Patent US4531388A successfully refreshed from Google Patents.
US4531388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Change code system in combination padlocks
Assignee: Talleres de Escoriaza SA
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Filing: 1983-03-15
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Granted: 1985-07-30
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Expires: 2003-03-15
Abstract
Abstract A combination padlock of the type in which code wheels are mounted on a shaft in the housing and a bushing is associated with each code wheel, the padlock combination being changed by relative rotation between the code wheels and the bushings, in which the shaft is axially fixed in relation to the housing, and the bushings are movable axially on the shaft to release the code wheels to enable the combination to be changed, the bushings being moved by manipulation of the shackle when the shackle is in the open position.
Inventors
- 👤 Jose I. P. Garro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:46
CPC Classifications
E; E05; E05B; E05B37/00; E05B37/02; E05B37/025; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/417; Y10T70/422; Y10T70/424; Y10T70/70; Y10T70/7153; Y10T70/7322; Y10T70/7328; Y10T70/7339
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
137 words
A combination padlock of the type having a housing, a shackle, code wheels mounted on a shaft in the housing and a bushing associated with each code wheel on the shaft, the padlock combination being changed by relative rotation between the code wheel and the bushings, said bushings being in end to end relationship, means biasing said bushings toward one end of the shaft and into engagement with the code wheels, said shaft being axially fixed in relation to the housing and the code wheels, and said bushings being movable axially on the shaft to become disengaged from the code wheels by movement on the shaft against the force of the biasing means, and means for causing such movement of the bushings by engagement with the bushing at the end of the shaft opposite the biasing means.
Claim 2
Dependent Claim
137 words
A combination padlock of the type having a housing, a shackle, code wheels mounted on a shaft in the housing and a bushing associated with each code wheel on the shaft, the padlock combination being changed by relative rotation between the code wheel and the bushings, said bushings being in end to end relationship, means biasing said bushings toward one end of the shaft and into engagement with the code wheels, said shaft being axially fixed in relation to the housing and the code wheels, and said bushings being movable axially on the shaft to become disengaged from the code wheels by movement on the shaft against the force of the biasing means, and means for causing such movement of the bushings by engagement with the bushing at the end of the shaft opposite the biasing means.
Claim 3
Dependent Claim
40 words
A combination padlock as set out in claim 1 in which said means for causing the bushings to move axially on the shaft to the disengaged position includes cam means on a leg of the shackle retained in the housing.
Claim 4
Dependent Claim
46 words
A combination padlock as set out in claim 2 in which said cam means is so shaped and positioned that axial movement of the retained shackle leg into the housing beyond the locking position of the shackle causes said bushings to move axially on the shaft.
Claim 5
Dependent Claim
149 words
A combination padlock of the type having a housing, a shackle, said shackle having a long leg retained in the housing and a short leg releasable from the housing, a code mechanism comprising an axially fixed shaft extending from a position adjacent to the long shackle leg in the housing to an opposite side of the housing, a series of code wheels on said shaft, and a locking bushing associated with each code wheel on the shaft, said bushings being in end to end relationship and being biased into engagement with said code wheels and toward the shackle leg, the end bushing at the end of the shaft adjacent the leg having an extended portion projecting beyond the end of the shaft, and means for engaging said extended portion to move the bushings axially on the shaft against the biasing force to disengage the bushings from the code wheels.
Claim 6
Dependent Claim
149 words
A combination padlock of the type having a housing, a shackle, said shackle having a long leg retained in the housing and a short leg releasable from the housing, a code mechanism comprising an axially fixed shaft extending from a position adjacent to the long shackle leg in the housing to an opposite side of the housing, a series of code wheels on said shaft, and a locking bushing associated with each code wheel on the shaft, said bushings being in end to end relationship and being biased into engagement with said code wheels and toward the shackle leg, the end bushing at the end of the shaft adjacent the leg having an extended portion projecting beyond the end of the shaft, and means for engaging said extended portion to move the bushings axially on the shaft against the biasing force to disengage the bushings from the code wheels.
Claim 7
Dependent Claim
21 words
A padlock as set out in claim 4 in which said means comprises an axial cam on the retained shackle leg.
Claim 8
Dependent Claim
34 words
A padlock as set out in claim 5 in which the extended portion of the end bushing and said retained leg have cooperating means for preventing removal of the retained leg from the housing.
Claim 9
Dependent Claim
19 words
A padlock as set out in claim 4 in which said extended portion encloses the end of the shaft.
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) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |