1
Nelson Kraemer, Ralph Infusino: Integrated pump mechanism and inflatable liner for protective. Riddell, Hopgood Calimafde Kalil Blaustein & Judlowe, November 23, 1993: US05263203 (122 worldwide citation)

In accordance with one aspect of the present invention is a specific, illustrative embodiment of an integrated pump and inflatable liner assembly which comprises a hollow inflatable member for the reception and storage of fluid, the inflatable member having a selected configuration so as to line the ...


2
James C Wingo Jr, Nelson Kraemer: Protective helmet and liner. Riddell, Ben D Tobor, July 30, 1991: US05035009 (108 worldwide citation)

A protective helmet and liner therefor includes a sheet of sound deadening material which fits between impact force absorbing pad structures disposed on the interior of the protective helmet.


3
Joseph J Crisco III, Richard M Greenwald: System and method for measuring the linear and rotational acceleration of a body part. Riddell, Wallenstein Wagner & Rockey, November 30, 2004: US06826509 (105 worldwide citation)

A system and method for determining the magnitude of linear and rotational acceleration of and direction of impact to a body part, such as a head includes positioning a number of single-axis accelerometers proximate to the outer surface of the body part. A number of accelerometers are oriented to se ...


4
Ralph Infusino: Inflatable liner for protective headgear. Riddell, Hopgood Calimafde Kalil Blaustein & Judlowe, January 5, 1993: US05175889 (86 worldwide citation)

An inflatable liner for protective headgear comprising, in accordance with one aspect of the present invention, a reinforced hollow strip for the reception and storage of fluid, the strip having a selected size so as to line the protective headgear and partially encircle a user's head, a reinforced ...


5
Morgan Gerard E: Padding structure. Riddell, McDougall Hersh & Scott, May 13, 1975: US3882547 (86 worldwide citation)

A padding structure for use in helmets and other athletic equipment. The structure is characterized by a resilient padding arrangement which is adapted to be manufactured in different sizes whereby the equipment can be fit to the requirements of different wearers, and the padding structure is also c ...


6
Arthur M Schulz: Headgear with energy absorbing and sizing means. Riddell, McDougall Hersh & Scott, September 8, 1981: US04287613 (83 worldwide citation)

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. These pad structures comprise curved assembli ...


7
Thad M Ide, Ralph J Infusino, Nelson Kraemer, Christopher R P Withnall, Timothy D Bayne: Football helmet. Riddell, Wallenstein Wagner & Rockey, August 30, 2005: US06934971 (69 worldwide citation)

A new football helmet includes: a jaw flap attached to the ear flap of the helmet, and the jaw flap overlies the sides of the lower jaw of football player; and a face guard connector which includes a shock absorbing member.


8
James C Wingo Jr: Shock absorbing pad structure for athletic equipment. Riddell, Ben D Tobor, January 22, 1991: US04985931 (66 worldwide citation)

A shock absorbing pad structure for athletic equipment, such as shoulder pads, has a foam member, having an undulated configuration formed by a plurality of elevations and dperessions, arranged in a staggered relationship with respect to one another, disposed within a flexible, substantially air imp ...


9
Thad M Ide, Ralph J Infusino, Nelson Kraemer, Christopher R P Withnall, Timothy D Bayne: Sports helmet. Riddell, McDermott Will & Emery, July 10, 2007: US07240376 (63 worldwide citation)

The present invention provides a sports helmet, such as a football, hockey, lacrosse or baseball helmet. The helmet includes a shell having an outer surface, a front region, a rear region, and two side regions. A jaw flap extends from each ear flap towards the front region of the shell, wherein the ...


10
Richard M Greenwald, Jeffrey J Chu: Power management of a system for measuring the acceleration of a body part. Riddell, McDermott Will & Emery, April 28, 2009: US07526389 (59 worldwide citation)

The present invention provides an apparatus and method for determining the magnitude of linear and rotational acceleration of an impact to a body part. The apparatus can be used with protective sports equipment, such as a sports helmet, wherein the apparatus includes a battery, a number of accelerom ...