Rubber-made covering member for push button switches

Electricity: circuit makers and breakers – Liquid contact – Time delay

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

H01H 1352

Patent

active

043907652

ABSTRACT:
The invention provides a push button switch covering member integrally made of a rubbery elastomeric material having an improved structure with which a much larger key stroke is obtained before a snapping action takes place in the covering member when the member is pushed at the center portion leading to the contact of the contact points than in the conventional ones. The covering member is constructed of (a) a central pushing part, (b) a first annular portion which may be in a form of a truncated cone or a cup laid upside down and is connected to the central pushing part at the upper end, (c) a second annular portion encircling and connected to the first annular portion and (d) a base flat connected to the second annular portion, at which the covering member is mounted on the base board of the switch, the relationship between the strengths of the first and the second annular portions being such that the first annular portion does not undergo a buckling deformation before the second annular portion is substantially deformed or bent around the connecting line between the second annular portion and the base flat.

REFERENCES:
patent: 3898421 (1975-08-01), Suzumura
patent: 3932722 (1976-01-01), Obata et al.
patent: 4127758 (1978-11-01), Lowthorp
patent: 4194105 (1980-03-01), Hodges

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Rubber-made covering member for push button switches does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rubber-made covering member for push button switches, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rubber-made covering member for push button switches will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-935151

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.