Patent US3597944A successfully refreshed from Google Patents.
US3597944A
Expired / Lapsed
US
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Padlocks
Assignee: Individual
•
Filing: 1970-01-27
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Granted: 1971-08-10
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Expires: 1990-01-27
Abstract
Abstract A padlock includes a housing having a U-shaped locking bolt with a pair of legs extending into the housing. One of the legs is of increased diameter and a recess is defined in the increased diameter portion of the leg which is arranged to receive a movable latching member. The recess and the latching member interlock to prevent inadvertent unlocking of the padlock, except by operation of the operating mechanism of the lock.
Inventors
- 👤 Noel Litvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:52
CPC Classifications
E; E05; E05B; E05B67/00; E05B67/06; E05B67/22; E05B67/24; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/487; Y10T70/491; Y10T70/50; Y10T70/5611; Y10T70/5757; Y10T70/5765; Y10T70/5805
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
115 words
In a padlock of the type including a housIng, a substantially U-shaped locking bolt having unequal length legs and a latching member movable into and out of latching engagement with the longer of the two legs of the locking bolt, the improvement comprising in combination therewith: an enlarged diameter portion on the distal end of said longer leg of a strength substantially greater than the remainder of said bolt, a recess defined in said greater strength enlarged diameter portion which receives the latching member when the latching member is moved into latching engagement therewith, and limit means cooperating with said enlarged diameter portion for limiting the movement of the longer leg out of the housing.
Claim 2
Dependent Claim
115 words
In a padlock of the type including a housIng, a substantially U-shaped locking bolt having unequal length legs and a latching member movable into and out of latching engagement with the longer of the two legs of the locking bolt, the improvement comprising in combination therewith: an enlarged diameter portion on the distal end of said longer leg of a strength substantially greater than the remainder of said bolt, a recess defined in said greater strength enlarged diameter portion which receives the latching member when the latching member is moved into latching engagement therewith, and limit means cooperating with said enlarged diameter portion for limiting the movement of the longer leg out of the housing.
Claim 3
Dependent Claim
18 words
The padlock of claim 1 wherein said limit means is operable independent of said recess and latching member.
Claim 4
Dependent Claim
20 words
The padlock of claim 1 wherein said enlarged diameter portion is formed in integral one-piece relationship with said longer leg.
Claim 5
Dependent Claim
21 words
The padlock of claim 1 wherein said enlarged diameter portion comprises an elongated annular bushing which axially receives said longer leg.
Claim 6
Dependent Claim
30 words
The padlock of claim 1 wherein said limit means comprises a second recess defined on said enlarged diameter portion and projecting stop means projecting from the housing into said recess.
Claim 7
Dependent Claim
51 words
The padlock of claim 1 including means normally urging said latching member into latching engagement with the longer of the two legs and restraining means in said housing to prevent movement of said latching member out of said latching engagement when the force exerted by said urging means is substantially diminished.
Claim 8
Dependent Claim
38 words
The padlock of claim 6 wherein said restraining means comprises projecting means in said recess and said latching member includes a projecting member arranged to contact and be restrained by said projecting means when said force is diminished.
References Cited (Backward Citations)
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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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |