Patent · US Expired

Device for transmitting torque

US4273173A · kind A · utility

18Cited by
7References
1Claims
0Family size

Assignee

Inventors

Key dates

Filing dateOct 17, 1979
Grant dateJun 16, 1981
Priority date
Expiry dateOct 17, 1999

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB25G1/085
  • WIPO fieldMachine tools
  • WIPO sectorMechanical engineering

Abstract

A screwdriver or the like has a shank adapted to hold any one of a number of double ended bits together with a handle for the shank having storage slots for those bits not being held in place by the shank. A split ring, rotatable on the stem of the handle, holds the stored bits against displacement until the ring is rotated to place the space between the ends of the ring into alignment with a selected slot.

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