Percussion massager having variable and selectable stroke length
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United States of America Patent
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Oct 24, 2023
Grant Date -
N/A
app pub date -
Nov 11, 2021
filing date -
Dec 2, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
An adjustable stroke length percussion massage device includes a stroke arm connected to a piston which is connected to a massage tool for providing a massage to a user. The stroke arm is secured to a crank pin of a crank mechanism which includes a rotatably connected crank housing and crank base, the crank pin being movably secured between the crank housing and crank base such that the crank pin moves from a first end to a second end of a sliding groove located in the cam housing when a rotation direction of the single unit is reversed by a motor. When the crank pin is moved from the first end to the second end of the sliding groove, a stroke length of the piston is changed.
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