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US 5,533,842 AGranted
Portable peck feed drilling system
AssigneeCooper Industries, Inc.
InventorsChris L. Johnson, Edwin J. Deremo
Life of this patent
Estimating the term…
Abstract
A peck feed drill incorporates a motor gear quill and a feed control assembly together on a moving race track shaped piston. External construction of the housing permits mounting of an indexing adaptor plug for attachment of drill bushings. Internal construction of the housing provides for passage of air to the various components to which control tool operation. Valves within the air logic circuitry are multi-functional to minimize the number of parts.
Claims26
A peck feed drill, comprising:
- a housing having a bore therein;
- an advancing and retracting motor gear quill disposed to be extended from said bore;
- a feed control system for regulating the advancement and retraction of said motor quill;
- a piston assembly disposed in said bore and constructed and arranged to simultaneously advance and retract both said motor gear quill and said feed control system.
1 more element
An air feed drill, the improvement therein comprising:
- a housing having a bore therein;
- a drill quill and a feed control assembly disposed in said bore and moveable with respect thereto;
- and
- a piston disposed in said bore and interconnected to said feed control assembly and said motor gear quill.
1 more element
Dependencies are inferred from the claim text.