E - Fixed Constructions – 05 – B
Patent
E - Fixed Constructions
05
B
E05B 47/00 (2006.01) H01H 9/22 (2006.01) H01H 9/28 (2006.01)
Patent
CA 2190191
An interlock device (76) is disclosed in connection with an electric circuit actuating mechanism (10). A latch (88) is rotatably fixed to the shaft (86) extending between a knob (80) and a master switch (78). The latch (88) includes an arcuate arm (94) which slides through an aperture (126) of a catch (120) when the closure (26) is in a closed position relative to a switch box (11). The catch (120) includes a cam (128) which holds a latch plate (104) in an unlatched position when the closure (26) is in its closed position, with the latch plate (104) in the unlatched position being in a non-interfering relation with the rotation of the latch (88), switch (78), and knob (80). When the closure (26) is in an open position, the cam (128) does not engage the latch plate (104) which moves under bias to a latch position. In its latch position, a notch (110) in the latch plate (104) receives an extension (96) formed on the latch (88) to prevent rotation of the latch (88), switch (78), and knob (80) from their off position.
Reiter John P.
Rogers Law Office
LandOfFree
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