Abstract: A double acting pneumatic motor having a cylinder, a piston within the cylinder that divides the cylinder into two cavities that vary in volume with movement of the piston, a source of fluid under pressure, and a valve assembly for alternately directing fluid to one cavity while exhausting the other cavity to make the piston reciprocate. The valve assembly resides in a housing, and includes a cylindrical spool that moves axially between two positions with at least one enlarged diameter portion between smaller diameter portions at each end. The pneumatic motor may be provided with a cover for attenuating sound from the exhaust.

Abstract: An oil mist generating system and monitoring method is shown and described, including pressurized air and oil supplies connected to a mist generating head. Sensors are provided for monitoring current values of the system operating parameters and for generating data signals based on the monitored values. A data processor functionally connected to the sensors generates signals based on the data input, such as an alarm signal if one of the monitored values is beyond the extremes of a predetermined range of values indicative of a fault condition. A visual display device displays programmed messages based on the signals generated by the data processing means. If a fault condition exists, the displayed messages aid the user in diagnosing and correcting the reason for the alarm signal. The user may manually request further programmed messages using a keypad, which messages direct the user to take predetermined actions to troubleshoot the problem and maintain the system at an appropriate operating level.

Abstract: An apparatus for generating a mist for use in a centralized, pressurized gas-driven mist generating system is disclosed in which a frame member is formed with a mist generating passage, a pressurized gas inlet passage connecting with the mist generating passage, and a liquid inlet passage connecting with the mist generating passage. The mist generating passage is adapted to receive a gas-operated venturi nozzle having mist flow rates ranging from about 0.1 cfm to about 65 cfm. A pressure relief valve for relieving excess gas pressure is also disposed in the mist generating passage and adapted to open if the gas pressure in the mist generating system reaches a predetermined level. The mist generating apparatus further comprises an adjusting member, such as a needle valve, disposed in the liquid inlet passage and extending externally of the frame member to a position accessible for adjustive manipulation by an operator for controlling the liquid flow rate and adjusting the ratio of liquid-to-gas in the mist.

Abstract: A portable vehicle fluid drain device is disclosed. The device includes a vertical drain tube which supports a vehicle fluid drain bowl. The drain tube is manually adjusted to an elevated position, latched in place while the vehicle fluid is drained, and unlatched to descend at a rate less than that of free fall due to the use of a friction brake. The friction force imparted by the brake on the drain tube is adjusted by rotating a wing nut on a carriage bolt to squeeze the inner edges of two wishbone arms against the drain tube. A method of using a vehicle fluid drain device with a brake and a self-latching mechanism is disclosed.

Abstract: A fluid flow control valve is provided comprising a valve seat inside a housing for defining a passage opening in the housing and a valve seal positioned against the valve seat for closing off fluid flow. A push rod extends from the valve seal and through the passage opening. The push rod is moveable for moving the valve seal off the seat to open the valve. The valve seal is restricted to substantially axial movement, preferably by a spring biasing the valve seal against the valve seat which spring is sized so as to engage the walls of the passage. A cam shaft rotatably mounted in the housing is provided for moving the push rod upon rotation of the cam shaft. A handle is non-rotatably connected to the shaft for rotating the cam shaft. A latch may be provided for releasably locking the handle in a position where the valve is open. A safety may also be provided on the latch arm so as to prevent the handle from being moved accidentally.

Abstract: A portable vehicle fluid drain device is disclosed. The device includes a vertical drain tube which supports a vehicle fluid drain bowl. The drain tube is manually adjusted to an elevated position, latched in place while the vehicle fluid is drained, and unlatched to descend at a rate less than that of free fall due to the use of a friction brake. The friction force imparted by the brake on the drain tube is adjusted by rotating a wing nut on a carriage bolt to squeeze the inner edges of two wishbone arms against the drain tube. A method of using a vehicle fluid drain device with a brake and a self-latching mechanism is disclosed.

Abstract: A grease fitting is made by forming its outer shell in a series of cold forging steps to make a blank with the necessary thread blank at one end, a hexagonal center portion, and with a grease-fitting-mating nipple outline at the other end. Threads are rolled onto the thread blank, and the grease-gun-mating nipple is rolled to smooth and burnish its surface. The grease fitting is then successively drilled to make a hole of three different diameters to form the one-way valve ball seat and two ball spring clearance diameters. The ball and spring are inserted, and the end of the hole is formed over the end of the spring to capture the spring into place.

Abstract: A dual mode pistol grip grease gun that operates in either the volume mode or the pressure mode. The grease gun comprises a cylinder head, which has a handle fixed to it. Attached to the handle via a shiftable link is a lever, which has a U-shaped slot disposed at one end. The shiftable link is disposed in the U-shaped slot of the lever, and its position therein defines whether the grease gun is in the volume or the pressure mode. Rotatably attached to the lever is a piston, which enters the cylinder head when the lever is depressed. A stop disposed in the lever that rests against the piston keeps the span between the lever and the handle the same for both the volume and pressure modes.

Abstract: A podium for a lubricating dispenser, the podium including an upright support structure, a housing attached to the support structure, a shelf attached to the support structure and extending over the housing, the shelf having mounting means thereon for receiving and retaining the lubricating dispenser, the shelf having a trough therein, the housing having a hole in an upper surface thereof, the hole being adapted for a hose to pass therethrough from the housing to the dispenser, the mounting means being adapted to receive the dispenser such that a grip portion of the dispenser extends outwardly from the support structure and the nozzle portion of the dispenser extends inwardly toward the support structure and over the trough.

Abstract: A paint spray gun in which its nozzle, nozzle-gun adapter and paint inlet fitting are all formed by a single plastic nozzle unit, and its air cap is also a one-piece plastic molding. Minor molding inaccuracies in these parts are corrected by thin section nozzle unit walls that engage portions of the air cap.