Variable hand pressure activated power tool
OwnerSteven James Lindsayinventor
Life of this patent
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Abstract
A hand-held power tool for use in hand working operations including a hand pressure sensing element for adjusting the power of the tool. More specifically, the invention provides a hand engraving power tool that is activated from absence of power to much greater power or anywhere in between determined by the amount of pressure exerted by a human hand on the tool's handle.
Claims13
A hand-held power tool for use in hand working operations, for use with a supply of pressurized fluid, comprising:
- a body having a first and a second end;
- a tool tip holder at said first end for holding a tool tip;
- a hand placement location on said hand-held power tool for the user of said hand-held power tool to grip and hold said hand-held power tool during operation;
- a work energy means for supplying work energy to said tool tip;
- a variable fluid metering means for adjusting the amounts of said supply of pressurized fluid used for supplying varying amounts of said work energy means to said tool tip;
- a pressure sensing means for sensing the amount of pressure exerted by a human hand;
- between said hand placement location and said tool tip;
- said variable fluid metering and said work energy means will increase when pressure sensing means senses increased pressure;
- and
- said variable fluid metering and said work energy means will decrease when pressure sensing means senses decreased pressure.
A hand-held power tool for use in hand working operations in the hand engraving and jewelry fields, comprising:
- a body having first and second ends;
- a tool tip holder located at said first end for holding a tool tip;
- a handle made to be held in the human hand on said body;
- a variable power means for delivering variable power to said tool tip;
- a pressure sensing means for sensing the amount of pressure exerted by a human hand;
- between said handle and said tool tip;
- said variable power means will increase in power when said pressure sensing means senses increased pressure exerted by the user of said hand-held power tool on said handle with the human hand;
- and
- said variable power means will decrease in power when said pressure sensing means senses decreased pressure exerted by the user of said hand-held power tool on said handle with the human hand.
A hand-held pneumatic impact power tool for use in hand working operations for use with a supply of pressurized fluid, comprising:
- a body containing a bore and having first and second ends;
- said bore having a central longitudinal axis;
- a piston received within said bore and being shiftable relative to the body along said longitudinal axis;
- a tool tip holder at said first end for holding a tool tip;
- an oscillation means by which said piston will oscillate under the action of said supply of pressurized fluid;
- a flow control element;
- an inlet port;
- said inlet port in communication with said supply of pressurized fluid;
- said flow control element is movable between an off position in which the fluid flow is zero and a number of on positions in which the fluid flow ranges from zero to the pressure of said supply of pressurized fluid;
- and
- a pressure sensing element for sensing the amount of pressure exerted by a human hand;
- between said second end and said tool tip.
Dependencies are inferred from the claim text.