Cable drive geometry

Details Cable drive geometry Cable drive geometry

1989-04-10

1990-09-18

Herrmann, Allan D.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

745005, 74506, F16H 1906

Patent

active

049570145

ABSTRACT:
An apparatus providing a substantially fixed length cable drive comprises a motor-driven capstan having a helical groove. The groove on the capstan is sized to receive opposite ends of a cable for simultaneously letting out and taking up the cable. The cable passes over a fixed pulley and is attached to a carriage at a point intermediate the capstan and pulley. The carriage is guided along a rail defining a fixed mass path. The section of cable between the carriage and pulley is parallel to the mass path. The cable ends on the capstan are disposed on opposite sides of a plane containing the parallel cable section during travel of the carriage along the mass path.

REFERENCES:
patent: 3403578 (1968-10-01), Morse
patent: 3500692 (1970-03-01), Sangster et al.
patent: 3743381 (1973-07-01), Moodie
IBM Technical Disclosure Bulletin, vol. 22, No. 88, Jan. 1980, p. 3758, "Ratchet Control of Cable Drive for Printer Escapement", by C. G. Brown.

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