Land vehicles – Wheeled – Extensible
Patent
1993-11-08
1994-10-04
Tyson, Karin L.
Land vehicles
Wheeled
Extensible
280 4718, 280 47315, B62B 112
Patent
active
053519841
ABSTRACT:
A trolley with two telescopic handles each including a first tube received in a second tube received in a third tube. The first tube has first and second holes formed therethrough. The second tube has first, second and third holes formed therethrough. The third tube has a hole formed therethrough. A first locking device is mounted on the second tube so that a latch thereof is insertable through the first hole formed through the second tube. The latch of the first locking device is further insertable through the first and second holes formed through the first tube to lock the first tube in different positions in the second tube. A second locking device is mounted on the third tube so that a latch thereof is insertable through the hole formed through the third tube. The latch of the second locking device is further insertable through the second and third holes to lock the second tube in different positions in the third tube. The handle is locked in a retracted position as the latch of the second locking device is inserted through the second hole formed through the second tube and the second hole formed through the first tube. An actuating pole with four blocks formed thereon is received in the handle to retract the latches into the first and second holes formed through the first tube so that the first tube is movable relative to the second tube and to retract the latches into the second and third holes formed through the second tube so that the second tube is movable relative to the third tube.
REFERENCES:
patent: 4896897 (1990-01-01), Wilhelm
patent: 4974871 (1990-12-01), Mao
patent: 5024458 (1991-06-01), Kazmark et al.
patent: 5127664 (1992-07-01), Cheng
patent: 5178404 (1993-01-01), Chen
patent: 5257800 (1993-11-01), Yang
patent: 5263727 (1993-11-01), Libit et al.
Mattix Carla
Pelton William E.
Tyson Karin L.
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