Pushbutton dials

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

H04M 150

Patent

active

040499243

ABSTRACT:
A pushbutton dial has a cover, a back member and a circuit member assembled in a sandwich formation, the cover supporting a plurality of pushbuttons arranged in columns and rows. Longitudinal and transverse shafts are mounted between, the cover and back member, actuation of a pushbutton rotating a unique pair of longitudinal and transverse shafts. Frequency contacts are mounted on the back surface of the circuit member - usually a printed circuit board - and are actuated by pins passing through the back member and the circuit member one end of each pin in engagement with one set of frequency contacts and the other end of each pin in contact with a lever on one of the longitudinal shafts or one of the transverse shafts. The dial can also be provided with a new form of common switch comprising a series of cantilevered spring contacts mounted side by side and actuated by a cam member in a predetermined sequence.

REFERENCES:
patent: 3227819 (1966-01-01), Winther
patent: 3479470 (1969-11-01), Ham, Jr.
patent: 3626409 (1971-12-01), Hill et al.
patent: 3828155 (1974-08-01), Adams
patent: 3963879 (1976-06-01), Klaiber et al.

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

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

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

Rate now

     

Profile ID: LFUS-PAI-O-672582

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