Key assembly

Details Key assembly Key assembly

1997-11-17

1999-05-18

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200517, H01H13/70;3/12

Patent

active

059052350

ABSTRACT:
A key assembly (10) comprises a depressible key (16) having a depending projection (22), a pair of electrical terminals (36), and a domed contact membrane (30) snappable between two positions for making and breaking electrical connection between the electrical terminals. The depression of the key (16) causes the projection (22) to urge the contact membrane (30) to snap from a first natural-bias position (FIG. 2(a)) in which the electrical terminals are not electrically connected to a second distorted position (FIG. 2(b)) in which the electrical terminals are connected. The projection comprises an annular flange confronting the contact membrane and laterally spaced apart from the apex (33) of the dome (32).

REFERENCES:
patent: 3783205 (1974-01-01), Boulanger
patent: 3829646 (1974-08-01), Lorteije et al.
patent: 4194105 (1980-03-01), Hodges
patent: 4476355 (1984-10-01), Mital
patent: 4518833 (1985-05-01), Watkins
patent: 4540865 (1985-09-01), Calder
patent: 4554426 (1985-11-01), Caste
patent: 4677268 (1987-06-01), Nemeth et al.
patent: 4766271 (1988-08-01), Mitsuhashi et al.
patent: 4778952 (1988-10-01), Watkins et al.
patent: 4924046 (1990-05-01), Howard
patent: 5266949 (1993-11-01), Rossi
patent: 5408060 (1995-04-01), Muurinen
patent: 5510584 (1996-04-01), Norris

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1761109