Rotary hand tool
AssigneeCooper Industries, Inc.
InventorQuentin L. Elkins
Life of this patent
Estimating the term…
Abstract
The rotary wrist motion hand tool of the present invention includes a grip member having an insert and a bit holder having an attachment member. The attachment member has one end formed by two opposed prongs with a recess between the prongs for slidingly receiving one end of the insert. Both prongs have apertures through their centers which are aligned with a hole in the insert. The insert and the attachment member are rotatably attached by passing a pin through the apertures of the prongs and the hole of the insert. In circumstances requiring high torque, the operator may manually rotate the grip member of the hand tool ninety degrees so that the longitudinal axes of the insert and the attachment member are perpendicular.
Claims27
A hand tool supporting a bit insert for manually manipulating a fastener, comprising:
- a handle having a first member;
- a holder adapted for supporting the bit insert and having a second member;
- said first and second members forming a rotatable joint having a first position aligning said handle with said holder and second and third positions not aligning said handle with said holder;
- a third member rotatably attached to said second member and having a first locked position and a first unlocked position;
- a first positioning member housed in said second member and positioning said third member in one of said first locked and first unlocked positions;
- and
- said third member locking said joint in said first position when said third member is in said first locked position and allowing said joint to rotate into said second and third positions when said third member is in said first unlocked position.
A hand tool supporting a bit insert for manually manipulating a fastener, comprising:
- a handle having a first member;
- a holder adapted for supporting the bit insert and having a second member with a tapered end;
- said first and second members forming a rotatable joint having a first position aligning said handle with said holder and second and third positions not aligning said handle with said holder;
- a third member having a tapered inner wall at one end and threadingly engaging said first member so that said third member can be manipulated on said first member;
- and
- said third member locking said handle and said holder in said first position when said third member is manipulated so that said third member contacts said second member.
A hand tool supporting a bit insert for manually manipulating a fastener, comprising:
- a handle having a first member;
- a holder adapted for supporting the bit insert and having a second member;
- said first and second members forming a rotatable joint having a first position aligning said handle with said holder and second and third positions not aligning said handle with said holder;
- a third member rotatably attached to said second member and having an inner surface with a groove disposed around the circumference of said inner surface;
- a first positioning member housed in said second member and having an arcuate member biased against said groove to allow rotation of said third member;
- and
- said third member locking said joint in said first position when said third member is rotated to a first locked position and allowing said joint to rotate into said second and third positions when said third member is rotated to a first unlocked position.
Dependencies are inferred from the claim text.