Patent · US Expired

Power-driven rewind device of a camera

US4239166A · kind A · utility

8Cited by
3References
5Claims
0Family size

Assignee

Inventor

Key dates

Filing dateSep 13, 1979
Grant dateDec 16, 1980
Priority date—
Expiry dateSep 13, 1999

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03B17/425
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A power-driven rewind device for rewinding a film taken up on a take-up spool shaft onto a supply spool shaft comprises a first gear coupled to and rotatable with the supply spool shaft, a second gear operatively associated with the rotation of a motor when the film is rewound, a third gear meshing with both of the first and second gears and thereby displaceable between a coupled position and a disengaged position, and change-over means operatively associated with the rotation of the second gear to displace the third gear to the coupled position.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.