Apparel – Guard or protector – For wearer's head
Patent
1977-02-28
1977-11-01
Guest, Alfred R.
Apparel
Guard or protector
For wearer's head
A42B 302
Patent
active
040558606
ABSTRACT:
A safety cap has an energy absorbing suspension including crown straps for supporting engagement with the crown of a wearer's head connected to elastically deformable, rupturable and controlled plastically deformable portions of connecting means attached to anchor means in the shell of the cap. The connecting means have end portions adapted to be attached to and wedgingly engage the anchor means. The shock or impact of a blow against the shell suspended on the resisting wearer's head is partially absorbed initially by a wedging action which continues until the end portions are fully seated relative to the anchor means. Further, loading causes the crown straps to pull against, deform and bend energy absorbing portions of the connecting means into adjoining apertures of predetermined size and shape. Finally, at a predetermined force, the bending moments at opposite ends of the energy absorbing portions exceed the tensile yield strength of the material and causes the portions to rupture. The failure and plastic deformation thereof is thereafter controlled and limited by allowing them to progressively or successively bottom against control means about the apertures. An adjustable and removable headband including a sweatband is attached to and supported by the connecting means.
REFERENCES:
patent: 2921318 (1960-01-01), Voss et al.
patent: 2946063 (1960-07-01), Boyer
patent: 3026523 (1962-03-01), Bowers et al.
patent: 3154788 (1964-11-01), Simpson
patent: 3192536 (1965-07-01), Benner
patent: 3237201 (1966-03-01), Morgan
patent: 3422459 (1969-01-01), Bowers
patent: 3555560 (1971-01-01), Rascke
patent: 3909846 (1975-10-01), Zahn
Fred Walter
Guest Alfred R.
Norton Company
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