Tamper resistant hand-operated pneumatic pump
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United States of America Patent
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Jan 9, 2018
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N/A
app pub date -
May 28, 2013
filing date -
May 28, 2013
priority date (Note) -
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Abstract
An Example can include an elongate pump barrel extending along a length and defining an elongate hollow piston chamber. The Example can include a piston slidably movable within the piston chamber to compress air within the piston chamber. The Example can include a piston rod connected to the piston. The Example can include a handle connected to the piston rod to reciprocally slide the piston in the piston chamber. The Example can include a piston rod seal disposed around the piston rod and coupled with the elongate pump barrel. The Example can include a downward opening air intake passage, located away from the rod seal, in fluid communication with a top of the piston.
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