Electricity: circuit makers and breakers – Multiple circuit control – Reciprocating contact
Patent
1989-06-19
1990-08-21
Scott, J. R.
Electricity: circuit makers and breakers
Multiple circuit control
Reciprocating contact
200243, 335133, H01H 120, H01H 1500, H01H 6702
Patent
active
049508466
ABSTRACT:
An electric relay is provided with pairs of stationary electrical contacts for connection to an electric circuit, movable bus bars positioned at axially spaced locations along an actuating shaft, and a mechanism for moving the shaft in an axial direction between first and second positions. Compressible biasing assemblies are positioned along the shaft between the conductive members and stops are positioned at the axially spaced locations to limit movement of the compressible biasing assemblies. The conductive members have an opening for receiving the stops and are capable of axial displacement with respect to the stops. Movement of the actuating shaft compresses each of the biasing assemblies between one of the stops and one of the conductive members thereby providing an axial force to press the conductive members against a pair of stationary contacts. When the shaft is moved to a second position, a stop is forced against the other end of the biasing assemblies such that a force is exerted on the movable conductive members in an opposite direction to force them into contact with a second set of stationary contacts.
REFERENCES:
patent: 985509 (1911-02-01), Carpenter
patent: 1569374 (1926-01-01), Johnston
patent: 1689075 (1928-10-01), Lehman
patent: 1844731 (1932-02-01), Whittingham
patent: 2266536 (1941-12-01), Cooper
patent: 2514913 (1950-07-01), Tyrner
patent: 2521973 (1950-09-01), Hamilton
patent: 2794093 (1957-05-01), Morschel
patent: 3230330 (1966-01-01), Bauer et al.
patent: 3258548 (1966-06-01), Cartier et al.
Lenart R. P.
Scott J. R.
Westinghouse Electric Corp.
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