US4987753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Padlock
Assignee: Individual
•
Filing: 1989-12-06
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Granted: 1991-01-29
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Expires: 2009-12-06
Abstract
Abstract An improved padlock, and in particular, one having a lock body which has a pivot at one end and a lock mechanism at its other end, a shackle having two legs of equal length where one leg is connected to an elliptical connecting end and the other leg is connected to a notch.
Inventors
- 👤 Wen T. Kuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:08
CPC Classifications
E; E05; E05B; E05B67/00; E05B67/06; E05B67/08; E05B67/10; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/437; Y10T70/446; Y10T70/452; Y10T70/454; Y10T70/465; Y10T70/474; Y10T70/476
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
An improved padlock comprising: a lock body having a through opening defining a through bore, said lock body having opposite ends for removable insert of a lock mechanism within one end and a pivot member fixedly insertable within the other end, said lock body including an inclined wall through opening; a U-shaped shackle member having opposing legs of equal length, one of said legs being insertable within said inclined wall opening, and said other leg being rotatably mounted on said pivot member external said lock body; an engaging member insertable within said lock body through opening and rotatable with respect to said lock body, said engaging member being rotatable into capturing relation with one of said legs of said shackle member having a notch formed therein, said engaging member having a square hole for passing therethrough of a lug member mounted on said locking mechanism, said other leg of said shackle being elliptically contoured for contacting a wall of said pivot member when said shackle is opened through a predetermined angle.
Claim 2
Dependent Claim
171 words
An improved padlock comprising: a lock body having a through opening defining a through bore, said lock body having opposite ends for removable insert of a lock mechanism within one end and a pivot member fixedly insertable within the other end, said lock body including an inclined wall through opening; a U-shaped shackle member having opposing legs of equal length, one of said legs being insertable within said inclined wall opening, and said other leg being rotatably mounted on said pivot member external said lock body; an engaging member insertable within said lock body through opening and rotatable with respect to said lock body, said engaging member being rotatable into capturing relation with one of said legs of said shackle member having a notch formed therein, said engaging member having a square hole for passing therethrough of a lug member mounted on said locking mechanism, said other leg of said shackle being elliptically contoured for contacting a wall of said pivot member when said shackle is opened through a predetermined angle.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1994-01-28 | 1994-07-30 | 1995-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-28 | 1998-07-30 | 1999-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-28 | 2002-07-30 | 2003-01-29 | $7700.00 | Window Closed / Lapsed |