Swiveling wheel assembly for a cart
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United States of America Patent
Stats
-
Nov 23, 1993
Grant Date -
N/A
app pub date -
Oct 22, 1991
filing date -
Oct 17, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A swivelling wheel assembly containing a wheel whose swivelling action around a vertical axle may be locked or unlocked by rotating the wheel in one direction or the other. A curved double control lever is housed in a space between the thrust bearing and the tread of the wheel in the area of the lateral extensions of the fork joint. A lower lever arm holds a friction device engaging the tread of the wheel. An upper lever arm contains a locking means which can be received in a locking slot constructed in a housing component which is fixed relative to the pivot axle. A circular cover of the fork joint contains a tracking groove to guide the upper lever arm.
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