Permanent magnet retarder
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United States of America Patent
Stats
-
Nov 10, 2020
Grant Date -
Sep 27, 2018
app pub date -
May 30, 2018
filing date -
Dec 1, 2015
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A permanent magnet retarder comprises a housing and a cylinder. The cylinder (2) is inserted into the housing (1) and can move up and down relative to the housing (1). The housing (1) is further provided with a conductor (3) and a permanent magnet (4) therein which are disposed oppositely and constitute a permanent magnet eddy current deceleration assembly. The conductor (3) is fixedly disposed on an inner wall of the housing (1) and the permanent magnet (4) is fixedly disposed on the cylinder (2); alternatively, the conductor (3) is fixedly disposed on the cylinder (2) and the permanent magnet (4) is fixedly disposed on the inner wall of the housing (1). The housing (1) is further provided with an upper return permanent magnet (5) and a lower return permanent magnet (6) therein disposed oppositely.
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