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. 11, 1984
Filed:
Feb. 11, 1983
Andre Debaudringhien, Norwalk, CT (US);
John W Hoover, Huntington, CT (US);
Pitney Bowes Inc., Stamford, CT (US);
Abstract
In a tape recording machine having a capstan drive system for driving the tape, an improved slip clutch for allowing the take up reel to be driven at a variable rotational speed while the capstan is driven at a uniform rotational speed. The slip clutch includes a driven spindle, a plastic member fixedly secured to the top of the driven spindle, the member having a lower, elongate cylindrical portion and an upper, outwardly extending flange defining a downwardly facing shoulder and an upwardly facing cam surface, and a substantially annular, plastic hub frictionally engaging the cylindrical portion of the plastic member and having an interior diameter slightly smaller than the external diameter of the plastic member cylindrical portion. The hub includes a slot extending the full height of the hub whereby assembly of the hub onto the plastic member causes the hub to open slightly so that the internal diameter of the hub corresponds to the external diameter of the cylindrical portion of the plastic member, thereby allowing for slippage between the hub and the plastic member as necessary. At least one of the plastic member and the plastic hub includes a lubricant therein to prevent occurrence of the stick slip phenomenon.