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US 5,071,293 AGranted
Feed rate regulator for a hand-held drill
AssigneeMcDonnell Douglas Corporation
InventorWesley G. Wells
Life of this patent
Estimating the term…
Abstract
Barrel casing attached to the housing of a hand-held drill. A retractable guide arm is cantilevered from one end of the barrel casing. The cantilevered end of the guide arm has a passageway for the drill bit, and thereby guides it. A rate limiter is attached to the other end of the barrel casing and in axial alignment with it. On the inside of the barrel casing, the rate limiter is connected to the guide arm by abutment.
Claims9
A feed rate regulator for attachment to a drill comprising:
- a casing adapted for attachment to a drill;
- an arm projecting from said casing and being slideably moveable into and out of said casing;
- a hydraulic rate limiter having a plunger rod projecting therefrom which is slideably moveable into and out of said rate limiter;
- said rate limiter being adapted for attachment to said casing;
- said arm including a shoulder screw;
- and
- said plunger rod being axially aligned with said shoulder screw and abutting an end of said shoulder screw when said rate limiter is attached to said casing.
4 more elements
Dependencies are inferred from the claim text.