Chuck for hammerdrills and the like

Details Chuck for hammerdrills and the like Chuck for hammerdrills and the like

1977-03-25

1978-09-26

Whitehead, Harold D.

Chucks or sockets

Socket type

Obliquely guided reciprocating jaws

B23B 522

Patent

active

041164547

ABSTRACT:
A chuck for hammerdrills and the like is provided with a chuck body; a plurality of jaws on said chuck body for engaging and holding a tool bit; and means connected to said jaws for adjusting the engagement of said jaws with the tool bit, said means comprising a guide sleeve having a main portion with an outer and inner surface, said main portion defining a central axis therethrough, a toothed gear encircled by said sleeve and having a circumferentially extending groove having a roughened surface facing the inner surface of said sleeve, said sleeve including at least one inwardly offset locking portion having an outer and inner surface which are inwardly offset with respect to the main portion of said sleeve, said inwardly offset portion projecting into said groove.

REFERENCES:
patent: 3938817 (1976-02-01), Rohm
patent: 3992020 (1976-11-01), Derbyshire

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