Patent US3978303A successfully refreshed from Google Patents.
US3978303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leaf spring switch
Assignee: Mik Electronic Corp
•
Filing: 1974-10-24
•
Granted: 1976-08-31
•
Expires: 1994-10-24
Abstract
Abstract A switch comprising a pair of leaf springs having contacts and terminals at the both ends thereof, a base member supporting the leaf springs in a cantilever fashion in superposed relationship and a fulcrum member supporting one of the leaf springs so as to make the leaf spring moveable downwardly by pushing the end of the leaf spring.
Inventors
- 👤 Muneyoshi Miyata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:46
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/12; H01H1/14; H01H1/24; H01H1/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
219 words
A switch comprising an insulating base member, a first leaf spring having a lug on one longitudinal end, said lug being adapted to be engaged by an actuator, said first leaf spring also having a first contact on said one longitudinal end, said first leaf spring further having a terminal on the other longitudinal end, a second leaf spring having a second contact on one longitudinal end and a terminal at the other longitudinal end, said first and second leaf springs being embedded in said base member in cantilever fashion in a spaced and generally parallel relationship such that said first and second contacts oppose one another in spaced relationship, said lug being adapted to be engaged by said actuator to move said first leaf spring toward said second leaf spring to thereby move said first contact into engagement with said second contact, and an insulating fulcrum member secured to said first leaf spring at a location intermediate said first contact and said base member, said insulating fulcrum member projecting towards said second leaf spring and engaging said second leaf spring at a location intermediate said second contact and said base means to thereby maintain a constant distance between said intermediate locations of said first and second leaf springs, thereby increasing the restitution power of said first leaf spring.
Claim 2
Dependent Claim
219 words
A switch comprising an insulating base member, a first leaf spring having a lug on one longitudinal end, said lug being adapted to be engaged by an actuator, said first leaf spring also having a first contact on said one longitudinal end, said first leaf spring further having a terminal on the other longitudinal end, a second leaf spring having a second contact on one longitudinal end and a terminal at the other longitudinal end, said first and second leaf springs being embedded in said base member in cantilever fashion in a spaced and generally parallel relationship such that said first and second contacts oppose one another in spaced relationship, said lug being adapted to be engaged by said actuator to move said first leaf spring toward said second leaf spring to thereby move said first contact into engagement with said second contact, and an insulating fulcrum member secured to said first leaf spring at a location intermediate said first contact and said base member, said insulating fulcrum member projecting towards said second leaf spring and engaging said second leaf spring at a location intermediate said second contact and said base means to thereby maintain a constant distance between said intermediate locations of said first and second leaf springs, thereby increasing the restitution power of said first leaf spring.
Claim 3
Dependent Claim
242 words
A switch comprising an insulating base member, a first leaf spring having a lug on one longitudinal end, said lug being adapted to be engaged by an actuator, said first leaf spring also having a first contact on said one longitudinal end, said first leaf spring further having a terminal on the other longitudinal end, a second leaf spring having a second contact on one longitudinal end and a terminal at the other longitudinal end, said first and second leaf springs being embedded in said base member in cantilever fashion in a spaced and generally parallel relationship such that said first and second contacts oppose one another in spaced relationship, said lug being adapted to be engaged by said actuator to move said first leaf spring toward said second leaf spring to thereby move said first contact into engagement with said second contact, said base means having an integral insulating fulcrum member, said insulating fulcrum member having a first portion projecting laterally from said base member and extending generally parallel to said first and second leaf springs, said insulating fulcrum member having a second portion extending generally perpendicular from said first portion, said second portion projecting toward said first leaf spring and engaging said first leaf spring at a location intermediate said first contact and said base member to thereby provide a fulcrum for said first leaf spring at said intermediate location, thereby increasing the restitution power of said first leaf spring.
Claim 4
Dependent Claim
242 words
A switch comprising an insulating base member, a first leaf spring having a lug on one longitudinal end, said lug being adapted to be engaged by an actuator, said first leaf spring also having a first contact on said one longitudinal end, said first leaf spring further having a terminal on the other longitudinal end, a second leaf spring having a second contact on one longitudinal end and a terminal at the other longitudinal end, said first and second leaf springs being embedded in said base member in cantilever fashion in a spaced and generally parallel relationship such that said first and second contacts oppose one another in spaced relationship, said lug being adapted to be engaged by said actuator to move said first leaf spring toward said second leaf spring to thereby move said first contact into engagement with said second contact, said base means having an integral insulating fulcrum member, said insulating fulcrum member having a first portion projecting laterally from said base member and extending generally parallel to said first and second leaf springs, said insulating fulcrum member having a second portion extending generally perpendicular from said first portion, said second portion projecting toward said first leaf spring and engaging said first leaf spring at a location intermediate said first contact and said base member to thereby provide a fulcrum for said first leaf spring at said intermediate location, thereby increasing the restitution power of said first leaf spring.
References Cited (Backward Citations)
US3126466A
Cited
US3099735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |