Patent US3592027A successfully refreshed from Google Patents.
US3592027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination lock
Assignee: Wako Kinzokie KK
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Filing: 1969-09-22
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Granted: 1971-07-13
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Expires: 1989-09-22
Abstract
Abstract A combination lock includes a plurality of dial rings each mounted on and engageable with engaging rings positioned about a shaft and the engaging rings being rotatably movable about the shaft for fastening or unfastening a lock bail positioned in the shaft. In its unfastened position, the lock is arranged to afford the release of the interengagement of the dial rings and engaging rings for separately rotating the dial rings for resetting the combination for opening the lock.
Inventors
- 👤 Shigeru Wako
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:25
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; Y10T70/487; Y10T70/491; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5246; Y10T70/5296; Y10T70/5345; Y10T70/70; Y10T70/7153; Y10T70/7181; Y10T70/7198; Y10T70/7237; Y10T70/726; Y10T70/7305; Y10T70/7322
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
393 words
A combination lock in which the combination can be changed without disassembling the lock, comprising a shaft having a collar formed at one end with a hole formed in said collar, engaging rings loosely rotatably fitted on said shaft, a dial ring mounted on and exteriorly of each of said engaging rings and a circular collar fixed to and extending inwardly from each said engaging ring; each pair of one said dial ring and one said engaging ring interengaged for rotation as a unit by notched uneven parts thereon, a case having a central hole therein, a fitting protrusion located on the other end of said shaft from said collar, and said protrusion positioned with the central hole in said case, said dial rings positioned in sliding closely contacting engagement about said shaft between said collar thereon and said case, an inverted U-shaped lock bail having a long arm and a short arm arranged with its long arm extending through said collar the inside of said engaging rings and into said case, said long arm of said bail having spaced notches on one side thereof for engagement with said circular collars of said engaging rings in the locked condition of said lock, each of said circular collars on said engaging rings having a notch arranged to be rotated into alignment with said long arm of said bail, said bail having a locked position with said short arm located in the hole in said collar on said shaft and said long arm restrained from axial displacement by the engagement of said circular collar on said engaging rings with said notches in said long arm and an unlocked position with said long arm aligned in the notches of said circular collars so that said bail can be displaced axially within said shaft and said short arm angularly displaced about said long arm from alignment with the hole in the collar of said shaft and in the unlocked position said shaft is displaceable in the axial direction of said long arm a distance just sufficient for disengaging said dial rings from said engaging rings so that said dial rings are freely rotatable while said engaging rings are secured against rotation by said long arm and in this position said shaft arm is incapable of displacement into alignment with the hole in the collar of said shaft.
Claim 2
Dependent Claim
393 words
A combination lock in which the combination can be changed without disassembling the lock, comprising a shaft having a collar formed at one end with a hole formed in said collar, engaging rings loosely rotatably fitted on said shaft, a dial ring mounted on and exteriorly of each of said engaging rings and a circular collar fixed to and extending inwardly from each said engaging ring; each pair of one said dial ring and one said engaging ring interengaged for rotation as a unit by notched uneven parts thereon, a case having a central hole therein, a fitting protrusion located on the other end of said shaft from said collar, and said protrusion positioned with the central hole in said case, said dial rings positioned in sliding closely contacting engagement about said shaft between said collar thereon and said case, an inverted U-shaped lock bail having a long arm and a short arm arranged with its long arm extending through said collar the inside of said engaging rings and into said case, said long arm of said bail having spaced notches on one side thereof for engagement with said circular collars of said engaging rings in the locked condition of said lock, each of said circular collars on said engaging rings having a notch arranged to be rotated into alignment with said long arm of said bail, said bail having a locked position with said short arm located in the hole in said collar on said shaft and said long arm restrained from axial displacement by the engagement of said circular collar on said engaging rings with said notches in said long arm and an unlocked position with said long arm aligned in the notches of said circular collars so that said bail can be displaced axially within said shaft and said short arm angularly displaced about said long arm from alignment with the hole in the collar of said shaft and in the unlocked position said shaft is displaceable in the axial direction of said long arm a distance just sufficient for disengaging said dial rings from said engaging rings so that said dial rings are freely rotatable while said engaging rings are secured against rotation by said long arm and in this position said shaft arm is incapable of displacement into alignment with the hole in the collar of said shaft.
Claim 3
Dependent Claim
126 words
A combination lock, as set forth in claim 1, wherein said fitting protrusion having a hole therein extending perpendicularly to the axial direction of said long arm within said shaft, a spring positioned within the hole in said fitting protrusion, a pin inserted into said hole and biased outwardly therefrom by said spring, a plate positioned on the surface of said case adjacent said dial rings mounted above said shaft, said case having an engaging hole formed therein arranged for alignment with The hole in said fitting protrusion, and when in the unlocked position said shaft is displaceable in the axial direction of said long arm said pin biased outwardly from the hole in said fitting protrusion abuts the surface of said plate on said case.
Claim 4
Dependent Claim
54 words
A combination lock, as set forth in claim 2, wherein said long arm arranged to be displaced axially through said case out of alignment with the hole in said fitting protrusion and the engaging hole in said case, and means on the end of said long arm for preventing its displacement from said case.
Claim 5
Dependent Claim
49 words
A combination lock, as set forth in claim 3, wherein a slender pin insertable into the engaging hole in said case for passage therethrough into engagement with said engaging pin in the hole in said fitting protrusion for displacing said engaging pin against the biasing action of said spring.
Claim 6
Dependent Claim
134 words
A combination lock, as set forth in claim 2, wherein said long arm of said lock bail having a through hole therein extending transversely of the axial direction of said long arm and spaced axially from the hole in said fitting protrusion containing said engaging pin, in the unlocked position, said long arm being axially displaceable within said case in the direction away from said collar on said shaft for aligning the through hole in said long arm with the hole in said fitting protrusion and the engaging hole in said case, and a slender pin arranged to be inserted through the engaging hole in said case the through hole in said long arm for displacing said engaging pin within the hole in said fitting protrusion against the biasing action of said spring therein.
Claim 7
Dependent Claim
122 words
A combination lock, as set forth in claim 1, wherein a flangelike expansion part formed on the end of said long arm located within said case, in the unlocked position when said shaft is displaced in the axial direction of said long arm a distance just sufficient for disengaging said dial rings from said engaging rings said long arm is displaceable in the same direction but is retained from continued displacement through said case and shaft by said case, the extent of axial displacement of said long arm being limited so that in such position with said shaft displaced axially said short arm of said lock bail can not be pivoted into alignment with the hole in said collar of said 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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |