Abstract: An external ankle brace, including a rigid heel enclosure having a rear portion and a forward portion, wherein the rear portion is for receiving a heel portion of a shoe, the external ankle brace is configured to restrict movement of an ankle in a first direction and permit movement of the ankle in a second direction, wherein the external ankle brace is configured to be disposed on an exterior of the shoe and the shoe having the heel portion, a sole, a toe, a top, and oppositely disposed sides, the forward portion includes a medial sidewall and a lateral sidewall for collectively surrounding the sides of the shoe, the medial and lateral sidewalls being cantilevered from the rear portion of the rigid heel enclosure.

Abstract: An external ankle brace for restricting movement of an ankle in a first direction and permitting movement of the ankle in a second direction includes a rigid heel enclosure having a rear portion and a forward portion. A lateral upright extension is perpendicular to the rigid heel enclosure and is attached to the lateral sidewall. A medial upright extension is perpendicular to the rigid heel enclosure and is attached to the medial sidewall. At least a chosen one of the lateral and medial upright extensions is selectively pivotally attached to a corresponding lateral or medial sidewall and includes a pivot prevention feature configured to selectively prevent pivoting of the chosen one of the lateral and medial upright extensions with respect to the corresponding lateral or medial sidewall.

Abstract: Among other things, a mounting system is provided comprising at least one column having top and bottom ends and defining a vertical axis. Each column has internal wall portions which define at least one channel therein extending parallel to its vertical axis, an outer channel portion opening to its exterior surface, and an inner channel portion extending inwardly. Mounting brackets, each having a first detent member, are positionable within the channel, and engagable with the internal wall portions for fixing themselves against rotation. A longitudinal rail member is slidably positionable within the channel parallel to the vertical axis and has a first set of indexing means arranged along it. At least one support bracket has a main body portion and a second set of one or more indexing means thereon matable with the first set so as to releasably mount the support bracket on the column in indexed relation thereto.

Abstract: The invention comprises a panel for mounting on a support frame of a wall assembly for a workstation, comprising: a) a substantially planar core member having a front layer and a rear layer each attached to a central lattice structure to form a plurality of closed geometric cavities with the core member, b) a sound-deadening layer, overlying the front layer, and c) a decorative layer overlying the sound deadening layer.

Abstract: In order to stop a moving vehicle without injury to occupants, a vehicle barrier is provided having a pair of platforms disposed on opposite sides of a roadway, and a capture net extending across the roadway between the platforms. Each platform has a rotatably mounted spool attached to a different end of the net, and a dual acting extension-compression shock absorber pivotally mounted to the spool, such that when the force or energy of an impacting vehicle on the net is applied to the shock absorbers, via rotation of the spools. Rotation of spools operate the shock absorbers in compression, and if needed, in extension. In railroad crossing application, two of the vehicle barriers are provided on either side of the railroad tracks to prevent vehicles from crossing the railroad tracks.

Abstract: Among other things, a mounting system is provided comprising at least one column having top and bottom ends and defining a vertical axis. Each column has internal wall portions which define at least one channel therein extending parallel to its vertical axis, an outer channel portion opening to its exterior surface, and an inner channel portion extending inwardly. Mounting brackets, each having a first detent member, are positionable within the channel, and engagable with the internal wall portions for fixing themselves against rotation. A longitudinal rail member is slidably positionable within the channel parallel to the vertical axis and has a first set of indexing means arranged along it. At least one support bracket has a main body portion and a second set of one or more indexing means thereon matable with the first set so as to releasably mount the support bracket on the column in indexed relation thereto.

Abstract: A firefighting hood for protecting an individual from elements associated with a firefighting site. The firefighting hood includes a head portion, an inner bib portion, and an outer bib portion. The head portion is shaped to cover the individual's head, the inner bib portion extends downwardly from the head portion and is shaped to cover the individual's neck and a portion of the individual's torso, and the outer bib portion extends downwardly from the head portion and overlaps the inner bib portion such that the inner bib portion is positionable on an interior side of a protective garment while the outer bib portion is positionable over an exterior side of the protective garment to prevent objects from entering the protective garment.

Abstract: A shock-isolation structure for supporting a relatively light load on a supporting surface and having a plurality of spring units operable in both tension and compression oriented in a truss configuration with first ends of said spring units connected to the supporting surface for universal movement and with second ends of said spring units connected to the load for universal movement, with each of the spring units including a coil spring, an end cap, and a rod which extends outwardly through the end cap with a clearance fit in a nonextended position, a clevis body on the end of each of the rods, a groove in each of the end caps, and a ridge on each of the clevis bodies for mating engagement when the rod is in the nonextended position to thereby center each of the rods in each of the end caps.

Abstract: A protective headgear for a firefighter comprising a firefighting hood constructed from an aramid knit material, including a front opening for exposure of the firefighters face; an SCBA mask shaped to engage the firefighter's face; a fastening system for attaching the SCBA mask to the firefighting hood along the perimeter of the mask such that the front opening of the hood is positioned within the perimeter of the mask, assuring that at least the firefighter's mouth will be within the mask when worn; and a retainer attached to opposite sides of the mask and adapted to extend around the back of the firefighter's head such that the strap holds the mask snugly against the firefighter's face. Preferably, the fastening system attaches the mask to the firefighting hood at a plurality of points along the perimeter of the mask, such that when the hood and face mask system is donned by the firefighter, there is no skin exposed between the hood and the mask.

Abstract: A motion-magnifying seismic shock-absorbing construction for placement in the frame of an extremely stiff building structure wherein there is a relatively small horizontal movement between the floors of the building in response to a seismic event including a first link connected to the structure and having a shock-absorbing member therein, a plurality of additional links connected between the structure and the first link to transmit to the first link and to the shock-absorbing member therein the relatively small horizontal movement between the floors of the structure due to the seismic event, and the plurality of links including a motion-magnifying linkage for magnifying the aforementioned relatively small relative movement so that a magnified movement is applied to the shock-absorbing member. A building structure containing a plurality of the above motion-magnifying shock-absorbing constructions.

Abstract: A hydraulic damper including an inner cylinder, an outer cylinder, a space between the inner and outer cylinders, first and second end walls in the inner cylinder, a piston rod extending only through the first end wall and supported therein by a ball bearing assembly, a first portion of the piston on one side of the first end wall and within the inner cylinder, a second portion of the piston on the opposite side of the first end wall and external to the inner cylinder, a piston head on the first portion of the piston rod within the inner cylinder, a first chamber in the inner cylinder between the piston head and the first end wall, a second chamber in the inner cylinder between the piston head and the second end wall, an accumulator in communication with the second chamber, a fluid-containing seal between the first end wall and the second portion of the piston rod, and a closed fluid circuit between the accumulator and the fluid-containing seal through the space between the inner and outer cylinders.

Abstract: A motion-magnifying seismic shock-absorbing construction for placement in the frame of an extremely stiff building structure wherein there is a relatively small horizontal movement between the floors of the building in response to a seismic event including a first link connected to the structure and having a shock-absorbing member therein, a plurality of additional links connected between the structure and the first link to transmit to the first link and to the shock-absorbing member therein the relatively small horizontal movement between the floors of the structure due to the seismic event, and the plurality of links including a motion-magnifying linkage for magnifying the aforementioned relatively small relative movement so that a magnified movement is applied to the shock-absorbing member. A building structure containing a plurality of the above motion-magnifying shock-absorbing constructions.

Abstract: A damper including a cylinder, opposite end walls in the cylinder, an elongated shaft mounted for axial movement in seals in the end walls, a piston head on the shaft between the end walls, fluid-tight bellows mounted in sealed relationship between the shaft and the end walls, fluid in the cylinder and in the bellows, and flexible washers mounted between the shaft and the end walls for maintaining the shaft centered in the seals. The damper can function as a snubber when it utilizes a valved piston head.

Abstract: A self-centering spring assembly which is a column located between first and second vertically spaced frame members including a first end on the column movably secured to the first frame member, a second end on the column secured to the second frame member, a member having a first end movably mounted on the column and a second end in movable engagement with the first frame member, and a liquid spring connected between the second end of the movable member and the column.

Abstract: A toggle linkage for incorporation into a frame of a structure, such as a building, including a first link having a shock absorber therein, a first end on the first link connected to a first area of the frame, a second link having a first end connected to a second area of the frame remote from the first area, a second end on the second link, a third link having a first end connected to a third area on the frame remote from the first and second areas, and a second end on the third link. The second ends of the second and third links are connected to each other by a metal plate structure which has a bending axis, and the second end of the first link is pivotally connected to the second ends of the second and third links along an axis which is coincident with the bending axis of the metal plate structure.

Abstract: A self-centering spring assembly including a liquid spring having a cylinder and a piston, a casing slidably mounted on the cylinder and having the outer end of the piston connected thereto, a first pivotal connector between an extension of the cylinder and a bracket member and a second pivotal connection between a member extending laterally of the casing and an external member, the second pivotal connection lying outwardly of the first pivotal connection.The foregoing basic structure plus a liquid spring axially mounted thereon. The foregoing basic structure plus a resilient rubber sleeve mounted between the liquid spring and an external sleeve which supports a member.

Abstract: A toggle linkage for incorporation into a frame of a structure, such as a building, including a first link having a shock absorber therein, a first end on the first link connected to a first area of the frame, a second link having a first end connected to a second area of the frame remote from the first area, a second end on the second link, a third link having a first end connected to a third area on the frame remote from the first and second areas, a second end on the third link, a second end on the first link connected proximate the second end of the second link, and the second ends of the second and third links being connected to each other by a metal plate which is welded therebetween and which flexes in the direction of its thickness and not in the direction of its width so as to maintain the longitudinal axes of the second and third links in the same plane when the toggle linkage is activated by a seismic event as before the toggle linkage was activated.

Abstract: A seismic shock isolator and method of strengthening structures against seismic shock is disclosed. The shock isolator includes a cylinder having a damping chamber and an accumulator chamber and a piston movable into the damping chamber. The damping chamber can contain compressible liquid or incompressible liquid. The piston has a damping head and a first control orifice, and the accumulator chamber is separated from the damping chamber by a wall having a second control orifice having a higher exponent than the first control orifice. Movement of the piston into the damping chamber creates a combination of damping and stiffening having a spring component. When the isolator has compressible liquid therein, the spring and stiffening is produced by a compression of the liquid. When the isolator contains an incompressible liquid, the stiffening and spring component are obtained by a yielding of a column which movably supports the wall which divides the damping chamber from the accumulator chamber.

Abstract: The present invention is a protective firefighter hood in which a pocket is formed to protect the required garment label which must be attached to the hood. The hood includes a head portion shaped to cover at least a wearer's head and an optional bib portion attached to and extending from the head portion to cover at least a wearer's neck. In one embodiment, a gap is formed between the stitching that connects the inner and outer layers of the head portion, adjacent the label. Accordingly, the label can be stored so that it does not contact the wearer, by inserting it through the gap in the stitching. In an alternative embodiment, the hood is provided with a patch pocket on the head portion or bib portion adjacent the label, so that the label can be placed alternatively within the pocket away from contacting the wearer or removed from the pocket to be viewed.

Abstract: A hydraulic damper including a cylinder and a piston rod and a seal for the piston rod and a metal bellows fixedly mounted between the cylinder and the piston rod for accepting leakage of hydraulic fluid from the cylinder, and a spring arrangement encircling the cylinder and piston rod, the spring arrangement consisting of two equal length, equal size springs wound in opposite directions with their outer ends fixed to the cylinder and piston rod and having their inner ends bearing against each other to eliminate the application of torque from the springs to the bellows.