Devices for use in the application of working pressures and appa

Plastic article or earthenware shaping or treating: apparatus – Press forming apparatus having opposed press members

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

425141, 425394, 425411, B29C 1700, B30B 116, B30B 928, B30B 1514

Patent

active

039751325

ABSTRACT:
In the application of working pressures, devices are used of the type having at least two members by which the working pressure is applied and a connection between them operable to vary the relationship of one of them relative to the work. Each connection includes first parts with the first part rotatably carried by the one member. Each part has an eccentric portion of a circular section with that of the first part rotatable within the eccentric portion of the second part and the second part is rotatably carried by the other pressure-applying member. Adjusting means are provided to turn the parts equally but oppositely with the members operatively connected and with the axis of the eccentric portion of the second part always in the plane of a predetermined line of force inclusive of the axis of the first part. The devices are shown as the toggle joints operable by means responsive to fluid under pressure to move one of the platens of the forming station of a thermoformer in opening and closing the molds, said station also desirably having means to assist in the reciprocation of the platens with the toggle joints desirably having an acute angular relationship when the molds are open. The adjusting means desirably but not necessarily includes a servo motor controlled by a gauge continuously monitoring the thickness of the sheet material being advanced through the thermoformer.

REFERENCES:
patent: 1333648 (1920-03-01), Wennberg
patent: 2624915 (1953-01-01), Corson
patent: 3504074 (1970-03-01), Snow
patent: 3543344 (1970-12-01), Hunt
patent: 3632250 (1972-01-01), Snow
patent: 3687586 (1972-08-01), Hara et al.
patent: 3816052 (1974-06-01), Schoppee 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

Devices for use in the application of working pressures and appa does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Devices for use in the application of working pressures and appa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Devices for use in the application of working pressures and appa will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1483393

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