Safety helmet, especially for users of automotive vehicles

Apparel – Guard or protector – For wearer's head

Patent

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Details

2436, A42B 302

Patent

active

045148643

ABSTRACT:
The safety helmet has a viewing opening which can be covered by a visor. Several vent openings and air passage openings are arranged at the chin protector of the safety helmet. Such openings terminate together into an air-collecting chamber provided on the inside of the chin protector. Two ventilating tubes extending to the top edge of the viewing opening lead away from this air-collecting chamber. An air stream produced by a pressure head passes through the vent openings--as well as through the air passage openings if the visor is opened somewhat--into the air-collecting chamber and is conducted by the ventilating tubes onto the inside of the visor, thereby substantially preventing any fogging of the visor by moisture precipitation.

REFERENCES:
patent: 2099464 (1937-11-01), Bruner
patent: 2526737 (1950-10-01), Farina
patent: 2579942 (1951-12-01), MacLean
patent: 3031675 (1962-05-01), Dubach
patent: 3911914 (1975-10-01), Johansson
patent: 4101980 (1978-07-01), Stepan et al.
patent: 4290150 (1981-09-01), Berthelot
patent: 4354285 (1982-10-01), Rudd
Rider Magazine, "The New Nava 2AC with Air Control," Mar. 1984.

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