Abstract: A solenoid coil assembly for hazardous environments comprises a solenoid coil and an enclosure entirely filled with encapsulation material. The encapsulation material leaves zero or almost zero volume in the enclosure for hazardous material to accumulate in any amount that could explode. This allows the solenoid coil assembly to be constructed without the usual industry standard flame paths. Additionally, the enclosure may be made of physically rigid and strong material such as metal or the like to better withstand harsh and corrosive conditions within hazardous environments without being explosion proof. The walls of such an enclosure need only have a moderate thickness and weight relative to enclosures that are explosion proof, as there is no meaningful risk of an explosion occurring within the enclosure. The combination of a rugged exterior and a zero-volume interior allows the solenoid coil assembly to reduce weight and cost while providing superior environmental protection.

Abstract: A solenoid coil assembly for hazardous environments comprises a solenoid coil and an enclosure entirely filled with encapsulation material. The encapsulation material leaves zero or almost zero volume in the enclosure for hazardous material to accumulate in any amount that could explode. This allows the solenoid coil assembly to be constructed without the usual industry standard flame paths. Additionally, the enclosure may be made of physically rigid and strong material such as metal or the like to better withstand harsh and corrosive conditions within hazardous environments without being explosion proof. The walls of such an enclosure need only have a moderate thickness and weight relative to enclosures that are explosion proof, as there is no meaningful risk of an explosion occurring within the enclosure. The combination of a rugged exterior and a zero-volume interior allows the solenoid coil assembly to reduce weight and cost while providing superior environmental protection.

Abstract: A method of sealing coil leads during encapsulation by placing a lead of a coil in a tube, such that there remains a gap between the lead and the tube; placing the coil in a mold such that the gap remains open to an environment surrounding the mold; and injecting encapsulation material into the closed mold in a liquid state under pressure, thereby causing the material to flow through the gap toward the environment. Injecting encapsulation material into the mold may be done at a rate, temperature, and/or environmental temperature to cause the material to solidify before passing through the gap into the environment. In any case, there is no need to seal the mold to the leads. Each lead of the coil may be placed into an individual tube and/or the tubes may be is formed within a single sleeve.

Abstract: A method of sealing coil leads during encapsulation by placing a lead of a coil in a tube, such that there remains a gap between the lead and the tube; placing the coil in a mold such that the gap remains open to an environment surrounding the mold; and injecting encapsulation material into the closed mold in a liquid state under pressure, thereby causing the material to flow through the gap toward the environment. Injecting encapsulation material into the mold may be done at a rate, temperature, and/or environmental temperature to cause the material to solidify before passing through the gap into the environment. In any case, there is no need to seal the mold to the leads. Each lead of the coil may be placed into an individual tube and/or the tubes may be is formed within a single sleeve.

Abstract: A valve assembly comprising a pilot valve; a solenoid; and a main valve, the main valve having an actuator in communication with a pressure control; the pilot valve may facilitate opening the main valve in proportion to an energized level of the solenoid. The solenoid may move the first disc to isolate the inlet port from the pressure control and/or move the second disc to communicate the outlet port with the pressure control. The actuator may move the second disc to isolate the outlet port from the pressure control and/or move the first disc to communicate the inlet port with the pressure control. The pilot valve may isolate both the inlet port and the outlet port from the pressure control when the pilot valve experiences forces in equilibrium from the solenoid and the actuator.

Abstract: A valve assembly comprising a pilot valve; a solenoid; and a main valve, the main valve having an actuator in communication with a pressure control; the pilot valve may facilitate opening the main valve in proportion to an energized level of the solenoid. The solenoid may move the first disc to isolate the inlet port from the pressure control and/or move the second disc to communicate the outlet port with the pressure control. The actuator may move the second disc to isolate the outlet port from the pressure control and/or move the first disc to communicate the inlet port with the pressure control. The pilot valve may isolate both the inlet port and the outlet port from the pressure control when the pilot valve experiences forces in equilibrium from the solenoid and the actuator.

Abstract: The present invention is a piece of exercise equipment designed to train and condition sport-specific muscle groups used during a swinging motion, as in golf. It is comprised of a mechanical linkage, with at least six free-moving joints, so that it effectively simulates a wide variety of golf swings without the need for complex adjustments and provides for smooth and even distribution of resistance to the various muscle groups involved in the swinging motion. It includes a resistance mechanism, such as a pulley system linked to two one-way hydraulic cylinders. This allows a user to simultaneously practice swing form and technique while also strengthening and conditioning the specific muscles needed for the sport.

Abstract: The present invention is a piece of exercise equipment designed to train and condition sport-specific muscle groups used during a swinging motion, as in golf. It is comprised of a mechanical linkage, with at least six free-moving joints, so that it effectively simulates a wide variety of golf swings without the need for complex adjustments and provides for smooth and even distribution of resistance to the various muscle groups involved in the swinging motion. It includes a resistance mechanism, such as a pulley system linked to two one-way hydraulic cylinders. This allows a user to simultaneously practice swing form and technique while also strengthening and conditioning the specific muscles needed for the sport.

Abstract: The present invention is a piece of exercise equipment designed to train and condition sport-specific muscle groups used during a swinging motion, as in golf. It is comprised of a mechanical linkage, with at least six degrees of freedom of motion so that it effectively simulates a wide variety of golf swings without the need for complex adjustments. It includes a resistance mechanism, such as a pulley system linked to two one-way hydraulic cylinders. This allows a user to simultaneously practice swing form and technique while also strengthening and conditioning the specific muscles needed for the sport.