The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 17, 1976
Filed:
Jun. 05, 1975
Karl H Keim, South Portland, ME (US);
United Industrial Syndicate, Inc., Portland, ME (US);
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.