Pump seal
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United States of America Patent
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-
Sep 19, 2023
Grant Date -
N/A
app pub date -
Jul 14, 2021
filing date -
Jul 15, 2020
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An annular seal for sealing an opening in a pump housing surrounding a piston rod includes a primary sealing portion with an inner surface adjacent to the piston rod and an outer surface adjacent to the pump housing. An initial sealing portion features an inner wall and an outer wall so that an annular space is defined therebetween. A top wall extends between the inner and outer walls. A coil spring is positioned within the annular space of the initial sealing portion and urges the inner wall into engagement with the piston rod and the outer wall into engagement with the pump housing.
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