US3970340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hinge pin locks
Assignee: Lawrence Peska Associates Inc
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Filing: 1975-06-19
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Granted: 1976-07-20
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Expires: 1995-06-19
Abstract
Abstract A tamper proof hinge pin-lock which prevents unauthorized removal of the door from the exterior thereof.
Inventors
- 👤 Kenneth E. Taft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:12
CPC Classifications
E; E05; E05D; E05D11/00; E05D11/0018; E05D11/0027; E05D2011/0036; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; Y; Y10; Y10S; Y10S292/00; Y10S292/17; Y10T; Y10T292/00; Y10T292/42
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
135 words
A hinge pin-lock comprising an elongated member and a sleeve member having one end blocked and adapted to releasably receive a portion of said elongated member, said elongated member defining a shaft terminating at one end in an enlarged annular head, said shaft defining a second head, said second head being disposed on shaft forward of said first head, said sleeve member having a depth about equal to the distance on said shaft from head to head and defining a substantially toroidal base portion, a side of said base portion being elongated and defining a substantially conically shaped protrusion, said base member being operative to slidably engage a portion of said elongated member, the distal end of said head adapted to abut said closed end of said sleeve whereby movement of said member is arrested.
Claim 2
Dependent Claim
135 words
A hinge pin-lock comprising an elongated member and a sleeve member having one end blocked and adapted to releasably receive a portion of said elongated member, said elongated member defining a shaft terminating at one end in an enlarged annular head, said shaft defining a second head, said second head being disposed on shaft forward of said first head, said sleeve member having a depth about equal to the distance on said shaft from head to head and defining a substantially toroidal base portion, a side of said base portion being elongated and defining a substantially conically shaped protrusion, said base member being operative to slidably engage a portion of said elongated member, the distal end of said head adapted to abut said closed end of said sleeve whereby movement of said member is arrested.
Claim 3
Dependent Claim
15 words
A lock as defined in claim 1 wherein said sleeve member is generally hat shaped.
Claim 4
Dependent Claim
19 words
A lock as defined in claim 1 wherein said first and second heads are of approximately the same diameter.
Claim 5
Dependent Claim
18 words
A lock as defined in claim 1 wherein said base portion contains a flange at one end thereof.
Claim 6
Dependent Claim
28 words
A lock as defined in claim 1 wherein the internal diameter of said base portion has an internal diameter greater than the external diameter of said first head.
Claim 7
Dependent Claim
16 words
A lock as defined in claim 1 constructed of a substantially impact and shock resistant material.
Claim 8
Dependent Claim
19 words
A lock as defined in claim 1 wherein the opposite end of said shaft is beveled at the terminous.
Claim 9
Dependent Claim
16 words
A lock as defined in claim 1 wherein said two heads have approximately the same diameter.
Claim 10
Dependent Claim
36 words
A lock as defined in claim 1 wherein said closed end of said sleeve defines a transverse slot adapted to permit expansion of said sleeve when said distal end of said first head engages said sleeve.
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) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |