Cutting by use of rotating axially moving tool – Miscellaneous – Drill guide
Patent
1981-12-07
1988-01-12
Bilinsky, Z. R.
Cutting by use of rotating axially moving tool
Miscellaneous
Drill guide
81 16, 279 1K, B23B 3106
Patent
active
047187972
ABSTRACT:
A chuck key pad (10) disclosed has a unitary construction that is snapped onto an associated chuck key to permit application of a greater torque than would otherwise be possible during tightening and loosening of a chuck. The pad (10) includes a body (28) having a central hole (30) that receives the conventinal shaft of the chuck key and also includes spaced retainers (32) that engage the chuck key handle on opposite sides of its shaft upon mounting such that locking portions (34) of the retainers resiliently deflect over the handle with a snap action. In its preferred construction, the pad body (28) includes a central portion (36) defining the shaft hole (30) and also includes a pair of opposite end portions (38) including spaced pairs of the retainers (32). An elongated groove (40) extends through the central portion (36) and the end portions (38) of the pad to receive the key handle. Spaced surfaces (42) of the locking portions (34) converge toward the groove (40 ) to permit the snap action mounting as pressure is applied between the pad and the key upon mounting. One embodiment of the pad includes generally flat gripping surfaces (44) on the body, while another embodiment includes curved gripping surfaces (46) that define oppositely facing depressions on each side of the key shaft.
REFERENCES:
patent: 1647396 (1927-11-01), Decker
patent: 2312150 (1943-02-01), Conner
patent: 2552694 (1951-05-01), Stoner
patent: 2592094 (1952-04-01), Willenbring
patent: 2941426 (1960-06-01), Muller et al.
patent: 3752202 (1973-08-01), Condon
patent: 4032160 (1977-06-01), Karasa et al.
patent: 4111079 (1978-09-01), Derbyshire
patent: 4123195 (1978-10-01), Purviance
patent: 4147184 (1979-03-01), Jess
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