US3720083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Padlock type locks
Assignee: Individual
•
Filing: 1971-06-11
•
Granted: 1973-03-13
•
Expires: 1991-06-11
Abstract
Abstract A lock of the padlock type comprising, in one embodiment of the invention, a substantially U-shaped yoke having legs provided with notches, the notched parts of the legs entering a housing which bridges the space between the legs. The housing has a cavity containing a movable, spring-biased plug that is effective when in one position, to hold locking pins in position to engage the notches in the legs. The plug when in another position permitting movement of the pins to disengage them from the notches. A lock casing fits in the housing and normally blocks movement of the plug to maintain the parts in locking position and when the lock casing is partly or completely removed from the housing it permits movement of the plug to allow shifting of the pins in order to disengage them from the notches in the legs. The lock mechanism in the lock casing includes a retractible latch engageable with the plug to hold the lock casing from withdrawal out of the housing unless a suitable key is used to retract the latch. In another embodiment of the invention, the lock casing has a part of a spline engaging one of the legs of the yoke, the spline becoming disengaged from the yoke by axial shift of the lock casing and the lock carries a latch holding the lock casing against axial movement until release of the latch by operation of a key in the lock.
Inventors
- 👤 J Wellekens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:24
CPC Classifications
E; E05; E05B; E05B67/00; E05B67/06; E05B67/22; E05B67/24; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/437; Y10T70/446; Y10T70/452; Y10T70/459; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7661
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
123 words
A padlock having a U-shaped yoke provided with spaced legs, a housing extending between and connecting the legs, the housing containing tumbler pins, the yoke having recesses into which the tumbler pins enter to hold the yoke connected to the housing, a tumbler-moving element movable in the housing, spring means biasing said element to a position wherein it permits movement of the tumbler pins away from the legs, a cylindrical lock casing slidably adjustable in the housing and operating to maintain the tumbler-moving element in locking position against the bias of the spring means, a latch for holding the lock casing against axial movement until the latch is retracted by operation of a key in the lock mechanism contained within the lock casing.
Claim 2
Dependent Claim
123 words
A padlock having a U-shaped yoke provided with spaced legs, a housing extending between and connecting the legs, the housing containing tumbler pins, the yoke having recesses into which the tumbler pins enter to hold the yoke connected to the housing, a tumbler-moving element movable in the housing, spring means biasing said element to a position wherein it permits movement of the tumbler pins away from the legs, a cylindrical lock casing slidably adjustable in the housing and operating to maintain the tumbler-moving element in locking position against the bias of the spring means, a latch for holding the lock casing against axial movement until the latch is retracted by operation of a key in the lock mechanism contained within the lock casing.
Claim 3
Dependent Claim
123 words
A padlock having a U-shaped yoke provided with spaced legs, a housing extending between and connecting the legs, the housing containing tumbler pins, the yoke having recesses into which the tumbler pins enter to hold the yoke connected to the housing, a tumbler-moving element movable in the housing, spring means biasing said element to a position wherein it permits movement of the tumbler pins away from the legs, a cylindrical lock casing slidably adjustable in the housing and operating to maintain the tumbler-moving element in locking position against the bias of the spring means, a latch for holding the lock casing against axial movement until the latch is retracted by operation of a key in the lock mechanism contained within the lock casing.
Claim 4
Dependent Claim
123 words
A padlock having a U-shaped yoke provided with spaced legs, a housing extending between and connecting the legs, the housing containing tumbler pins, the yoke having recesses into which the tumbler pins enter to hold the yoke connected to the housing, a tumbler-moving element movable in the housing, spring means biasing said element to a position wherein it permits movement of the tumbler pins away from the legs, a cylindrical lock casing slidably adjustable in the housing and operating to maintain the tumbler-moving element in locking position against the bias of the spring means, a latch for holding the lock casing against axial movement until the latch is retracted by operation of a key in the lock mechanism contained within the lock casing.
Claim 5
Dependent Claim
58 words
A lock according to claim 1, wherein the tumbler-moving element is a spring-biased plug provided with projections blocking movement of the tumbler pins when the lock casing is in a locked position, means for limiting the shifting movement of the plug and means on the plug engaged by the latch to hold the lock casing against withdrawal movement.
Claim 6
Dependent Claim
155 words
A padlock comprising, a U-shaped yoke having integrally connected spaced notched legs and connecting the legs, a housing fitted over the legs and having movable locking pins engaging the notches in the legs, the housing having a cavity in which a plug has a limited sliding movement, spring means for biasing the plug to a position wherein it permits movement of the locking pins, a cylindrical lock casing fitted in the housing and having a latch engaging the plug to hold the lock casing from withdrawal out of the housing, said plug having projections engaging ends of the pins to hold said pins in a projected position to engage with the notches in the legs, the plug being shiftable under the bias of the spring means when the lock casing is at least partly extended out of the housing to free the locking pins and permit them to be disengaged from notches in the legs.
Claim 7
Dependent Claim
155 words
A padlock comprising, a U-shaped yoke having integrally connected spaced notched legs and connecting the legs, a housing fitted over the legs and having movable locking pins engaging the notches in the legs, the housing having a cavity in which a plug has a limited sliding movement, spring means for biasing the plug to a position wherein it permits movement of the locking pins, a cylindrical lock casing fitted in the housing and having a latch engaging the plug to hold the lock casing from withdrawal out of the housing, said plug having projections engaging ends of the pins to hold said pins in a projected position to engage with the notches in the legs, the plug being shiftable under the bias of the spring means when the lock casing is at least partly extended out of the housing to free the locking pins and permit them to be disengaged from notches in the legs.
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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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |