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:
Sep. 19, 1978
Filed:
Jul. 28, 1977
Applicant:
Inventor:
John D Vandervort, Cottage Grove, MN (US);
Assignee:
Minnesota Mining & Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
E05D / ;
U.S. Cl.
CPC ...
16142 ; 220335 ;
Abstract
The hinge structure which permits the platen cover to be forced toward the platen when positioned thereover and which will hold the cover in any desired positon between about 20.degree. and 90.degree. with respect to the platen. The hinge structure comprises a leaf spring on the machine frame which is urged into contact with a cam surface connected to the cover which cam surface in cooperation with the leaf spring provides a torsional force about the cover axis to counterbalance the weight of the cover and a frictional force which will maintain the cover in its desired fixed position.