Patent · US Expired

Scanner drive clutch

US4330201A · kind A · utility

2Cited by
1References
3Claims
0Family size

Inventor

Key dates

Filing dateJul 7, 1980
Grant dateMay 18, 1982
Priority date—
Expiry dateJul 7, 2000

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03B27/6235
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A forward and reverse chain drive systems for a scanner has a one-way clutch mounted on the drive shaft for the scanner cable pulley. The clutch has a sprocket wheel linked by a chain drive to a reverse motor to turn the drive shaft in a first rotation direction when the reverse motor is energized. The sprocket wheel is free to rotate in the other rotation direction independently of the drive shaft so that when the reverse motor is de-energized at the end of the scanner reverse movement, the chain drive may move the clutch sprocket wheel in that other direction, as the chain reacts to reverse motor turn-off, without changing the position of the drive shaft.

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