Switch with device for preventing erroneous operation

Details Switch with device for preventing erroneous operation Switch with device for preventing erroneous operation

1986-07-10

1988-03-22

Recla, Henry J.

Electricity: circuit makers and breakers

Electric switch details

Latches

200153J, 200 4318, H01H 320

Patent

active

047330350

ABSTRACT:
A switch operating member is provided in an opening at the upper portion of a switch housing, and a rotary knob has a cylindrical portion arranged about the operating member. A restoring spring has one end thereof engaged with the switch housing and has its other end engaged with the rotary knob. Locking means are provided comprising a projection on the outer periphery of the operating member and an engaging portion on the cylindrical portion of the rotary knob, or vice versa. The operating member is automatically locked against up-and-down movement when the projection is brought into locking engagement with the engaging portion owing to restoration of the rotary knob. A cam groove having steps for preventing reverse movement is provided on the operating member as the engaging means. The switch operating member is locked at an initial position while the projection is in abutting contact with the cam groove. When the switch is unlocked by turning the rotary knob, the operating member can be manipulated, after which the operating member is returned to its initial position and locked automatically by restoration of the rotary knob and the operating member. This prevents the user from forgetting to lock the switch and also prevents the switch from being operated erroneously or inadvertently.

REFERENCES:
patent: 2119778 (1938-06-01), Crockett, Jr.
patent: 2523125 (1950-09-01), Ley

Affiliated with

Also associated with

Rating

Switch with device for preventing erroneous operation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Switch with device for preventing erroneous operation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switch with device for preventing erroneous operation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-443286