Patent US3717735A successfully refreshed from Google Patents.
US3717735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flex sensitive normally closed ribbon switch
Assignee: UNITED STATES OLYMPIC COMMITTEE
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Filing: 1971-09-14
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Granted: 1973-02-20
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Expires: 1991-09-14
Abstract
Abstract A normally closed ribbon switch has two conductor strips each having transverse curvature. The strips are mounted to touch on their convex sides. The conductor strips have a pair of insulation strips mounted along and between the outer edges of the conductor strips whereby when the ribbon switch is flexed the strips lose their transverse curvature and the electrical contact between the conductor strips opens.
Inventors
- 👤 R Koenig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:33
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/10; H01H; H01H3/00; H01H3/02; H01H3/14; H01H3/141; E; E05; E05F; E05F15/00; E05F15/40; E05F15/42; E05F15/44; E05F2015/447; H01H2003/146
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
97 words
A normally closed ribbon switch comprising, two conductive strips of springy material each having transverse curvature, said strips being mounted to touch on their convex sides, and a pair of insulation strips mounted between the outer edges of said conductor strips, spaced paper thin insulator sheets placed between and separating the convex areas of said strips, said sheets being spaced sufficiently so that contact is normally made between the conductive strips in the contacting gap portion between said sheets, whereby when said ribbon switch is flexed said conductive strips lose their transverse curvature and the switch opens.
Claim 2
Dependent Claim
97 words
A normally closed ribbon switch comprising, two conductive strips of springy material each having transverse curvature, said strips being mounted to touch on their convex sides, and a pair of insulation strips mounted between the outer edges of said conductor strips, spaced paper thin insulator sheets placed between and separating the convex areas of said strips, said sheets being spaced sufficiently so that contact is normally made between the conductive strips in the contacting gap portion between said sheets, whereby when said ribbon switch is flexed said conductive strips lose their transverse curvature and the switch opens.
Claim 3
Dependent Claim
97 words
A normally closed ribbon switch comprising, two conductive strips of springy material each having transverse curvature, said strips being mounted to touch on their convex sides, and a pair of insulation strips mounted between the outer edges of said conductor strips, spaced paper thin insulator sheets placed between and separating the convex areas of said strips, said sheets being spaced sufficiently so that contact is normally made between the conductive strips in the contacting gap portion between said sheets, whereby when said ribbon switch is flexed said conductive strips lose their transverse curvature and the switch opens.
Claim 4
Dependent Claim
97 words
A normally closed ribbon switch comprising, two conductive strips of springy material each having transverse curvature, said strips being mounted to touch on their convex sides, and a pair of insulation strips mounted between the outer edges of said conductor strips, spaced paper thin insulator sheets placed between and separating the convex areas of said strips, said sheets being spaced sufficiently so that contact is normally made between the conductive strips in the contacting gap portion between said sheets, whereby when said ribbon switch is flexed said conductive strips lose their transverse curvature and the switch opens.
References Cited (Backward Citations)
US3553404A
Cited
US3619530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |