Cutting by use of rotating axially moving tool – Miscellaneous – Drill guide
Patent
1977-10-11
1978-10-31
McGehee, Travis S.
Cutting by use of rotating axially moving tool
Miscellaneous
Drill guide
81 90A, 279 1K, B23B 3900
Patent
active
041231953
ABSTRACT:
A chuck key holder in which a manual force is applied to handles of clamp members on one side of a drill chuck to position a chuck key that is rotatably mounted on a support to which the clamp members are pivoted in properly located spanning engagement with the chuck on its other side. Spring biasing of the clamp members from the closed clamping position about the chuck toward an open position moves ejecting portions of the clamp members against the chuck to automatically withdraw the chuck key once the manual force is released from the handles. Clamping portions of the clamp members are located between the handles and the axes of pivotal connection between the support and the clamp members. Partially circular clamping surfaces of the clamping portions have first ends adjacent the ejecting portions and second ends adjacent stops on the clamp members for limiting the extent of closing movement without the chuck between the clamp members. Each clamp member is preferbly molded from plastic with a unitary construction identical to the other clamp member and includes an integral spring portion that engages the support to provide the spring bias toward the open position. The support includes a pair of identical support members which are each molded from plastic with a unitary construction having a U shape. Securement of the support members to each other in an opposed relationship locates projections thereof in a spaced relationship at opposite ends of the support to receive and pivotally mount the respective clamp members therebetween for movement between the open and closed positions. Semicircular openings of the support members face each other to define a round opening that receives and rotatably mounts the chuck key.
REFERENCES:
patent: 2609719 (1952-09-01), Lilley
patent: 3457813 (1969-07-01), Mangas
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