Console switch

Details Console switch Console switch

1990-02-20

1991-07-23

Luebke, Renee S.

Electricity: circuit makers and breakers

Switch activation inhibitor

Removable actuator

200 4308, 200330, 200334, 200332, 272 69, H01H 2706

Patent

active

050345761

ABSTRACT:
A switch apparatus for an electrical machine comprises a keyway and a removable key. A spring-loaded protrusion on the key prevents direct insertion of the key into an "ON" position, and communicates with a guideway for movement of the key between the "OFF" and "ON" positions. The key is directly removable from both the "ON" and "OFF" positions simply by pulling, to deactivate the machine in an emergency or accident. Unauthorized and accidental operation of the machine may be prevented by control of the key.

REFERENCES:
patent: 3542977 (1970-11-01), Thornley
patent: 3711812 (1973-01-01), Cherry
patent: 3714383 (1973-01-01), Leonard et al.
patent: 4250358 (1981-02-01), Gilbertson
patent: 4454392 (1984-06-01), Rapp et al.
patent: 4458115 (1984-07-01), Peterson
patent: 4539452 (1985-09-01), Draxler et al.
patent: 4563552 (1986-01-01), Fushimoto
patent: 4695684 (1987-09-01), Bochard et al.
patent: 4762968 (1988-07-01), Hilton
patent: 4771148 (1988-09-01), Bersonnet
patent: 4904829 (1990-02-01), Berthaud et al.
Precor, Inc. of Bothell, WA Advertised a Treadmill in a 1988 Brochure which mentioned a "Unique Safety Key".
Vitamaster, of Tyler, TX, published a product instruction book showing treadmills with a "safety pull pin".

Affiliated with

Also associated with

Rating

Console switch does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Console switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Console switch will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-433798