US3773996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pushbutton switch with coil spring contacts
Assignee: CONTROLS RES CORP
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Filing: 1971-05-20
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Granted: 1973-11-20
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Expires: 1991-05-20
Abstract
Abstract An electrical switch in which contacts are comprised of portions of two concentric, current conductive springs. One of the springs has an open end and the other of the springs has an end that is closed by the presence of a conductive portion extending thereacross. Linear movement of one spring with respect to the other causes the edge portions of the open ended spring to engage the conductive portions at radially spaced apart positions on the other spring to provide at least two conductive contact areas. A mounted assembly may provide a base for holding the springs in a predetermined initial position and relationship and a mounting for an actuator for imparting motion to at least one of the springs.
Inventors
- 👤 K Sharf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:13
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/12; H01H1/14; H01H1/24; H01H1/242
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
166 words
In apparatus of the class above described, the combination comprising; a. an elongated hollow housing; b. first spring means having one end mounted on one end of said housing, and the other end disposed intermediate the ends of said housing; c. second spring means having one end mounted on said one end of said housing, the other end disposed in proximity to the other end of said housing; d. one of said spring means including a prtion extending radially across the other of said spring means for less than the entire periphery of said one of said spring means intermediate the ends of said one of said spring means, whereby relative axial movement therebetween causes conductive engagement of said portion on said one of said spring means with the other of said spring means; and e. actuating means operable to axially displace at least one of said spring means whereby conductive engagement intermediate said radially extending portion and the other of the spring means is effected.
Claim 2
Dependent Claim
166 words
In apparatus of the class above described, the combination comprising; a. an elongated hollow housing; b. first spring means having one end mounted on one end of said housing, and the other end disposed intermediate the ends of said housing; c. second spring means having one end mounted on said one end of said housing, the other end disposed in proximity to the other end of said housing; d. one of said spring means including a prtion extending radially across the other of said spring means for less than the entire periphery of said one of said spring means intermediate the ends of said one of said spring means, whereby relative axial movement therebetween causes conductive engagement of said portion on said one of said spring means with the other of said spring means; and e. actuating means operable to axially displace at least one of said spring means whereby conductive engagement intermediate said radially extending portion and the other of the spring means is effected.
Claim 3
Dependent Claim
159 words
In apparatus of the class above described, the combination comprising; a. an elongated hollow housing; b. first spring means having one end mounted on one end of said housing, and the other end disposed intermediate the ends of said housing; c. second spring means having one end mounted on said one end of said housing; the other end disposed in proximity to the other end of said housing and of larger diameter than said first spring means; d. said first spring means including a portion extending radially across said second spring means for less than the entire periphery of said first spring means whereby relative axial movement therebetween causes conductive engagement of said portion on said first spring means with said second spring means; and e. actuating means operative to axially displace at least one of said spring means whereby conductive engagement intermediate said radially extending portion on said first spring means and said second spring means is effected.
Claim 4
Dependent Claim
159 words
In apparatus of the class above described, the combination comprising; a. an elongated hollow housing; b. first spring means having one end mounted on one end of said housing, and the other end disposed intermediate the ends of said housing; c. second spring means having one end mounted on said one end of said housing; the other end disposed in proximity to the other end of said housing and of larger diameter than said first spring means; d. said first spring means including a portion extending radially across said second spring means for less than the entire periphery of said first spring means whereby relative axial movement therebetween causes conductive engagement of said portion on said first spring means with said second spring means; and e. actuating means operative to axially displace at least one of said spring means whereby conductive engagement intermediate said radially extending portion on said first spring means and said second spring means is effected.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |