Abstract: Footwear for improving the visibility of the wearer uses a circuit including a mechanically operated pressure switching mechanism, disposed in the footwear, to turn a lighting system off and on. The switch is responsive to pressure from the foot of the wearer. When a wearer raises a foot from the ground, the lighting system is activated. When the foot is returned to the ground, the lighting system is deactivated. The system may be disabled by removing a source of power from the circuit, or through the provision of a mechanically operable deactivation mechanism.

Abstract: An athletic shoe (20) having an inflatable air bladder (52) integrated into the design and construction of the shoe, and apparatus (50) for inflating the air bladder, as well as apparatus (82) for sensing and indicating the pressure in the bladder, all incorporated into the design of the shoe.

Abstract: A device for use in footwear for producing pulsed light can be disposed in the sole of a shoe. The device includes a circuit having a switch responsive to pressure from the wearer's foot that activates a lighting circuit for a predetermined period of time or until the switch is operated again. The lighting circuit produces a pulsed light visible exteriorly of the sole of the shoe. The circuit can be controlled to operate either when the wearer's foot is brought into contact with, or when it is removed from, the ground.

Abstract: An athletic shoe (20) includes a sole (22), an upper (25), and a tongue (26), as well as fasteners (28), such as shoelaces. Incorporated into the sole (22) of the athletic shoe (20) is a receptacle (30) for receiving and retaining a plug-in module (32) in a slide-in, releasably locking arrangement. The plug-in module (32) preferably includes a battery (62), a light emitting device (54), and electrical circuit elements (58, 60, 72) arranged to selectively connect the battery (62) to the light emitting device (54).

Abstract: An athletic shoe (20) includes a sole (22), an upper (25), and a tongue (26), as well as fasteners (28), such as shoelaces. Incorporated into the sole (22) of the athletic shoe (20) is a receptacle (30) for receiving and retaining a plug-in module (32) in a slide-in, releasably locking arrangement. The plug-in module (32) preferably includes a battery (62), a light emitting device (54), and electrical circuit elements (58, 60, 72) arranged to selectively connect the battery (62) to the light emitting device (54).

Abstract: Lightweight, inexpensive footwear sole components (14, 18), comprising a midsole portion (14) and an outsole portion (18), are formed by a method that eliminates the need for adhesively attaching the two portions to each other, and comprises the steps of 1) Forming the midsole portion (14) to have a lower surface (17) and at least one opening (26) extending into it through the lower surface (17); 2) Forming the outsole portion (18) on the lower surface (17) of the midsole portion (14) such that the outsole portion has an upper part (28) extending into the opening (26) in the midsole portion; and, 3) Forming a mechanical attachment device (22) between the outsole portion (18) and the midsole portion (14) on an upper end (19) of the outsole portion (18).

Abstract: A sports sandal includes sole and a partial upper. The partial upper includes a plurality apertures that accommodate a lace therethrough. The lace tension is selectively adjustable and the partial upper is flexible and contoured to fit snugly about the wearer's foot. The use of flexible fabrics enable the sports sandal to be used in a wider variety of athletic activities, while the adjustable lacing system adds to wearer's comfort.

Abstract: According to the timer device of the invention, a time-setting part supplied from the power supply sets up the period from the opening instance of said switch to the instance that the magnitude of current in the capacitor comes down under a specified value, as said current-supply period, and a current-controlling part allows the current to flow from said power supply to said load during said current-supply period determined by said time-setting part, and a switch makes the time-setting part operate at opening instance of the switch.Therefore, the timer device of the invention can reduce the loss of power during the waiting period. And when the magnitude of the current flowing through the time-setting part and the current-controlling part in open-state of the switch, in order that the decrement of the current in the current-controlling part makes the current in the time-setting part rapidly decrease, these parts are interconnected with each other.

Abstract: An inertially responsive lighting system (10) for footwear has at least one electric light source (12), a battery (16), circuit means (22) to connect the battery to the light, and electro-mechanical switching means (24) disposed in the circuit means that are responsive to an inertial impulse force acting on the footwear to cause the light to flash on and off for a brief interval after the force is applied.

Abstract: A replaceable shoe heel spring assembly allows the wearer of a shoe to selectively change the energy absorption and return characteristics of the heel portion of the shoe by changing shoe heel spring cartridges. The wearer activates a release mechanism located on an exterior surface of the shoe and a cartridge containing a shoe heel spring is ejected from a location in the mid-sole of the shoe. Another shoe heel spring cartridge having different energy absorption and return characteristics can then be inserted into the mid-sole. The cartridge is securely held in the mid-sole by a locking mechanism connected to the release mechanism. The shoe heel spring is provided with a cover which matches the material of the mid-sole. The cover assists in preventing debris from entering the mid-sole. The selectable range of energy absorption and return characteristics is limited only by the number of cartridges available.

Abstract: An athletic shoe (20) having an inflatable air bladder (52) integrated into the design and construction of the shoe, and apparatus (50) for inflating the air bladder, as well as apparatus (82) for sensing and indicating the pressure in the bladder, all incorporated into the design of the shoe.

Abstract: Footwear for improving the visibility of the wearer includes a processing circuit that responds to operation of switch to turn a lighting system disposed in the footwear off and on. The switch is responsive to pressure from the foot of the wearer. When a wearer raises a foot from the ground, the lighting system is activated. When the foot is returned to the ground, or at the expiration of a predetermined period of time, the lighting system is deactivated.

Abstract: An adjustable shoe heel spring and stabilizer device provides the wearer of a shoe the ability to adjust the energy absorption and return characteristics of the shoe to suit their particular needs. An operable adjustment device is located on an exterior surface of the shoe. The wearer operates the adjustment device to selectively position a fulcrum at a desired location relative to upper and lower members of a spring mechanism disposed within the mid-sole of the shoe. The position of the fulcrum defines the energy absorption and return characteristics for the shoe. An indicator is provided for displaying to the wearer the relative position of the fulcrum, and hence the energy absorption and return setting for the shoe.

Abstract: A speed closure (100) for footwear (10) comprises an elastic instep strap (110) having ends (111, 112) on opposite sides of the wearer's foot. The ends of the strap terminate in pulleys (114, 115) interleaved between the tongue (28) and respective ones of the flaps of the shoe for independent, sliding movement therebetween. A foldable fastening tab (120) is moveably attached to the tongue of the shoe. A tensioning line (140) having ends joined to form a continuous loop is threaded in an ordered sequence through eyelets (34) in the flaps, eyelets (127) in the tab, and the line pulleys, such that the line does not pass through any pulley more than once, and through any eyelet more than twice, and such that the line does not cross over itself. A cowl (150) is disposed over the instep of the shoe to cover portions of the instep opening of the shoe, the tongue, and the tab. The cowl has a top edge (151) and sides that lap past the flaps and attach to respective sides of the shoe.

Abstract: A thin, heel-sized plate formed of a composite sandwich of thermoplastic resin and carbon-glass fiber cloth has a pair of upwardly-flanged lateral edges, front and rear ends, and an integral, rearwardly-extending, upwardly-inclined, vertically-acting spring member appending from it. The device is encapsulated within the resilient material of the heel portion of the midsole of an athletic shoe such that the spring member is disposed below the calcaneus of the wearer's foot. The midsole is relieved in an area below the spring member to permit it to bend downward freely in response to heel-imparted forces. A "snubber" or stopper bushing can be molded into the outsole of the shoe to limit the maximum deflection of the spring member.