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:
Dec. 13, 1983
Filed:
Apr. 20, 1982
Applicant:
Inventor:
Thomas W Winstead, Cockeysville, MD (US);
Assignee:
Maryland Cup Corporation, Owings Mills, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ; B29D / ;
U.S. Cl.
CPC ...
425142 ; 425143 ; 425149 ; 425150 ; 425308 ; 425310 ; 4253261 ; 425345 ; 425350 ; 425377 ; 425388 ; 425D / ;
Abstract
Apparatus for continuous thermoforming of sheet material including an extruder, stretching means, a rotary wheel having female mold means thereon and plural plug-assist means interlinked so as to form an orbiting device having the plug-assist members engaging the sheet material about a substantial arc of wheel surface and means to reciprocate the plug assist members into and out of engagement with the female mold means.