Door lock device with safety switch

Details Door lock device with safety switch Door lock device with safety switch

2011-07-26

2011-07-26

Leon, Edwin A. (Department: 2833)

Electricity: circuit makers and breakers

Switch activation inhibitor

Removable actuator

C200S334000

Reexamination Certificate

active

07985932

ABSTRACT:
A door lock apparatus with safety switch capable of locking a door. A coupling member is pivotally moved about a pivotal shaft by a closing operation by a rotary handle, thereby bringing an engaging portion thereof into engagement with a fixing member, so that a protective door is inhibited from moving in two directions of arrows X, Y including a moving direction of the door. Whether the door is of a slide or pivot type, the door is assuredly locked in a closed state because the door is inhibited from moving in the two directions including the moving direction thereof. If an operation mistake is made to open the door, the force for opening the door is not directly applied to the switch body or the actuator. A safety switch may achieve an increase in durability.

REFERENCES:
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patent: 4764648 (1988-08-01), Resh
patent: 6310305 (2001-10-01), Kamino et al.
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patent: 2002-201840 (2002-07-01), None
patent: 2002-309811 (2002-10-01), None
patent: 2004-353849 (2004-12-01), None

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