse direction, longitudinally spaced openings formed in the lower wall of said plate to receive respectively the narrow portions of adjacent door knobs, and longitudinally spaced and longitudinally extending slots formed in said plate intermediate the upper and lower walls thereof communicating respectively with said openings formed in said plate for locating therein simultaneously the narrow portions of said adjacent door knobs, the transverse dimension of said slots being greater than the narrow portions of the respective door knobs, and lesser than the enlarged portions of the respective door knobs to prevent the opening movement of said double doors when the narrow portions of said knobs are respectively received by said slots.
Claim 3
Dependent Claim
20 words
A combination as claimed in claim 1 wherein said longitudinally spaced openings are in the form of transversely disposed slots.
Claim 4
Dependent Claim
21 words
A combination as claimed in claim 1 wherein said longitudinally extending slots formed in said plate are of different longitudinal dimensions.
Claim 5
Dependent Claim
21 words
A combination as claimed in claim 2 wherein said longitudinally extending slots formed in said plate are of different longitudinal dimensions.
Claim 6
Dependent Claim
14 words
A combination as claimed in claim 4 wherein said plate is made from metal.
Claim 7
Dependent Claim
25 words
A combination as claimed in claim 1 wherein said plate is reduced in thickness in the direction from said upper wall to said lower wall.
Claim 8
Dependent Claim
25 words
A combination as claimed in claim 3 wherein said plate is reduced in thickness in the direction from said upper wall to said lower wall.
Claim 9
Dependent Claim
25 words
A combination as claimed in claim 4 wherein said plate is reduced in thickness in the direction from said upper wall to said lower wall.
Claim 10
Dependent Claim
25 words
A combination as claimed in claim 5 wherein said plate is reduced in thickness in the direction from said upper wall to said lower wall.
Claim 11
Dependent Claim
103 words
A security device for double doors with adjacent door knobs comprising a rigid plate with an upper wall and a lower wall and having a longitudinal direction and a transverse direction, longitudinally spaced openings formed in the lower wall of said plate to receive respectively the narrow portions of adjacent door knobs, and longitudinally spaced and longitudinally extending slots formed in said plate intermediate the upper and lower walls thereof communicating respectively with said openings formed in said plate for locating therein simultaneously the narrow portions of adjacent door knobs, said longitudinal extending slots formed in said plate being of different longitudinal dimensions.
Claim 12
Dependent Claim
103 words
A security device for double doors with adjacent door knobs comprising a rigid plate with an upper wall and a lower wall and having a longitudinal direction and a transverse direction, longitudinally spaced openings formed in the lower wall of said plate to receive respectively the narrow portions of adjacent door knobs, and longitudinally spaced and longitudinally extending slots formed in said plate intermediate the upper and lower walls thereof communicating respectively with said openings formed in said plate for locating therein simultaneously the narrow portions of adjacent door knobs, said longitudinal extending slots formed in said plate being of different longitudinal dimensions.
Claim 13
Dependent Claim
26 words
A security device as claimed in claim 10 wherein said plate is reduced in thickness in the direction from said upper wall to said lower wall.
Claim 14
Dependent Claim
21 words
A security device as claimed in claim 10 wherein said longitudinally spaced openings are in the form of transversely disposed slots.
Claim 15
Dependent Claim
106 words
A security device for double doors with adjacent door knobs comprising a rigid plate with an upper wall and lower wall and having a longitudinal direction and a transverse direction, longitudinally spaced openings formed in the lower wall of said plate to receive respectively the narrow portions of adjacent door knobs, and longitudinally spaced and longitudinally extending slots formed in said plate intermediate the upper and lower walls thereof communicating respectively with said openings formed in said plate for locating therein simultaneously the narrow portions of adjacent door knobs, said plate being reduced in thickness in the direction from said upper wall to said lower wall.
Claim 16
Dependent Claim
106 words
A security device for double doors with adjacent door knobs comprising a rigid plate with an upper wall and lower wall and having a longitudinal direction and a transverse direction, longitudinally spaced openings formed in the lower wall of said plate to receive respectively the narrow portions of adjacent door knobs, and longitudinally spaced and longitudinally extending slots formed in said plate intermediate the upper and lower walls thereof communicating respectively with said openings formed in said plate for locating therein simultaneously the narrow portions of adjacent door knobs, said plate being reduced in thickness in the direction from said upper wall to said lower wall.
Claim 17
Dependent Claim
21 words
A security device as claimed in claim 13 wherein said longitudinally spaced openings are in the form of transversely disposed slots.
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) | 1981-04-03 | 1981-10-03 | 1982-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-03 | 1985-10-03 | 1986-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-03 | 1989-10-03 | 1990-04-04 | $7700.00 | Window Closed / Lapsed |