Locking device for a telescopic stem of a trolley

Details Locking device for a telescopic stem of a trolley Locking device for a telescopic stem of a trolley

2008-05-13

2008-05-13

Phan, Hau (Department: 3618)

Land vehicles

Wheeled

Extensible

C280S047315, C016S113100

Reexamination Certificate

active

10563174

ABSTRACT:
Locking device for a telescopic stem for a trolley wherein the stem comprises an inner stem and an outer stem, which may glide into each other, characterized in that a friction element is arranged in the outer stem and that the inner stem is equipped with the blocking element grasping into the friction element and locking the movement of the inner stem in relation to the outer stem, in that the blocking element presses against the friction element of housing with a conical groove linked to a rod stretching from the housing to the upper end of the inner stem and connected to a handle which influences the position of the housing.

REFERENCES:
patent: 5459908 (1995-10-01), Chen
patent: 5500981 (1996-03-01), Ho
patent: 5584097 (1996-12-01), Lu
patent: 5729866 (1998-03-01), Chg
patent: 6009598 (2000-01-01), Chang
patent: 6081967 (2000-07-01), Chang
patent: 6122800 (2000-09-01), Cheng
patent: 6148477 (2000-11-01), Cheng
patent: 6161253 (2000-12-01), Tu
patent: 6223392 (2001-05-01), Chang
patent: 6295698 (2001-10-01), Chang
patent: 6918476 (2005-07-01), Chou

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