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:
Mar. 16, 1976
Filed:
Apr. 22, 1974
Robert Hugh Wilczewski, Riverton, WY (US);
Rudolf Karl Schaefer, Des Plaines, IL (US);
Victor Comptometer Corporation, Chicago, IL (US);
Abstract
One piece ribbon spool molded from suitable plastic, with no fastening hardware with spool or on ribbon required, comprising spaced circular side guide flanges, a central cylindrical hub joined by radial ribs with ribbon-receiving segmental cylindrical wall, a female ribbon latch forming a hook for receiving free end of a male ribbon latch to anchor end of ribbon therebetween, other end of male latch forming unitary hinge connection, and outer surfaces of latches when in ribbon-anchoring position describing extension of cylindrical surface of segmental ribbon-receiving wall, the male latch being narrower than the space separating the side flanges, and apertures in the latter opposite the latches to facilitate engagement and disengagement of the ribbon and the spool.