Abstract: A helmet assembly includes a face shield and a single, center top mounting arrangement that operatively connects a center top location of the face shield to a center front mount on the helmet. The face shield can be raised and lowered about a pivot axis provided in the mounting arrangement between a tilted up, non-use position and a lowered, deployed position. The mounting arrangement can include a detent and two recesses, wherein the detent engages a first recess at a slightly forwardly displaced position to allow ventilation between the helmet and mandible and the face shield and a second recess at the tilted up, non-use position. The recess and detent engagement can be overcome by easy manual force acting on the face shield to reposition the face shield.

Abstract: An attachment system for attaching a mandible to a helmet. The system comprises a pair of attachment bases for holding a face shield to the helmet and for attaching to opposite sides of the helmet. The attachment bases each include a base plate covered by a body block. The base plate includes hooks for engaging an edge of the helmet. A strap assembly provides a pair of tightening straps, each engaging one attachment base. The tightening straps extend rearward and are connected together by a helmet band that extends over and around a portion of the helmet. The tightening straps each include a ratchet toothed strap body for adjusting a tension of the straps against the helmet.

Abstract: An assembly for mounting a visor on a helmet includes a visor assembly having a lens and a fastening element with a pair of latching prongs each with a resiliently displaceable prong end; a casing attached to the helmet and having a pair of channels each for receiving the a latching prong and a pair of fixtures, each fixture for engaging a respective prong end when displaced outwardly; and a lock having a pair of locking prongs, each locking prong being insertable into one channel from an opposite end as the latching prongs and each locking prong having a locking prong end that is positionable under a respective latching prong to prevent displacement of the latching prong end inwardly to disengage from the respective fixture.

Abstract: A reinforced composite material utility cart comprising a body including two side portions interconnecting an upper portion and a bottom portion adapted to secure ground contacting members thereto is provided, at least one of the portions including composite material and a reinforcement therein adapted to distribute a concentrated stress applied on the body to the composite material to prevent or reduce damages to the composite material. A method of manufacturing a reinforced composite panel adapted to be used in the construction of a utility cart adapted to be stowed in a bay of a galley of an airplane and locked in place with a lock disposed next to the bay in a position suitable to retain the utility cart in the bay by interfering with a reinforced edge of the utility cart is also provided.

Abstract: Is hereby provided a method of securing a plastic part to a composite structure, the method comprising providing a composite structure, performing at least one hole in the composite structure, providing a plastic part including a surface and at least one pin extending therefrom, the at least one pin being sized and designed to mate with the at least one hole to create a clamping force capable of temporarily securing the plastic part to the composite structure, applying bonding material between the surface and the composite structure to bond the surface to the composite structure, engaging the at least one pin with the corresponding at least one hole and adding pressure to engage the at least one pin with the corresponding at least one hole and spreading the bonding material between the plastic part and the composite structure, and curing the bonding material to permanently secure the additional part to the composite structure.

Abstract: A service cart adapted to be moved along an aisle is provided, the service cart comprising a body defining an upper portion, a lower portion and two opposed lateral portions respectively disposed between the upper and the bottom portions, the portions being interconnected with intervening curved portions to form a continuous wall thereof and at least one longitudinal opening; wheels attached to a lower portion of the body for supporting the body; and a closing device for substantially closing the longitudinal opening. A method of manufacturing a service cart and a service cart kit are also provided.

Abstract: A helmet attachment system is usable to attach a mandible or face or mouth guard. The helmet attachment system also comprises a pair of attachment bases, each arranged on a side of the helmet near to an ear covering of the helmet. The attachment bases each include a metal base plate covered by an attached body block. Each attachment base provides provisions for attaching opposite ends of a mandible to the bases. The metal base plate includes hooks for engaging an edge of the helmet. A pair of strap assemblies is provided, each strap assembly connected to one attachment base. The strap assemblies extend rearward and are connected to the back rail by a buckle member on the end of each strap assembly. The back rail includes a pair of buckle member-receiving slots. The straps assemblies and the hooks provided on the attachment bases secure the attachment bases to the helmet.

Abstract: A helmet attachment system is usable to attach a mandible or face or mouth guard. The helmet attachment system can attach other articles such as goggle straps and night vision devices. The helmet assembly includes a front rail that is substantially contiguous with side rails mounted to the helmet which extend rearward to be substantially contiguous with a back rail mounted on the helmet. The side rails are configured to provide attachment locations for further components, such as lights, electronics, communication equipment, etc.

Abstract: A modular utility cart comprising a body defining a door opening; wheels attached to a lower portion of the body for supporting the body; and a door operatively attached to the body and adapted to mate with the door opening, wherein the body is adapted to receive a utility module thereto is provided. A method of assembling a modular utility cart is also provided. A kit of utility cart and utility module(s) is equally provided herein.

Abstract: A hardware health evaluation module is associated with a hardware module or device and employs a linked list of error records to continually evaluate the state of the hardware module to determine whether or not it is currently operating with or without errors. In the event that the health evaluation module determines that the hardware module is not operating in an error free manner, it detects and stores, for a specified period of time, an indication of the error and associates this detected error or errors with one or more of the error records. The error records are designed to provide assistance in diagnosing the cause of a hardware error.

Abstract: An attachment system for attaching a face shield to a helmet. The system comprises a pair of attachment bases for holding a face shield to the helmet and for attaching to opposite sides of the helmet. The attachment bases each include a base plate covered by a body block. The base plate includes hooks for engaging an edge of the helmet. A strap assembly provides a pair of tightening straps, each engaging one attachment base. The tightening straps extend rearward and are connected together by a helmet band that extends over and around a portion of the helmet. The tightening straps each include a ratchet toothed strap body for adjusting a tension of the straps against the helmet.