The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 27, 2009
Filed:
Oct. 23, 2006
Dae Shik Park, Rowland Heights, CA (US);
Dae Shik Park, Rowland Heights, CA (US);
Other;
Abstract
A crutch equipped with double shock absorbers is provided. The crutch of the current invention has an air shock absorber vertically combined with a spring shock absorber in one base shaft. A rubber shoe receives bottom of the spring shock absorber. The crutch of the current invention absorbs the shock of stepping ground firstly with the spring shock absorber and then reduces the impact with the air shock absorber. The double shock absorbing mechanism provides a smooth feeling of stepping the ground to a user. The strength of the resilient force of the crutch can be adjusted for each user, based on weight of a user, by medical doctor's characterization.