Manually tightened chuck
OwnerWenhua Zhouinventor
Life of this patent
Estimating the term…
Abstract
A manually tightened chuck including a hollow chuck body member, provided with three bores inclined forwardly toward a central axis. A jaw is slidable in each inclined bore, a nut is sheathed on the peripheral surface of the chuck body member, and is interconnected with each jaw through threads. A peripheral surface of the nut is provided with a front sleeve, and on a peripheral surface of the chuck body member a rear sleeve is sheathed also. In the middle of the chuck body member a stepped part extends radially outwardly and includes a surface opposite to a rear end surface of the nut. Plural bearing balls are disposed in circular grooves formed in the opposed surfaces of the nut and chuck body member.
Claims14
A manually tightened chuck comprising:
- a hollow chuck body member, said chuck body member including three inclined bores inclined forwardly and toward a central axis and being equally spaced;
- a jaw disposed slidably in each inclined bore;
- a nut sleeved over said chuck body member, said nut being interconnected with each said jaw through cooperating threads;
- a front sleeve disposed on a peripheral surface of said nut and operably engaged with said nut by torque transmission structure;
- a rear sleeve disposed over a peripheral surface of said chuck body member;
- a middle portion of said chuck body member including a stepped part extended radially outwardly, said stepped part including a facing surface opposite a rear end surface of said nut;
- circular groove means formed in at least one of said facing surface and said rear and surface of said nut;
- and
- a plurality of bearing balls disposed in said groove means.
A manually tightened chuck comprising:
- a hollow chuck body member, said chuck body member including plural inclined bores inclined forwardly and toward a central axis and being equally spaced;
- a jaw disposed slidably in each inclined bore;
- a nut sleeved over said chuck body member, said nut being operably interconnected with each said jaw;
- a front sleeve disposed on a peripheral surface of said nut and operably engaged with said nut by torque transmission structure;
- a middle portion of said chuck body member including a stepped part extended radially outwardly, said stepped part including a facing surface opposite a rear end surface of said nut;
- circular groove means formed in at least one of said facing surface and said rear end surface of said nut;
- a plurality of bearing balls disposed in said groove means;
- and
- said nut includes an extended part extended forwardly, wherein said extended part includes an inner bore slide fitted with a peripheral surface of said chuck body member.
A manually tightened chuck comprising:
- a chuck body member, said chuck body member including plural inclined bores inclined forwardly and toward a central axis;
- a jaw disposed slidably in each inclined bore;
- a nut sleeved over said chuck body member, said nut being operably interconnected with each said jaw;
- a front sleeve disposed on a peripheral surface of said nut and operably engaged with said nut by torque transmission structure;
- a middle portion of said chuck body member including a stepped part extended radially outwardly, said stepped part including a facing surface opposite a rear end surface of said nut;
- circular groove means formed in at least one of said facing surface and said rear end surface of said nut;
- a plurality of bearing balls disposed in said groove means;
- a bore formed in a rear end of said front sleeve;
- and
- a retaining sleeve disposed in said bore in said rear end of said front sleeve.
Dependencies are inferred from the claim text.