Magician Harry Houdini patented a "Diver's Suit" enabling the wearer to "quickly divest himself of the suit while being submerged and to safely escape and reach the surface of the water."
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| Number | Title | Issue Date |
| 4484364 | Shock attenuation system for headgear A shock attenuation system for headgear having an outer protective shell, the system comprising a liner adapted to be secured to the internal surface of the shell, the liner comprising a series of tubes of elastomeric material extending with their axes ge... | 11/27/1984 |
| 4468817 | Perspiration band for headgear This perspiration band provides for more comfortable wearing and non-allergic reaction for its user, when attached to the existing band of a safety hat or other headgear. Primarily, it consists of a washable terrycloth strip, which includes snap fasteners... | 09/04/1984 |
| 4443891 | Bicycle helmet This invention relates to a helmet for cyclists, skateboard runners and roller skaters. It comprises a shell of flexible and hard plate-shaped material and a damping means attached inside the shell. The shell in its plane has the form of an I, with extend... | 04/24/1984 |
| 4432099 | Individually fitted helmet liner An individually fitted helmet liner includes a plurality of superposed contacting layers, each of which consists of a thermoplastic sheet formed with an array of pockets which are open and unfilled to allow their deformation in response to compressive con... | 02/21/1984 |
| 4345338 | Custom-fitted helmet and method of making same A custom-fitted helmet in which a preformed elastomer sack containing a resin-bead composite adapted to rigidify in response to mechanical deformation accommodates a single rigid outer shell to various individual head sizes. The underside of the sack is f... | 08/24/1982 |
| 4345336 | Head protecting headwear Head protecting headwear in the form of a helmet is disclosed. The helmet includes a resilient, plastic shell which defines a head receiving opening and which has a protective peak. A sweatband is fastened to the shell, adjacent the head receiving opening... | 08/24/1982 |
| 4321433 | Waterproof helmet encasing electronic components A helmet is disclosed herein having a three-piece construction comprising a liner of soft, resilient material adapted to reside adjacent the head of the user, an intermediate shell which lies over the inner layer and which mounts component parts constitut... | 03/23/1982 |
| 4290149 | Method of making an individually fitted helmet An individualized helmet assembly and method of and apparatus for making the same in which a helmet liner having a plurality of apertures is removably secured inside a fixture in the form of a rigid template simulating a helmet shell and having apertures ... | 09/22/1981 |
| 4287613 | Headgear with energy absorbing and sizing means A headgear comprising a helmet shell and a combination of energy-absorbing and sizing means mounted on the inside surface of the shell. The combination includes a crown-engaging structure either in the form of a web suspension or an air-inflatable means. ... | 09/08/1981 |
| 4286339 | Fireman's helmet with energy absorbing liner Safety headgear includes an impact attenuating suspension system having a cradle of webbing and a non-resilient foam liner.... | 09/01/1981 |
| 4282610 | Protective headgear A protective headgear comprising a helmet and a pad assembly. The pad assembly comprises a pad of foam material having an integral densified layer defining front and side surfaces of the pad assembly and forming a tear-resistant cover for the pad. The pad... | 08/11/1981 |
| 4239106 | Individually fitted helmet and method of and apparatus for making the same An individualized helmet assembly and method of and apparatus for making the same in which a helmet liner having a plurality of apertures is removably secured inside a fixture in the form of a rigid template simulating a helmet shell and having apertures ... | 12/16/1980 |
| 4223409 | Helmet provided with shockproof and ventilative device This invention relates to a helmet provided with shockproof and ventilative devices, the helmet being encircled with a plurality of plastic strips along its outer wall, and a plurality of corresponding plastic or rubber tubes along its inner wall, the upp... | 09/23/1980 |
| 4209858 | Safety helmet A crash helmet such as for use by motorcylists having an inner shell of shock-absorbing material and an outer shell and visor which are constructed as a single integral piece of transparent hard plastic material which fittingly surrounds the greater part ... | 07/01/1980 |
| 4136226 | Impact-absorbing laminate and method of manufacture thereof An impact-absorbing laminate is provided comprising a rigid support layer and an impact-absorbing foam layer fused to at least one surface of the support layer, the impact-absorbing foam layer having a relatively high density outer self-skin on the surfac... | 01/23/1979 |
| 4101983 | Enveloping helmet of composite structure A protective helmet for use particularly by the rider of a two-wheeled vehicle, having an upper rigid shell joined to a semi-rigid shell of plastic material, the latter having extensions over the regions of a wearer's ears. An interior shock absorbing ele... | 07/25/1978 |
| 4081865 | Protective helmet and ventilating system therefor A protective head gear or helmet having a ventilating system for cooling the interior of the helmet. Air inlet and outlet openings in the front and neck portions respectively of the helmet and air passages connected to the openings communicate with the in... | 04/04/1978 |
| 4054953 | Crash helmet There is described a crash helmet which comprises at least one air inlet provided in that helmet area over which sweeps the air and so arranged as to canalize the air inside the helmet, means to distribute the air inside the helmet and at least one openin... | 10/25/1977 |
| 4044399 | Safety helmet with individualized head-contoured inter-liner A substantially rigid dome-shaped shell encloses a deformable cap-like headpiece of uniform thickness. The headpiece conforms to the contour of the wearer's head and cooperates with the shell to define a dome-shaped cavity which is sealed around its botto... | 08/30/1977 |
| 4024586 | Headgear suspension system A selectable plurality of removable pads are placed one on top of another re and aft between a rigid helmet and an inner flexible helmet for fitting and suspending a single size of the rigid helmet to varying head contours. The pads are comprised of venti... | 05/24/1977 |
| 4006496 | Safety helmet A lightweight safety helmet for use by the operator of a motorcycle, or the like. The helmet meets all present day standards and specifications as well as the more strigent standards and specifications proposed by the construction of a single shell helmet... | 02/08/1977 |
| 3992721 | Safety helmet with individualized head-contoured inter-liner A substantially rigid dome-shaped shell encloses a deformable cap-like headpiece of uniform thickness. The headpiece conforms to the contour of the wearer's head and cooperates with the shell to define a dome-shaped cavity which is sealed around its botto... | 11/23/1976 |
| 3956773 | Custom fitted, light weight, air conditioned protective helmet A custom fitted pilot's helmet includes a liner attached within the confi of a helmet shell having numerous pressure relief holes over its entire surface. The liner includes a flexible sheet on one side of which is formed a plurality of elastic cell pair... | 05/18/1976 |