Apex - holding strap for the interior furnishings in the case of protective helmets, in particular in the case of mountain man - and industry workers - helmets.

• 1. 一种用于建筑工程的施工人员防护头盔 [P] . 中国专利： CN211558952U . 2020-09-25
• 2. 特别地用于林业工人的保护头盔的支撑带的拉紧单元 [P] . 中国专利： CN103096746B . 2015.11.25
• 3. Interior fittings for a protective helmet, in particular steel helmets. [P] . 德国专利： DE1688864U . 1954-12-09

  机译： 防护头盔的内部配件，特别是钢盔。

• 4. ADJUSTABLE CHIN STRAP FOR MOTORCYCLE PROTECTIVE HELMETS. [P] . AT109628T . 1994-08-15

  机译： 用于摩托车防护头盔的可调节下巴带。

• 5. INTERIOR FOR PROTECTIVE HELMETS. [P] . AT33533T . 1988-05-15

  机译： 防护头盔的内部。

• 1. A Qualitative Research of the Use of Personal Protective Equipment on the Workers of Metal Manufacturing Industry [C] . Erna Agustin Sukmandari, Tangguh Dwi Pramono, Agung Tyas Subekti International Conference on Health Sciences . 2019
• 2. Protective capability of bicycle helmets. [O] . N J Mills 1990
• 3. Protective Effectiveness of Various Types of Helmets in Motorcycle Accidents-Especially Risk Report on Japanese Industrial Standard A-type Motorcycle Helmets. [O] . Manabu Nemoto, Yoji Sato, Hideaki Goto, 1999

• 1. 汽车-自行车碰撞事故中骑行人员损伤及头盔防护性能研究 [A] . 马兴会 . 2021