Chucks or sockets – Socket type – Obliquely guided reciprocating jaws
Patent
1979-11-29
1981-04-07
Baldwin, Robert D.
Chucks or sockets
Socket type
Obliquely guided reciprocating jaws
74750R, 279 64, B25B 1344, B23B 3106
Patent
active
042601690
ABSTRACT:
A keyless chuck for attaching a drill bit to the rotary shaft of a drill. A sun gear is fixed to the rotary shaft and coacts with a set of planetary gears to rotate a body member having a plurality of threaded jaw members movably attached thereto. A screw ring member coacts with the jaw members to selectively cause the jaw member to open and close when the jaw members rotate relative to the screw ring member. A ring gear member is attached to the screw ring member and coacts with the planetary gears to allow the screw ring member to normally rotate with the jaw members unless substantial resistance is applied to the ring gear member to hinder its rotation.
REFERENCES:
patent: 913059 (1909-02-01), Savage
patent: 2684856 (1954-07-01), Stoner
patent: 3974718 (1976-08-01), Kylberg
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