Abstract: The invention is based on a wiper device with at least one wiper arm (10a; 10b; 10c) and with at least one nozzle element (12a; 12b, 14b; 12c) which is provided for spraying wiping water. It is proposed that the at least one nozzle element (12a; 12b, 14b; 12c) is directly connected in a low position to the wiper arm (10a; 10b; 10c).

Abstract: An infusion pump assembly includes a locking tab and a pump barrel inside a pump barrel housing, where the pump barrel accommodates a reservoir assembly. The reservoir assembly includes a reservoir and a plunger rod. The infusion pump assembly also includes a locking disc at a terminus of the pump barrel. The locking disc includes a clearance hole for the plunger rod. The locking disc also includes at least one locking tab notch in close proximity with the locking tab. The locking tab is in moveable engagement with the locking tab notch, and the reservoir moves the locking tab from a locked position to an unlocked position when the plunger rod is inserted through clearance hole. The locking disc rotates upon torque being applied to the reservoir assembly, the locking disc rotating from a non-loaded position to a loaded position with respect to the plunger rod and a drive screw.

Abstract: The invention is a component of a subsurface traveling barrel bottom anchor pump comprising a traveling valve assembly which includes: a cylindrical valve body having a lower section, the lower section having a central bore therethrough and external threads which interact with a threaded connection on a traveling barrel to removably attach the valve body to the traveling barrel; an upper section having a rod connection externally threaded for attachment to a pumping rod; a center section having a fishing neck portion and cage portion; a valve cage accommodated entirely within the internal portion of the cage portion; a valve ball positioned within the valve cage; a valve seat abutting the valve cage; and a ball and seat plug threaded into the lower section of the valve body for retaining the valve seat in the valve body.

Abstract: A compact manually operated air compression device for precompressed air guns has been disclosed, wherein two operating levers, positioned on opposite sides of a cylinder, are connected to a piston rod by means of connecting links. Lightweight connection of operating levers to the cylinder provided. Configuration of the device affords adjustment position of the piston in the cylinder.

Abstract: A durable, economical, easy-to-repair device for elevating liquid through a well in a landfill or other geological site, comprising a casing for channeling liquid having inlet and outlet openings at either end, a removable, valve-containing piston assembly for elevating liquid toward the outlet, and a second, stationary valve. Means are provided to remove the stationary valve along with the piston valve. The device preferably includes an actuator for driving the piston assembly and a liner to protect the casing. Also, a method of installing and using a device for elevating liquid through a well in a landfill or other geological site, comprising the steps of inserting a casing for channeling liquid into the geological site; inserting a stationary valve into the casing; inserting into the casing a removable, valve-containing piston for elevating liquid; and reciprocally raising and lowering the piston to elevate liquid from below the surface of the geological site through the casing toward the surface.

Abstract: A thin walled (e.g., 1/16th inch), cylindrical, stainless steel inverted working barrel and seat adapted to concentrically insert into and sleeve upwardly within the lower end of a conventional oil or gas well production string and act as a replacement for or in lieu of a conventional thick walled working barrel. The production string structurally protects the thin walled barrel allowing for a significant savings in initial or replacement costs.