Abstract: A protective sports guard can include a lower component that includes a hard shell outer layer attached atop a flexible padding layer; an upper component that includes a hard shell outer layer attached atop a flexible padding layer; a central component attached to and straddling the lower component and the upper component and that includes a hard shell outer layer; and an elongate strap. The elongate strap can be fixedly attached at one end to the flexible padding layer of the lower component, releasably and variably attached at another end to itself, and configured to wrap around the lower component in excess of one full revolution and to envelop and compress a human body part for a compression fit.

Abstract: A protective sports guard can include a lower component that includes a hard shell outer layer attached atop a flexible padding layer; an upper component that includes a hard shell outer layer attached atop a flexible padding layer; a central component attached to and straddling the lower component and the upper component and that includes a hard shell outer layer; and an elongate strap. The elongate strap can be fixedly attached at one end to the flexible padding layer of the lower component, releasably and variably attached at another end to itself, and configured to wrap around the lower component in excess of one full revolution and to envelop and compress a human body part for a compression fit.

Abstract: A protective shin guard includes a floating knee section attached to a shin section, both sections being formed of a hard outer shell overlying a non-rigid inner padding layer. The hard outer shell of the shin section is defined by a unique pattern of flexible hinges. An alternate embodiment that uses pliable transition inserts is also described. In addition, the shin guard is attached to the leg by a novel strap system including two elastic calf straps and one greater-than 360 degree behind-the-knee compression strap that combine to provide maximum protection to the user's shin and knee while maintaining flexibility.

Abstract: A protective digit shield for a protective sports glove, the shield having a hard chassis portion and an energy absorbing portion forming a hinge. The chassis portion provides an arcuate channel in which the thumb/digit is received. The chassis is segmented along the longitudinal axis to provide a proximal portion and a distal portion corresponding generally with the proximal and distal phalanx bones of the thumb/digit. A resilient, energy absorbing element along the channel provides separation between the chassis and forms a living hinge such that the chassis can rotate. The energy absorbing element may also include a damping element along opposing edges at the segmented joint to absorb and dissipate forces and prevent hyperextension. In an alternate embodiment, the energy absorbing element is replaced with a connection cable for connecting the portions of the chassis.

Abstract: A protective shin guard includes a floating knee section attached to a shin section, both sections being formed of a hard outer shell overlying a non-rigid inner padding layer. The hard outer shell of the shin section is defined by a unique pattern of flexible hinges. An alternate embodiment that uses pliable transition inserts is also described. In addition, the shin guard is attached to the leg by a novel strap system including two elastic calf straps and one greater-than 360 degree (360+) behind-the-knee compression strap that combine to provide maximum protection to the user's shin and knee while maintaining flexibility.

Abstract: A protective digit shield for a protective sports glove, the shield having a hard chassis portion and an energy absorbing portion forming a hinge. The chassis portion provides an arcuate channel in which the thumb/digit is received. The chassis is segmented along the longitudinal axis to provide a proximal portion and a distal portion corresponding generally with the proximal and distal phalanx bones of the thumb/digit. A resilient, energy absorbing element along the channel provides separation between the chassis and forms a living hinge such that the chassis can rotate. The energy absorbing element may also include a damping element along opposing edges at the segmented joint to absorb and dissipate forces and prevent hyperextension. In an alternate embodiment, the energy absorbing element is replaced with a connection cable for connecting the portions of the chassis.

Abstract: Apparatus for the detection of ground leakage in a normally ungrounded DC system includes a DC power supply and conductors from the supply for supplying power to a load connected to the DC system. There is an indicator connected between the DC system and a ground point such that a ground leakage in the system closes a circuit to activate the indicator. With such activation, a pulser periodically interrupts the circuit to effectively generate an interrupted ground fault signal. Such signal is detected by a sensor located relative to the DC system such that an interrupted ground signal detected by the sensor locates the ground fault. Noise introduced into the pulse signal by the periodic interruption of the circuit during the ground fault occurrence is suppressed by the sensor means.

Abstract: Apparatus for the detection of ground leakage in a normally ungrounded DC system includes a DC power supply and conductors from the supply for supplying power to a load connected to the DC system. There is an indicator connected between the DC system and a ground point such that a ground leakage in the system closes a circuit to activate the indicator. With such activation, a pulser periodically interrupts the circuit to effectively generate an interrupted ground fault signal. Such signal is detected by a sensor located relative to the DC system such that an interrupted ground signal detected by the sensor locates the ground fault. Noise introduced into the pulse signal by the periodic interruption of the circuit during the ground fault occurrence is suppressed by the sensor means.

Abstract: Apparatus for the detection of ground leakage in a normally ungrounded DC system includes a DC power supply and conductors from the supply for supplying power to a load connected to the DC system. There is an indicator connected between the DC system and a ground point such that a ground leakage in the system closes a circuit to activate the indicator. With such activation, a pulser periodically interrupts the circuit to effectively generate an interrupted ground fault signal. Such signal is detected by a sensor located relative to the DC system such that an interrupted ground signal detected by the sensor locates the ground fault. Noise introduced into the pulse signal by the periodic interruption of the circuit during the ground fault occurrence is suppressed by the sensor.