Two stage grease gun
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Aug 27, 2013
Grant Date -
Nov 5, 2009
app pub date -
May 5, 2009
filing date -
May 5, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A two stage grease gun with a handle capable of being actuated by a user is provided. The gun includes a high volume/low pressure piston for delivery of grease at a high volume and low pressure. A high pressure/low volume piston for delivery of grease at a high pressure and low volume is also included. Acutation of the handle by the user causes both pistons to move. A by-pass check valve is present and is configured to actuate based upon a backpressure. The by-pass check valve is not actuated by the user and effects the amount of grease dispensed by way of the high volume/low pressure piston. An associated method is also provided.
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