SELF-LOCKING JACK
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United States of America Patent
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Issued Date -
Jun 16, 2022
app pub date -
Mar 27, 2020
filing date -
Mar 27, 2020
priority date (Note) -
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Abstract
A jack includes a main body (14) with a cavity (18). A lifting cylinder (42) is supported on the main body and is extendable into the cavity. A lock (30, 34) is movably coupled to the main body. A spring (38) is coupled to the lock and biases the lock into the cavity. A cylinder (86) is coupled to the lock and biases the lock out of the cavity against the biasing force of the spring.
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