US3648000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coaxial switch
Assignee: ELECTRONIC IND ENGINEERING Inc
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Filing: 1970-08-26
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Granted: 1972-03-07
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Expires: 1990-08-26
Abstract
Abstract A switch adapted for as an A-B coaxial cable switch for CATV systems. The switch includes a pair of depressible pushbuttons, one for each cable. The buttons always move oppositely to each other. The crossbar extends diagonally within the switch and pivots at its center on a stationary slot in the switch housing. The ends of the crossbar pivot on slots in longitudinally reciprocable bars connected to the pushbuttons. A pair of coil springs are connected between the ends of the crossbar and the housing. Movable contact members carried by the bars make or break brushing contact with stationary spring contacts each time the pushbuttons are switched. When either button is depressed to move the crossbar past center or lateral position, the coil springs urge the crossbar toward the reverse position.
Inventors
- 👤 John R Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:50
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H13/72; H01H13/74; H01P; H01P1/00; H01P1/10; H01P1/12; H01P1/125
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
259 words
A switch comprising a housing, first and second pushbuttons mounted for alternating manual reciprocal movement between inward and outward positions with respect to said housing, an elongated bar attachment to each of said pushbuttons, said bars extending inwardly into said housing from said pushbuttons, a crossbar having its center pivotally mounted on a stationary part of said housing, the ends of said crossbar being pivotally connected to said bars, a contact member carried by the inner end of each of said bars, at least one substantially stationary contact adapted to be engaged by each of said contact members when the pushbutton to which it is attached is in inward position, said crossbar being movable upon the inward movement of either of said pushbuttons between two stable diagonal positions, in one oF which said first pushbutton is in inward position and its contact member is in engagement with its stationary contact and said second pushbutton is in outward position and its contact member is out of engagement with its stationary contact, and in the other of which said second pushbutton is in inward position and the engagement of said contact members are reversed, resilient means urging said crossbar toward the opposite diagonal position when either of said push buttons is pressed toward inward position and moves said crossbar past a lateral position with respect to its center pivot point, said resilient means comprising a coil spring extending between each end of said crossbar and an adjacent portion of said housing disposed transversely from the center pivot point of said crossbar.
Claim 2
Dependent Claim
259 words
A switch comprising a housing, first and second pushbuttons mounted for alternating manual reciprocal movement between inward and outward positions with respect to said housing, an elongated bar attachment to each of said pushbuttons, said bars extending inwardly into said housing from said pushbuttons, a crossbar having its center pivotally mounted on a stationary part of said housing, the ends of said crossbar being pivotally connected to said bars, a contact member carried by the inner end of each of said bars, at least one substantially stationary contact adapted to be engaged by each of said contact members when the pushbutton to which it is attached is in inward position, said crossbar being movable upon the inward movement of either of said pushbuttons between two stable diagonal positions, in one oF which said first pushbutton is in inward position and its contact member is in engagement with its stationary contact and said second pushbutton is in outward position and its contact member is out of engagement with its stationary contact, and in the other of which said second pushbutton is in inward position and the engagement of said contact members are reversed, resilient means urging said crossbar toward the opposite diagonal position when either of said push buttons is pressed toward inward position and moves said crossbar past a lateral position with respect to its center pivot point, said resilient means comprising a coil spring extending between each end of said crossbar and an adjacent portion of said housing disposed transversely from the center pivot point of said crossbar.
Claim 3
Dependent Claim
43 words
The structure described in claim 1, the center of said crossbar being pivotally mounted in a slot formed in said housing adjacent the center thereof and the ends of said crossbar being pivotally mounted in slots formed adjacent the midportion of said bars.
Claim 4
Dependent Claim
24 words
The structure described in claim 2, the opposite sides of each of said slots being V-shaped to form oppositely facing fulcrums for said crossbar.
Claim 5
Dependent Claim
59 words
The structure described in claim 3, each of said contact members comprising a leaf spring having a pair of laterally directed resilient wings, and a resilient stationary contact engageable with each of said wings, said wings and stationary contacts making resilient brushing engagement with each other when said pushbuttons and contact members are moved between inward and outward positions.
Claim 6
Dependent Claim
44 words
The structure described in claim 4, each of said stationary contacts comprising an elongated curved resilient member having a free end disposed within said housing, said free ends being movable both longitudinally and transversely upon engagement thereof with the wings of said contact members.
Claim 7
Dependent Claim
82 words
The structure described in claim 5, and a resistor mounted adjacent one of the stationary contacts engaged by each of said contact members, said resistor having one lead thereof disposed directly adjacent to said stationary contact, the resilience of said stationary contact normally urging it into engagement with said lead whenever its contact member is in outward position, said contact member being adapted to move said stationary contact out of engagement with said lead when said contact member is in inward position.
Claim 8
Dependent Claim
81 words
The structure described in claim 6, and means for connecting one of said stationary contacts engageable by each of said contact members with one of a pair of television cable connections and means for connecting the other of said stationary contacts engageable by each of said contact members with a television set, said pushbuttons being operable to selectively connect said television set to either of said cables, the unused cable being automatically connected through one of said resistors to electrical ground.
Claim 9
Dependent Claim
90 words
The structure described in claim 1, and means for connecting one of said stationary contacts engageable by each of said contact members with one of a pair of television cable connections, a balun transformer disposed in said housing, means connecting the other of said stationary contacts engageable by each of said contact members to the input of said transformer, and means for connecting the output of said transformer to a television set, said pushbuttons being operable to selectively connect said television set to either of said cables through said transformer.
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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |