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US 7,108,459 B1Granted
Power assisted drill press
OwnerThomas L. Muellerinventor
Life of this patent
Estimating the term…
Abstract
A power assisted drill press having a feed cylinder fed by a variable pressure regulator which allows a user to controllably feed a bit and work material together while activating a drill motor to rotate the bit. An embodiment of the power assisted drill press utilizes a suction cup and venturi system for attachment of the press to a surface work material. The drill press uniquely allows a person to variably activate the feed cylinder and also activate the drill motor with a single hand.
Claims15
A power assisted drill press comprising:
- a drill motor having an actuation switch and a bit, said drill motor mounted with a motor frame;
- and
- a press frame having a frame support having a first and a second end and a frame base nearest said second end, said motor frame movably mounted with said press frame and placed nearest said first end whereby said bit is opposite yet substantially pointing toward a plane of said second end;
- and
- a gap between said bit and said frame base, said gap allowing a work material to be substantially placed;
- and
- a pneumatic feed cylinder substantially mounted with said press frame, said pneumatic feed cylinder having a moving shaft contacting said drill motor or motor frame and a pneumatic input port whereby a pneumatic pressure into said input port creates a force onto said shaft and thereby promotes movement of said shaft and said drill motor;
- and
- an pneumatic variable pressure regulator substantially mounted with said motor or motor frame having an output port connected with said input port of said feed cylinder and an activating lever having a displacement, said regulator supplying said pneumatic pressure from said output port in a pressure value relative to said activating lever displacement and substantially venting said pneumatic pressure when said lever is not displaced,
- whereby said work material and said bit approach and substantially contact when said moving shaft extends due to said pneumatic pressure provided to said feed cylinder and said feed cylinder provides a force between said bit and said work material substantially proportional to said activating lever displacement.
7 more elements
A power assisted drill press comprising:
- a press frame having a frame support having a first end and a second end and a top plate attached near said frame first end and a frame base attached near said frame second end;
- and
- a drill motor having an actuation switch, said motor attached with said top plate;
- and
- a pneumatic feed cylinder having a pneumatic input port and an extending shaft, said cylinder mounted with said frame base and said extending shaft capable of extending toward said drill motor;
- and
- an air pressure regulator substantially positioned near said motor having an output port connected with said cylinder input port and an activating lever having a displacement, said regulator supplying a pneumatic pressure from said output port in a pressure value relative to said activating lever displacement and substantially venting said pneumatic pressure when said lever is not displaced;
- and
- said extending shaft extending toward said drill motor when said activating lever is displaced and supplying a force substantially proportional to said activating lever displacement.
6 more elements
A power assisted drill press comprising:
- a press frame having a frame support having a first end and a second end and a top plate attached near said frame support first end and a frame base attached near said frame support second end;
- and
- one or more guide rods, each having a first and a second end, said guide rods slidably mounted with said top plate;
- and
- a motor frame having a drill motor and mounted near said first end of said one or more guide rods;
- and
- one or more springs slidably mounted between said top plate and said second end of said guide rods to supply retraction force to said motor frame;
- and
- a pneumatic feed cylinder mounted with said top plate and having an extending shaft capable of contacting said motor frame and also having a pneumatic input port;
- and
- an air pressure regulator having an output port connected with said input port of said feed cylinder and a lever capable of supplying a pneumatic pressure to said cylinder having a pressure value substantially proportional to a displacement of said lever, whereby said motor frame and guide rods may be moved toward said frame base with a force substantially proportional to said lever displacement;
- and
- a suction cup having a cup cavity and attached near said second end of said frame support;
- and
- a venturi capable of creating a vacuum, said vacuum of said venturi connected with said cup cavity whereby said suction cup may attach with a surface.
12 more elements
Dependencies are inferred from the claim text.