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:
Jun. 18, 2013
Filed:
Sep. 22, 2009
Ying Qiu, Guangdong, CN;
Liming Fang, Guangdong, CN;
Jinyuan Xu, Guangdong, CN;
Jie MA, Guangdong, CN;
Ying Qiu, Guangdong, CN;
Liming Fang, Guangdong, CN;
Jinyuan Xu, Guangdong, CN;
Jie Ma, Guangdong, CN;
Rocateq International B.V., Barendrecht, NL;
Abstract
The invention relates a lockable caster wheel. The lockable caster wheel can be widely used in shopping carts, luggage carts, strollers, turnover carts, stretcher cars and many other trolleys. The controlling mechanism of the lockable caster wheel comprises a controller which comprises a signal receiving device and a locking device which is controlled by the controller. The locking mechanism further comprises a revolving damper which comprises a shell having a restricting structure and a damping wheel located inside the shell. The shell, through its restricting structure, separates from or connects with the locking device to form unlocked or locked states. The damping wheel connects with the wheel assembly. The caster wheel uses a damper. Beyond the allowed area of use, the trolleys can be slowly pushed for a few of meters because of the damper effect, but it will not suddenly stop completely. Therefore it will not present danger to the users. It can also prevent the casters from being damaged by a forceful push when they are locked.