Keyless type tool chuck

Details Keyless type tool chuck Keyless type tool chuck

1992-09-09

1993-11-16

Bishop, Steven C.

Chucks or sockets

Socket type

Obliquely guided reciprocating jaws

279140, 279902, B23B 3112

Patent

active

052616797

ABSTRACT:
In construction of a keyless tool chuck in which clamping torque is transmitted from a manually rotatable operation sleeve on a chuck body to tool clamping jaws in the chuck body via a power transmission unit including a cycloidal gear arrangement, an elastic impulsion sleeve is inserted between the operation sleeve and the chuck body so that elastic compressive deformation of the impulsion sleeve at forced rotation of the operation sleeve causes impulsive meshing engagement in the cycloidal gear arrangement to provide impulsive clamping force on a tool clamped by the jaws. Resultant clamping force is at least twice as large as that provided by a conventional cycloidal gear arrangement only.

REFERENCES:
patent: 1503809 (1924-08-01), Schulz et al.
patent: 5044643 (1991-09-01), Nakamura
patent: 5172923 (1992-12-01), Nakamura

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