Abstract: A lubricant pump (14) and a method thereof are disclosed. The lubricant pump (14) includes a pump base (32) and a reservoir housing (30). The pump base (32) and the reservoir housing (30) define a lubricant reservoir for storing lubricant. One or more pump elements (34) extend at least partially into the lubricant reservoir. Heaters (36) are disposed on the pump base (32) proximate the pump elements (34). The heaters (36) are configured to heat the local area surrounding the pump elements (34), to thereby reduce the viscosity of the lubricant at the pump elements (34). The heaters (36) are electrically connected to a thermal switch (38) to control activation and deactivation of the heaters (36). With the lubricant pump (14) and the method thereof, the thermal switch (38) can control the heater (36) based on air temperature rather than the temperature of the lubricant, so the viscosity of lubricant is well controlled.

Abstract: A piston for a single-stroke pump includes a pump rod, a seal ring extending about the pump rod and having a central bore, and a retaining device disposed on the pump rod and retaining the seal ring on the pump rod. In a forward stroke, the seal ring is in a first position whereby the seal ring sealingly engages the pump rod such that the seal ring and pump rod drive a fluid out of the pump chamber. When transitioning to a return stroke, the seal ring is maintained stationary relative to the pump cylinder until retaining device engages seal ring, such that seal ring is in a second position. With the seal ring in the second position, a flow path is opened between the seal ring and the pump rod, allowing fluid to flow into the pump chamber to prime the pump the next pump cycle.

Abstract: A piston for a single-stroke pump includes a pump rod, a seal ring extending about the pump rod and having a central bore, and a retaining device disposed on the pump rod and retaining the seal ring on the pump rod. In a forward stroke, the seal ring is in a first position whereby the seal ring sealingly engages the pump rod such that the seal ring and pump rod drive a fluid out of the pump chamber. When transitioning to a return stroke, the seal ring is maintained stationary relative to the pump cylinder until retaining device engages seal ring, such that seal ring is in a second position. With the seal ring in the second position, a flow path is opened between the seal ring and the pump rod, allowing fluid to flow into the pump chamber to prime the pump the next pump cycle.

Abstract: A reciprocating pump comprises a cylinder, an inlet check valve, a piston, an outlet check valve and a purge circuit. The cylinder has a first end and a second end. The inlet check valve is disposed proximate a first end of the cylinder. The piston is disposed within the cylinder between the inlet check valve and the second end. The outlet check valve is disposed within the piston. The purge circuit extends across the inlet check valve and the outlet check valve to fluidly couple the first end and the second end.

Abstract: An end cap assembly for a reciprocating air motor comprises a pilot valve and an end cap body. The pilot has a valve stem. The end cap body comprises a central bore for receiving an air motor rod, a valve bore in which the pilot valve is disposed such that the valve stem extends through the end cap body, and an air port extending through the end cap body. The air port has a contour to direct air toward the valve stem.

Abstract: A hose reel (10) is supported by a mounting bracket (12) which can be attached on a vertical or horizontal surface and allow for 180 degrees of motion to allow the hose reel (10) to automatically swivel in the direction the hose (14) is being pulled. The bracket mechanism (16) consists of integral mounting bosses (18) on the hose reel enclosures (20), a mounting bracket (12), a tube (22) and a constraint device (24) on the tube (22). The mounting bosses (18) on the hose reel enclosures (20) are designed to orient and constrain the mounting tube (22) to allow for the tube to be installed from either end of the hose reel. The constraining device (24) on the tube (22) locks into an integral opening (26) in the mounting bosses (18) to prevent tube (22) displacement in either direction.

Abstract: A reciprocating pump comprises a cylinder, an inlet check valve, a piston, an outlet check valve and a purge circuit. The cylinder has a first end and a second end. The inlet check valve is disposed proximate a first end of the cylinder. The piston is disposed within the cylinder between the inlet check valve and the second end. The outlet check valve is disposed within the piston. The purge circuit extends across the inlet check valve and the outlet check valve to fluidly couple the first end and the second end.

Abstract: An end cap assembly for a reciprocating air motor comprises a pilot valve and an end cap body. The pilot has a valve stem. The end cap body comprises a central bore for receiving an air motor rod, a valve bore in which the pilot valve is disposed such that the valve stem extends through the end cap body, and an air port extending through the end cap body. The air port has a contour to direct air toward the valve stem.

Abstract: An enclosed hose reel 10 consists of a spool and two enclosure halves 14 comprising the frame 16. The power spring 18 is contained in the spool 12. Tension on the power spring 18 is transmitted to the frame 16 via a shaft 20 with a spring 30 loaded ratchet 22. The ratchet mechanism 24 engages the frame 16 via protrusions 26 that fit into cutouts 28 within the enclosure 14. The protrusions and cutouts 28 are designed so that a clockwise rotation is allowed to increase the tension of the power spring 18.

Abstract: A hose reel 10 is supported by a mounting bracket 12 which can be attached on a vertical or horizontal surface and allow for 180 degrees of motion to allow the hose reel 10 to automatically swivel in the direction the hose 14 is being pulled. The bracket mechanism 16 consists of integral mounting bosses 18 on the hose reel enclosures 20, a mounting bracket 12, a tube 22 and a constraint device 24 on the tube 22. The mounting bosses 18 on the hose reel enclosures 20 are designed to orient and constrain the mounting tube 22 to allow for the tube to be installed from either end of the hose reel. The constraining device 24 on the tube 22 locks into an integral opening 26 in the mounting bosses 18 to prevent tube 22 displacement in either direction.