Apparel – Guard or protector – For wearer's head
Patent
1997-12-23
1999-08-24
Neas, Michael A.
Apparel
Guard or protector
For wearer's head
21713, A42B 306
Patent
active
059408898
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a structure of a protective cap worn for protection of a head in construction works, engineering works, and other works.
BACKGROUND TECHNOLOGY
At a site of various types of work, or in a plant, a worker wears a protective cap on the worker's head for protection against the danger caused by a flying or dropping object or against danger of injuries when the worker drops from a height. But if the protective cap is worn for a long time especially in summer or during work accompanied by hard physical labor, the worker's head is steamed by perspiration. As a result, the works become uncomfortable to the worker, and in addition the work efficiency becomes lower.
To provide a protective cap with permeability, there has been disclosed a protective cap made from a net or a meshed and porous material molded into a multi-layered structure with the lacked portions arranged alternately in Japanese Utility Model Laid-Open Publication No.143736/1985. Also the model described in Japanese Utility Model Laid-Open Publication No.7832/1983 has a feature to provide a protective cap with permeability, and further Japanese Utility Model Laid-Open Publication No.94430/1989 discloses an air ventilating device to be set inside safety and protective tools of a working helmet, a vehicle helmet, safety shoes or the like.
However, these protective caps do not have a waterproof feature in rainy weather when worn outdoors.
Japanese Utility Model Publication No.20108/1967 discloses a helmet having permeability and a waterproof feature in rainy weather, but in this model, small holes are provided in a side section of a cap body, so that a flying or dropping object may come inside the cap body through the holes and also the strength is not sufficient, and for the reasons the model can not achieve the essential object of a helmet to protect a wearer's head. Further, when a worker wearing the cap works in a slouching posture, rain water comes into the helmet, so that the helmet can not be worn in rainy weather.
DISCLOSURE OF THE INVENTION
It is an object of the present invention to provide a protective cap which is excellent in the permeability and ventilating capability, and having a waterproof feature in rainy weather or the like, and having a considerable strength.
The protective cap according to the present invention comprises a cap body having an inner layer and an outer layer with a clearance therebetween, a number of air holes are provided in the inner and outer layers so that the air holes in the inner layer are displaced from those in the outer layer, in addition dams are provided around the air holes on a surface of the inner layer facing the outer layer, and spacers each comprising a vertical wall contacting the inner and outer layers are provided adjacent to the air holes.
Also the protective cap according to the present invention comprises a cap body having an inner layer and an outer layer with a clearance therebetween, a number of air holes are provided in the inner and outer layers so that the air holes in the inner layer are displaced from those in the outer layer, and a spacer comprising a vertical wall having a plurality of air flow holes thereon and contacting the inner and outer layers is provided around each of the air holes in said inner layer.
Also preferably a reinforcing ring is provided around each of the air holes in the outer layer.
The protective cap according to another aspect of the present invention comprises a cap body having an inner layer and an outer layer with a clearance therebetween, and concave strips and convex stripes each extending from the vertex in the radial direction are provided alternately on a surface of the inner layer facing the outer layer with air holes provided in the convex strips, and on the other hand air holes are formed in the outer layer at positions opposite to the concave strips on the inner layer. Preferably, the convex strips on the inner layer contact the outer layer partially.
Also the protective cap according to s
REFERENCES:
patent: 2112383 (1938-03-01), Sloan et al.
patent: 2144870 (1939-01-01), Bullard
patent: 3496854 (1970-02-01), Feldmann et al.
patent: 4700411 (1987-10-01), Kawasaki et al.
patent: 5010598 (1991-04-01), Flynn et al.
patent: 5345614 (1994-09-01), Tanaka
Neas Michael A.
Sea Raise Corporation Co., Ltd.
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