US4417113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structure of push-button device
Assignee: Citizen Watch Co Ltd
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Filing: 1981-02-05
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Granted: 1983-11-22
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Expires: 2001-02-05
Abstract
Abstract In a push-button device having a waterproofing O-ring disposed between the inner wall of a pipe and the shaft portion of a button body, the structure of said push-button device characterized in that a non-metallic, resilient sleeve for preventing the invasion of dust and for restoring the push-button is disposed in a clearance formed between the head portion of the button body and a stepped portion provided on said inner wall of said pipe.
Inventors
- 👤 Motoyuki Saito
- 👤 Satoru Fukutome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:54
CPC Classifications
G; G04; G04B; G04B37/00; G04B37/08; G04B37/10; G04B37/106; G04C; G04C3/00; G04C3/001; G05; G05G; G05G1/00; G05G1/02; H; H01; H01H; H01H13/00; H01H13/02; H01H13/04; H01H13/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
131 words
A push-button device comprising: a pipe having a first and a second shoulder; a button body having a head portion and a shaft portion extending from said head portion, said shaft portion being slidably received in said pipe; a waterproofing sealing ring disposed between an inner wall of said pipe and the shaft portion of said button body; and a non-metallic, resilient sleeve disposed between the head portion of said button body and the first shoulder of said pipe, said sleeve serving as means for restoring said button body to its original position and serving as means for preventing entry of dust toward said sealing ring, said second shoulder being engaged by said head portion when the button body is depressed thereby limiting the extent of depression of said resilient sleeve.
Claim 2
Dependent Claim
131 words
A push-button device comprising: a pipe having a first and a second shoulder; a button body having a head portion and a shaft portion extending from said head portion, said shaft portion being slidably received in said pipe; a waterproofing sealing ring disposed between an inner wall of said pipe and the shaft portion of said button body; and a non-metallic, resilient sleeve disposed between the head portion of said button body and the first shoulder of said pipe, said sleeve serving as means for restoring said button body to its original position and serving as means for preventing entry of dust toward said sealing ring, said second shoulder being engaged by said head portion when the button body is depressed thereby limiting the extent of depression of said resilient sleeve.
Claim 3
Dependent Claim
20 words
A push-button device according to claim 1, wherein said resilient sleeve has a central portion formed with a bulging configuration.
Claim 4
Dependent Claim
19 words
A push-button device according to claim 1, wherein said resilient sleeve has an inner wall formed with a concavity.
Claim 5
Dependent Claim
22 words
A push-button device according to claim 1, further comprising a washer disposed between the shoulder of said pipe and said resilient sleeve.
Claim 6
Dependent Claim
134 words
A push-button device comprising: a pipe having a bore and shoulder; a button body having a head portion and a shaft portion extending from said head portion, said shaft portion being slidably received in said pipe; a waterproofing sealing ring disposed between an inner wall of said pipe and the shaft portion of said button body; and a non-metallic, resilient sleeve disposed in the bore of said pipe between the head portion of said button body and the shoulder of said pipe, said sleeve serving as means for restoring said button body to its original position and serving as means for preventing entry of dust toward said sealing ring, and said sleeve having its outer diameter smaller than the bore of said pipe to enable buckling effect at a central portion of said sleeve.
Claim 7
Dependent Claim
134 words
A push-button device comprising: a pipe having a bore and shoulder; a button body having a head portion and a shaft portion extending from said head portion, said shaft portion being slidably received in said pipe; a waterproofing sealing ring disposed between an inner wall of said pipe and the shaft portion of said button body; and a non-metallic, resilient sleeve disposed in the bore of said pipe between the head portion of said button body and the shoulder of said pipe, said sleeve serving as means for restoring said button body to its original position and serving as means for preventing entry of dust toward said sealing ring, and said sleeve having its outer diameter smaller than the bore of said pipe to enable buckling effect at a central portion of said sleeve.
References Cited (Backward Citations)
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Cited
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Cited
US4031348A
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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) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |