Abstract: An electronically controlled variable speed mechanical drive to be used in high power applications where using a direct drive motor is not feasible due to weight and size constraints. The variable speed drive components convert an externally driven fixed displacement pump into a variable displacement pump by electronically setting the pump speed to meet flow demands. A single stage pump and a multi-stage pump are so converted, according to the present disclosure.

Abstract: A motor-driven fluid pump has a positive displacement rotary pumping element with an offset circular cam carried outwardly of the element, the cam being rotated with the pumping element by contact with pistons carried radially by the pumping element. Ends of the pistons are spherical and bear directly on the cam's inner surface. During breaking in of each pump, the piston ends wear a single concave groove in the inner surface of the cam, which helps to stabilize the pistons. The pump maintains a constant mass flow rate for a given input command by adjusting for fluid type, measured fluid operating temperature, and changing motor speed. The pump also maintains a constant flow output for its life by adjusting for internal wear; it also predicts its remaining life by comparing its current motor speed for a given flow against the maximum allowable motor speed.

Abstract: An electronically controlled variable speed mechanical drive to be used in high power applications where using a direct drive motor is not feasible due to weight and size constraints. The variable speed drive components convert an externally driven fixed displacement pump into a variable displacement pump by electronically setting the pump speed to meet flow demands. A single stage pump and a multi-stage pump are so converted, according to the present disclosure.

Abstract: A motor-driven fluid pump has a positive displacement rotary pumping element with an offset circular cam carried outwardly of the element, the cam being rotated with the pumping element by contact with pistons carried radially by the pumping element. Ends of the pistons are spherical and bear directly on the cam's inner surface. During breaking in of each pump, the piston ends wear a single concave groove in the inner surface of the cam, which helps to stabilize the pistons. The pump maintains a constant mass flow rate for a given input command by adjusting for fluid type, measured fluid operating temperature, and changing motor speed. The pump also maintains a constant flow output for its life by adjusting for internal wear; it also predicts its remaining life by comparing its current motor speed for a given flow against the maximum allowable motor speed.

Abstract: An electronically controlled variable speed mechanical drive to be used in high power applications where using a direct drive motor is not feasible due to weight and size constraints. The variable speed drive components convert an externally driven fixed displacement pump into a variable displacement pump by electronically setting the pump speed to meet flow demands. A single stage pump and a multi-stage pump are so converted according to the present disclosure.

Abstract: A motor-driven fluid pump has a positive displacement rotary pumping element with a circular rotating cam carried outwardly of the element that is rotated with the pumping element by contact with pistons carried radially by the pumping element. The pump maintains a constant mass flow rate for a given input command by adjusting for fluid type, for measured fluid operating temperature, and for changing motor speed according to a pre-set algorithm. The motor-driven fluid pump also has the capability to maintain a constant flow output over the life of the pump by adjusting for internal wear and having the capability to predict its remaining life by comparing its current motor speed against the maximum allowable motor speed.

Abstract: An apparatus for collecting weld tip chips created by a weld tip dresser is provided that “catches” the chips at the cutting tool and collects them in a container, preventing their disbursement on the factory floor. The apparatus includes a body adapted for connection to the weld tip dresser and with an opening therethrough configured to permit the weld tip dresser therethrough. The body defines an air inlet passage extending from an outer surface of the body to the opening. The body defines an air outlet passage from the opening to the outer surface. A pressurized air supply is connected to the body at the air inlet passage and is configured to blow air through the air inlet passage to blow chips from the opening through the air outlet passage. A container is operatively connected to the body at the air outlet passage for collecting chips blown from the opening.

Abstract: An apparatus for collecting weld tip chips created by a weld tip dresser is provided that “catches” the chips at the cutting tool and collects them in a container, preventing their disbursement on the factory floor. The apparatus includes a body adapted for connection to the weld tip dresser and with an opening therethrough configured to permit the weld tip dresser therethrough. The body defines an air inlet passage extending from an outer surface of the body to the opening. The body defines an air outlet passage from the opening to the outer surface. A pressurized air supply is connected to the body at the air inlet passage and is configured to blow air through the air inlet passage to blow chips from the opening through the air outlet passage. A container is operatively connected to the body at the air outlet passage for collecting chips blown from the opening.