Helmet

United States Patent m

Kamata

[ii]

[45]

II

US005212843A

Patent Number:
Date of Patent:

5,212,843 May 25,1993

[54] HELMET

[75] Inventor: Eitaro Kamata, Tokyo, Japan

[73] Assignee: Shoei Kako Kabushiki Kaisha, Tokyo, Japan

[21] Appl. No.: 16,437

[22] Filed: Feb. 19,1987

[30] Foreign Application Priority Data

Dec. 17, 1986 [JP] Japan 61-300583

[51] Int. CI.* A42B3/02

[52] U.S. CI 2/424; 2/171.3

[58] Field of Search 2/424, 425, 410, 184.5,

2/171.3, 6

[56] References Cited

U.S. PATENT DOCUMENTS

4,081,865 4/1978 Bergee et al 2/425

4,115,874 8/1978 Hasegawa 2/425 X

4,498,202 2/1985 Yamamoto 2/424

4,538,303 9/1985 Schnitzler 2/424

4,586,200 5/1986 Poon 2/424 X

4,598,430 7/1986 Nava 2/424 X

4,612,675 9/1986 Broersma 2/424

4,697,289 10/1987 Nava 2/424 X

4,698,856 10/1987 Arai 2/425

4,704,746 11/1987 Nava 2/424

5,058,212 10/1991 Kamata 2/424

5,088,129 2/1992 Kamata 2/424 X

5,093,938 3/1992 Kamata 2/424

FOREIGN PATENT DOCUMENTS

0081210A2 6/1983 European Pat. Off. .

O081210A3 4/1985 European Pat. Off. .

7628170 12/1976 Fed. Rep. of Germany .

3214020A1 7/1983 Fed. Rep. of Germany .

3304652A1 9/1983 Fed. Rep. of Germany .

A helmet includes a cap body which is provided with a chin cover portion defining the lower edge of a window opening formed on the front surface of the cap body and a shield plate on the cap body for closing the window opening. The helmet is formed so that a shell of the cap body is divided at a position of the chin cover portion into an upper shell portion and a lower shell portion which are superposed and connected with each other with the lower shell portion positioned on the outer side of the upper shell portion, a distribution chamber communicating with the interior of the cap body through a plurality of jet ports is defined between the upper shell portion and the lower shell portion at the chin cover portion, and an air introducing port in communication with the distribution chamber and opening to the front surface of the chin cover portion is provided in the lower shell portion. The jet ports consist of two groups of which one opens to the rear surface of the chin cover portion and the other to the lower surface of the window opening.

10 Claims, 10 Drawing Sheets