Patent US4190751A successfully refreshed from Google Patents.
US4190751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical contact switch with an extremely small actuating movement
Assignee: Individual
•
Filing: 1976-10-21
•
Granted: 1980-02-26
•
Expires: 1996-10-21
Abstract
Abstract A leaf spring contact with endwise applied actuation movement is provided with a leaf spring body having two ends, at least one contactor located upon the center of said leaf spring body and two inflexible and laterally immovable anchors, each fastened to a different end of said leaf spring body. Means are connected to at least one of said anchors for directing a compressive force through said one anchor towards the center of said leaf spring body and for, consequently, inducing a transgression of bending stress of said leaf spring body which then suddenly bends in a whip-like fashion resulting in switch motion of said leaf spring body.
Inventors
- 👤 Jac M. Roth
- 👤 Veronika Roth nee Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:36
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/66; H01R13/70; H01R13/703; H01R13/7036; H01H; H01H5/00; H01H5/04; H01H5/18; H01H5/20; H01H50/00; H01H50/54; H01H3/00; H01H3/32; H01H3/46; H01H2003/463; H01H57/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
129 words
A movable leaf spring contact engageable with a fixed contact for switching the same, said leaf spring comprising a normally straight leaf spring body having two end portions and an intermediate portion therebetween; two rigid and laterally immovable anchors each rigidly embracing a different end portion of said spring so as to prevent all lateral movements of said end portions; and means connected to at least one of said anchors for directing through said one anchor and the respective end portion fastened thereto a compressive force which acts lengthwise of said spring body and towards the center of the same and for inducing a consequent transgression of bending stress of said intermediate portion of said leaf spring body which intermediate portion then suddenly bends and engages a fixed contact.
Claim 2
Dependent Claim
129 words
A movable leaf spring contact engageable with a fixed contact for switching the same, said leaf spring comprising a normally straight leaf spring body having two end portions and an intermediate portion therebetween; two rigid and laterally immovable anchors each rigidly embracing a different end portion of said spring so as to prevent all lateral movements of said end portions; and means connected to at least one of said anchors for directing through said one anchor and the respective end portion fastened thereto a compressive force which acts lengthwise of said spring body and towards the center of the same and for inducing a consequent transgression of bending stress of said intermediate portion of said leaf spring body which intermediate portion then suddenly bends and engages a fixed contact.
Claim 3
Dependent Claim
32 words
A leaf spring contact as defined in claim 1, wherein said directing means is a diaphragm through which the compressive force is applied under absolute lateral rigidity and without exterior friction points.
Claim 4
Dependent Claim
27 words
A spring as defined in claim 1 and further comprising at least one contactor located at the middle of said intermediate portion of the leaf spring body.
Claim 5
Dependent Claim
20 words
A leaf spring contact as defined in claim 3, wherein said contactor is directly mounted upon said leaf spring body.
Claim 6
Dependent Claim
24 words
A leaf spring as defined in claim 1, wherein at least one of said laterally immovable anchors is concentrically fixed within a surrounding housing.
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) | 1983-02-25 | 1983-08-27 | 1984-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-25 | 1987-08-27 | 1988-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-25 | 1991-08-27 | 1992-02-26 | $7700.00 | Window Closed / Lapsed |