Title: Plusing device for control damper of ventilate safety helmet
Application Number: 03133186 Application Date: 2003.07.25
Publication Number: 1568850 Publication Date: 2005.01.26
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: A42B3/28
Applicant(s) Name: Ma Zhangqing Address:
Inventor(s) Name: Ma Zhangqing
Attorney & Agent: ren yongwu
Abstract:
     The invention is a gain apparatus for airflow control valve body of ventilative safety cap, comprising an airflow control valve body equipped behind the big circular hole on the top of the ventilative safety cap, a valve plate, a cover casing with orifices, and a warming sheath. The airflow control valve body can be adjusted according to temperature variation to achieve the goal of cool in summer and warm in winter. The movable valve can be pushed forward in summer to make the air flow out of the cap from the space between the valve and the rain baffle, and can be pushed backward in winter to form an enclosure with the rain baffle and block heat radiation from the safety cap.
Time: 18
<- Previous Patent:Breath guard assembly for helmet   |  Next Patent:Device for detecting the nature o... ->