US3667261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Push button door lock
Assignee: TIME RESEARCH DEV CORP
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Filing: 1971-01-08
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Granted: 1972-06-06
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Expires: 1991-01-08
Abstract
Abstract A compact push button lock is provided which can be used as a door lock, automobile lock or for various other purposes. The lock has a large number of permutations and permits the owner to set the lock to a new combination without disassembling the lock or the use of tools.
Inventors
- 👤 Thomas K Mcgourty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:15
CPC Classifications
E; E05; E05B; E05B37/00; E05B37/16; E05B37/166; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5611; Y10T70/5757; Y10T70/5765; Y10T70/577; Y10T70/5783; Y10T70/5788; Y10T70/70; Y10T70/7153; Y10T70/7181; Y10T70/7198; Y10T70/7237; Y10T70/7311; Y10T70/7322; Y10T70/7328; Y10T70/7339
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
118 words
A push button combination lock comprising: a. a shaft, b. a plurality of sets of rotating members mounted on said shaft each set comprising (1) a ratchet wheel, (2) a slotted disc and (3) a toothed wheel, c. friction drive means between said shaft, said slotted disc and said toothed wheel, d. means between said ratchet wheel and said shaft whereby said shaft is positively driven by said ratchet wheel, e. push button means, said push button having a first tooth for engaging and driving said ratchet wheel and the second tooth for restraining said toothed wheel, f. lock releasing means whereby said lock will be released when all of said notched disc means are brought into alignment.
Claim 2
Dependent Claim
118 words
A push button combination lock comprising: a. a shaft, b. a plurality of sets of rotating members mounted on said shaft each set comprising (1) a ratchet wheel, (2) a slotted disc and (3) a toothed wheel, c. friction drive means between said shaft, said slotted disc and said toothed wheel, d. means between said ratchet wheel and said shaft whereby said shaft is positively driven by said ratchet wheel, e. push button means, said push button having a first tooth for engaging and driving said ratchet wheel and the second tooth for restraining said toothed wheel, f. lock releasing means whereby said lock will be released when all of said notched disc means are brought into alignment.
Claim 3
Dependent Claim
57 words
The structure of claim 1 whereiN said toothed wheel and said slotted disk are adapted to be coupled together in a first position and are free to rotate when in a second position whereby the combination of the lock can be changed by changing the relative rotative positions of the said toothed wheel and said slotted disk.
Claim 4
Dependent Claim
47 words
The structure of claim 1 having a bar with extending locking lugs thereon, said bar actuating the lock release mechanism, said slotted discs normally blocking said locking lugs, said slotted discs permitting said lugs to pass when the slots of all of said discs are in alignment.
Claim 5
Dependent Claim
43 words
The structure of claim 3 wherein said lock has an operating lever extending therefrom with a spring biased lost motion linkage to said bar whereby said operating lever can be moved without moving said bar when said bar is in a locked position.
Claim 6
Dependent Claim
58 words
The structure of claim 1 wherein said slotted disc and said toothed wheel are slideably mounted relative to each other and are locked when together and free to rotate relative to each other when in spaced relationship and having a reset mechanism with yokes thereon adapted to move the slotted disk toward and away from said toothed wheel.
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |