US3555228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact spring synchronizing switch assembly
Assignee: Nippon Gakki Co Ltd
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Filing: 1969-04-10
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Granted: 1971-01-12
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Expires: 1989-04-10
Abstract
Abstract A synchronizing switch assembly involves a vertically movable operation member having a plurality of horizontally penetrating apertures, a plurality of stationary contact members corresponding to said apertures respectively and arranged parallel to the lengthwise direction of the operating member at a space, and a plurality of movable contact members of resilient material horizontally extending to the upper sides of the stationary contact members. Said movable contact members are respectively provided with upper and lower horizontally extending sections passing through the corresponding aperture to be pressed to the inner wall of said aperture by the elasticity prevailing therebetween.
Inventors
- 👤 Junji Ohno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:55
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/12; H01H1/14; H01H1/24; H01H1/26; H01H1/28
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
222 words
A synchronizing switch assembly comprising a base, an operating member having a plurality of apertures formed perpendicular to the direction of movement of said operating member, means for urging said operating member in one of its moving directions, a plurality of stationary contact members disposed on said base such that each of said plurality of stationary contact members faces each of said corresponding apertures at a space and a plurality of movable contact members corresponding in number to said plurality of stationary contact members and passing through the corresponding apertures respectively, each of said movable contact members having a contact area acting in engagement with the corresponding stationary contact member when said operating member is moved against the resistance of said urging means, said switch assembly being characterized in that each of said movable contact members includes a first section involving said contact area and a second section, and has at least one portion pressed to the inner wall of the corresponding aperture by the elasticity prevailing between both sections, at least one of said sections being elastically bendable in the direction of movement of the operating member and interconnected with the other section at a certain point in such a manner that the specified length of the first section defined between said point and contact area is larger than the space.
Claim 2
Dependent Claim
222 words
A synchronizing switch assembly comprising a base, an operating member having a plurality of apertures formed perpendicular to the direction of movement of said operating member, means for urging said operating member in one of its moving directions, a plurality of stationary contact members disposed on said base such that each of said plurality of stationary contact members faces each of said corresponding apertures at a space and a plurality of movable contact members corresponding in number to said plurality of stationary contact members and passing through the corresponding apertures respectively, each of said movable contact members having a contact area acting in engagement with the corresponding stationary contact member when said operating member is moved against the resistance of said urging means, said switch assembly being characterized in that each of said movable contact members includes a first section involving said contact area and a second section, and has at least one portion pressed to the inner wall of the corresponding aperture by the elasticity prevailing between both sections, at least one of said sections being elastically bendable in the direction of movement of the operating member and interconnected with the other section at a certain point in such a manner that the specified length of the first section defined between said point and contact area is larger than the space.
Claim 3
Dependent Claim
24 words
A synchronizing switch assembly claimed in claim 1 in which the sections haVe portions pressed to the opposite inner walls of the corresponding aperture.
Claim 4
Dependent Claim
28 words
A synchronizing switch assembly claimed in claim 1 in which the sections are interconnected with each other by the medium of a turning portion involving said interconnected point.
Claim 5
Dependent Claim
31 words
A synchronizing switch assembly claimed in claim 2 in which said first section rearwardly extends to, and is connected at the rear end, with a supporting member attached to said base.
Claim 6
Dependent Claim
56 words
A synchronizing switch assembly claimed in claim 1 in which said first section has a portion pressed to the lower side wall of the corresponding aperture by torsional prestress applied to a turning portion involving said interconnected point, and said second section is connected at the rear end with a supporting member attached to said base.
Claim 7
Dependent Claim
26 words
A synchronizing switch assembly claimed in claim 1 in which said apertures are arranged in one row in the direction of movement of said operating member.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |