Tape recorder slip clutch

Winding – tensioning – or guiding – Reeling device – Fishing rod reel

Patent

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Details

242201, 242208, G11B 1528, G11B 1532

Patent

active

044705611

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.

REFERENCES:
patent: 3696775 (1972-10-01), Markart
patent: 3724780 (1973-04-01), Wolf
patent: 3894702 (1975-07-01), Okano
patent: 3913868 (1975-10-01), Katahira
patent: 4009846 (1977-03-01), Coruzzi
patent: 4059245 (1977-11-01), Hirose
patent: 4191345 (1980-03-01), Sato
patent: 4413793 (1983-11-01), Komatsubara et al.

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