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:
Sep. 17, 2019
Filed:
Jan. 05, 2018
Dongguan Weihong Hardware and Plastic Products Co., Ltd., Dongguan, CN;
Wei Lu, Dongguan, CN;
DONGGUAN WEIHONG HARDWARE AND PLASTIC PRODUCTS CO., LTD., Dongguan, CN;
Abstract
An electric push rod includes a drive motor, an outer tube, a threaded rod, a screw nut and a slider block. The outer tube is fixed to the drive motor, the threaded rod and the screw nut are located in the outer tube, the screw nut is in a threaded connection with the threaded rod, the drive motor is connected with the threaded rod to drive the threaded rod, and the slider block is sleeved on the outer tube and supported on the screw nut. When the threaded rod is rotated inversely to actuate the screw nut to move downwards, the slider block will not move downwards or trend to move downwards due to the screw nut fails to fix on the slider block, thus hands or fingers will not be jammed by the headrest even if the hands or fingers are rested beneath the headrest.