US3746359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric switches
Assignee: ZF International UK Ltd
•
Filing: 1972-03-14
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Granted: 1973-07-17
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Expires: 1992-03-14
Abstract
Abstract An electric switch has an actuating mechanism movable to any one of three positions. The mechanism engages a conductive arm in the form of a metal strip having downturned flanges which provide pivots about which the arm is moved by the actuating mechanism to interconnect pairs of contacts within the switch.
Inventors
- 👤 K Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:01
CPC Classifications
H; H01; H01H; H01H23/00; H01H23/02; H01H23/12; H01H23/16; H01H23/168
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
190 words
An electric switch comprising a body, a switch actuating mechanism selectively movable within the body to any of three positions, a contact arm engaging said mechanism and a pair of contacts on the arm respectively engageable by opposite ends of said arm, said arm having integral projections intermediate its ends with said projections being spaced in the direction of the longitudinal axis of the arm and providing a pair of pivots for said arm on said body during movements of said arm to engage said pair of contacts respectively, said integral projections comprising two pairs of flanges with the flanges in each pair being on opposite sides of said arm, said arm including a transverse depression intermediate the pairs of flanges, said switch actuating mechanism being engageable in use in said depression, said arm also including a pair of further projections extending transversely of the remainder of said arm on opposite sides thereof and being substantially aligned with said depression, and wherein said body includes pairs of projections between which said pair of further projections of said contact arm respectively extend, whereby longitudinal movement of said contact arm is prevented.
Claim 2
Dependent Claim
190 words
An electric switch comprising a body, a switch actuating mechanism selectively movable within the body to any of three positions, a contact arm engaging said mechanism and a pair of contacts on the arm respectively engageable by opposite ends of said arm, said arm having integral projections intermediate its ends with said projections being spaced in the direction of the longitudinal axis of the arm and providing a pair of pivots for said arm on said body during movements of said arm to engage said pair of contacts respectively, said integral projections comprising two pairs of flanges with the flanges in each pair being on opposite sides of said arm, said arm including a transverse depression intermediate the pairs of flanges, said switch actuating mechanism being engageable in use in said depression, said arm also including a pair of further projections extending transversely of the remainder of said arm on opposite sides thereof and being substantially aligned with said depression, and wherein said body includes pairs of projections between which said pair of further projections of said contact arm respectively extend, whereby longitudinal movement of said contact arm is prevented.
Claim 3
Dependent Claim
20 words
A switch as claimed in claim 1 in which said flanges extend substantially perpendicularly of the remainder of said arm.
Claim 4
Dependent Claim
22 words
A switch as claimed in claim 2 in which said flanges are of triangular form and define edges which comprise said pivots.
Claim 5
Dependent Claim
19 words
A switch as claimed in claim 2 in which said flanges have radiused outer ends which comprise said pivots.
Claim 6
Dependent Claim
44 words
A switch as claimed in claim 1 which includes a leaf spring whose ends are engaged with said arm adjacent the respective ends thereof, said leaf spring having a transverse depression intermediate its ends, and said depression being engageable by said switch actuating mechanism.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |