US4087668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical contact
Assignee: Meidensha Corp
•
Filing: 1976-01-15
•
Granted: 1978-05-02
•
Expires: 1996-01-15
Abstract
Abstract An electrical contact with a fixed conductor and a movable conductor, comprises a plurality of plate springs, a plurality of contacts, the plate springs and the contacts being mounted into a single unit with an arrangement of those members in a substantial orthogonal relation to each other. The opposite ends of each of the plate springs being supported so as to provide an arrangement of contacts spaced at a fixed interval.
Inventors
- 👤 Ryoichi Nakanishi
- 👤 Masaru Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:24
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/12; H01H1/36; H01H1/38
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
160 words
An electrical contact arrangement comprising fixed and movable conductors, a housing, a plurality of contact elements, a leaf spring for each contact element secured to said housing means mounting said contact elements as a single unit in said housing, including an L-shaped supporting member for each contact element and including two legs, means fixing each said leaf spring on one of the legs of the respective said L-shaped supporting member and a pin pivotably coupling the respective said contact element with the second leg, and means supporting the L-shaped supporting members to provide an arrangement of contacts spaced at fixed intervals and including a member having a cross section with a groove mounted at one end of said fixed conductor, said supporting members being received in the groove such that said movable conductor is movable to be in contact with or away from one of the ends of the contact elements for turning the electrical contact arrangement on or off.
Claim 2
Dependent Claim
160 words
An electrical contact arrangement comprising fixed and movable conductors, a housing, a plurality of contact elements, a leaf spring for each contact element secured to said housing means mounting said contact elements as a single unit in said housing, including an L-shaped supporting member for each contact element and including two legs, means fixing each said leaf spring on one of the legs of the respective said L-shaped supporting member and a pin pivotably coupling the respective said contact element with the second leg, and means supporting the L-shaped supporting members to provide an arrangement of contacts spaced at fixed intervals and including a member having a cross section with a groove mounted at one end of said fixed conductor, said supporting members being received in the groove such that said movable conductor is movable to be in contact with or away from one of the ends of the contact elements for turning the electrical contact arrangement on or off.
Claim 3
Dependent Claim
38 words
An electrical contact arrangement according to claim 1, in which the supporting means comprises a rectangular plate having a plurality of projections at one of the longitudinal sides for electrical contact with a conductor of rectangular cross section.
Claim 4
Dependent Claim
19 words
An electrical contact arrangement according to claim 1, in which the supporting means is shiftable in the radial direction.
Claim 5
Dependent Claim
65 words
An electrical contact arrangement according to claim 1, in which the mounting means includes a third leg, each contact element being sandwiched between the second and third legs, one leg extending beyond said contact element and partially into said groove, the other leg being bent to face said one leg of the adjacent contact element to contact the same if the contact element becomes inclined.
Claim 6
Dependent Claim
23 words
An electrical contact arrangement according to claim 1, in which the supporting means has a ring-shape for an electrical conductor of circular cross-section.
Claim 7
Dependent Claim
27 words
An electrical contact arrangement according to claim 1, in which the supporting means comprises a pair of parallel plates and spacers maintaining said plates in spaced relation.
Claim 8
Dependent Claim
22 words
An electrical contact arrangement according to claim 1, comprising means loosely connecting the opposite ends of each plate spring to said housing.
References Cited (Backward Citations)
US2433115A
Cited
US2462285A
Cited
US2668892A
Cited
US2760034A
Cited
US3052786A
Cited
US3381105A
Cited
US3427419A
Cited
US3382340A
Cited
US3588413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-01 | 1981-10-31 | 1982-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-01 | 1985-10-31 | 1986-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-01 | 1989-10-31 | 1990-05-02 | $7700.00 | Window Closed / Lapsed |