US4123641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pushbutton switch
Assignee: Alps Alpine Co Ltd
•
Filing: 1977-02-16
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Granted: 1978-10-31
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Expires: 1997-02-16
Abstract
Abstract A pushbutton switch is disclosed which includes a pushbutton formed of a synthetic resin to have a recess, and a lever having an attachment portion for fitting into the recess. The lever is formed of a synthetic resin relatively harder than the material of the pushbutton and relatively small in creep contraction rate. The attachment portion has projections thrusting into the wall of the recess so as to prevent the lever from coming out of the recess.
Inventors
- 👤 Taneo Murata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:58
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/02; H01H13/12; H01H13/14; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7075; Y10T403/7077
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
In a pushbutton switch including a pushbutton formed of a synthetic resin material and having a recess, and a lever having an attachment portion for fitting into said recess, the improvement comprising: said recess being substantially cross-shaped, said attachment portion being substantially crossshaped in cross section and complementary with said recess, and integral projections extending outwardly from the inner corners of said attachment portion to thrust into the wall of said recess, said lever being formed of a synthetic resin material relatively harder and relatively smaller in creep contraction rate than the material of said pushbutton, whereby over extended periods of use, said projections will be continually thrust into the wall of said recess.
Claim 2
Dependent Claim
114 words
In a pushbutton switch including a pushbutton formed of a synthetic resin material and having a recess, and a lever having an attachment portion for fitting into said recess, the improvement comprising: said recess being substantially cross-shaped, said attachment portion being substantially crossshaped in cross section and complementary with said recess, and integral projections extending outwardly from the inner corners of said attachment portion to thrust into the wall of said recess, said lever being formed of a synthetic resin material relatively harder and relatively smaller in creep contraction rate than the material of said pushbutton, whereby over extended periods of use, said projections will be continually thrust into the wall of said recess.
Claim 3
Dependent Claim
23 words
A pushbutton switch as set forth in claim 1, wherein said projections each has a pointed tip to thrust into said recess wall.
Claim 4
Dependent Claim
22 words
A pushbutton switch as set forth in claim 1, wherein said projections each has a ridgeline to thrust into said recess wall.
References Cited (Backward Citations)
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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) | 1981-10-30 | 1982-05-01 | 1982-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-30 | 1986-05-01 | 1986-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-30 | 1990-05-01 | 1990-10-31 | $7700.00 | Window Closed / Lapsed |