Operator mechanism having reduced handle throw and improved hand

Details Operator mechanism having reduced handle throw and improved hand Operator mechanism having reduced handle throw and improved hand

1987-06-26

1988-07-26

Scott, J. R.

Electricity: circuit makers and breakers

Interlocking

Between plural switches

2003021, 200330, H01H 920

Patent

active

047602201

ABSTRACT:
A handle (52) is guided for linear sliding movement within a housing (38) mounted to the front of a removable control unit (16) and has a hinged connection (52c,64) with the forward end of a drive lever (60) which is pivotally mounted (62) within the control unit and linked (68,72) to circuit interrupting apparatus (26) mounted in the control unit for reducing the handle throw necessary to operate the apparatus. A slide bar (84) is spring biased (86) to an extended position with the operator in the ON position to engage a fixed structure (92) of the cabinet to prevent withdrawal or insertion of the control unit when the apparatus is in an ON condition. The slide bar is driven to a retracted position by the handle (52d,88) when moved to the OFF position. A handle locking plate (94) is lockable in a position of interference with the handle to prevent movement from OFF to ON positions, and has a breakaway tab (94f) removable to permit locking the handle against movement from ON to OFF. A second breakaway tab (94g) on the locking plate is removable to accommodate different OFF positions of the handle for different types of circuit interrupting apparatus.

REFERENCES:
patent: 2956133 (1960-10-01), Middendorf
patent: 3272953 (1966-09-01), Tillson
patent: 3301972 (1967-01-01), Brumfield
patent: 3311720 (1967-03-01), Johnson
patent: 3365555 (1968-01-01), Ponsy
patent: 3384722 (1968-05-01), Hanke et al.
patent: 3978304 (1976-08-01), Salvati et al.
patent: 4027361 (1977-06-01), Yoneya
patent: 4034169 (1977-07-01), Armstrong et al.
patent: 4074091 (1978-02-01), Bischof et al.
Two Page Brochure, "Engineer's Guide for Sealing System Design", Schlegel Corp., 1986.

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