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:
Feb. 15, 1977
Filed:
Apr. 16, 1975
Applicant:
Inventor:
Henry N Staats, Deerfield, IL (US);
Assignee:
General Binding Corporation, Northbrook, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264336 ; 264230 ; 264299 ; 264328 ;
Abstract
A novel ring binder for securing a plurality of perforated sheets in a loose-leaf fashion, wherein the ring element is generally circular and has a generally radial slit permitting it to open for the insertion of sheets, and wherein the terminal ends of the ring are each provided with radially inwardly directed projections whereby individual sheets of bound paper are restrained against ready removal from the ring; a novel method of manufacturing such rings is also provided.