US Patent 7370877 Locking device for a telescopic stem of a trolley

Patent 7370877 was granted and assigned to Stokke AS on May, 2008 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Stokke AS

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7370877

Patent Inventor Names

Bjørn Refsum0

Date of Patent

May 13, 2008

Patent Application Number

10563174

Date Filed

June 25, 2004

Patent Primary Examiner

‌

Hau Phan

Patent 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.