Other

Walker Derocker, LLC

James R Walker

Michael R Walker

David W Hansen

Mike L Morris

A dual filter pump assembly provides a portable, typically hand-powered vacuum and pressure pump that alternatively creates a vacuum or negative pressure and positive pressure which force a liquid to be filtered through various passageways and chambers in a base and through a coarse filter medium and a micro filter medium. A lower check valve and an upper check valve maintain synchronized communication between the passageways, such that there is sufficient pressure and flow regulation to force the liquid through micro-sized pores in the generally flow restrictive micro filter medium. The micro-sized pores may be susceptible to inhibiting the flow of the liquid, and consequently generate pressure build up inside the pump and filter chambers. In some embodiments, a relief valve may help release the excess fluid pressure build up in the pump and filter chambers. The relief valve may additionally provide an indication of when the micro filter medium requires cleaning, such as in the event that some of the liquid exits a relief port in the relief valve.

Dual filter pump assembly

A hydraulic separation system and method enables efficient recycling of log yard waste from an elevated frame. The system separates fine granules, small rocks, small bark, large bark, and large rocks with a variety of sequentially positioned, hydraulically powered separating components. The separation is mechanical and the size and weight of the individual material determines where in the system it is separated. Conveyors carry the log yard waste through the system. Shaking screens shake in a fast, up and down motion to flip and move the material through the system. Adjustable sloped plates work to accelerate and decelerate the material through the system. Dampening fingers control the disposition of elongated pieces of large bark and help to decelerate down the material. Blowers separate the bark from heavier rock and granular material. The elevated frame to enable cleaning and access to materials discharged beneath the elevated frame.

Hydraulic log yard waste separation system and method

A hand operated pump and filter assembly for transferring low viscosity fluids, such as hydraulic oil, from a supply container to a machine requiring the fluid, and for filtering the fluid. The pump is a combination vacuum and displacement pump. The pump has a barrel with a cylindrical central passageway therein. A piston is positioned within the central passageway and is connected to the lower end of a piston rod. The upper end of the piston rod is attached to a handle for effecting upward and downward movement of the piston. The piston has fluid passageways extending therethrough and valve means associated with the fluid passageways to prevent fluid from flowing through the passageways during the piston upstroke but allowing fluid to flow through the passageways during the piston downstroke. The inlet end of the pump barrel has a valve subassembly means which seals communication between the central passageway thereof and a fluid supply container during the piston downstroke but opens communication during the piston upstroke. An adapter is provided for locking the pump barrel to the outlet of a fluid supply container. The outlet end of the pump barrel communicates with a filter via a conduit. The filter is preferably a ten micron filter for removing very fine impurities from the fluid being pumped. The outlet of the filter communicates with the machine to which the fluid is being transferred via a flexible conduit.

Pump and filter assembly for low viscosity fluids

A door mounting tool is used for mounting a door to a door jamb and includes a frame having a base frame member for holding the base of a door and an end frame member hingedly attached to the base frame member for holding one edge of a door. A plurality of door holding members are movably attached to the frame for locking the door to the base frame member and to the end frame member. A plurality of side support members may be either hingedly or fixedly attached to the side of the base frame member and each has an adjustable leg extending therefrom for adjusting the height of the base frame member adjacent a door jamb. There is at least one wheel mounted to the base frame member at one end thereof for rolling the frame therein when a door is attached thereto so that a door can be mounted to the door mounting tool and positioned for hanging the door to a door jamb and for moving the door around a job site like a door cart or dolly. The base frame member and the end frame member are each U-channels hinged together and the plurality of door holding members are threaded through one side of each U-channel member for driving the edge of a door against one edge of each U-frame member. The end frame member can be folded onto the base frame member and the plurality of side support members folded adjacent the base frame member for storage of the door mounting tool.

Door mounting apparatus

Apparatus including an expandable bellows having a pair of end plates, one plate being provided with a fluid inlet and the other plate being provided with a fluid outlet. A diffuser and filter is located within the bellows across the fluid path between the inlet and outlet. Thus, fluid at an elevated temperature entering the bellows must flow first through the diffuser, then through the filter before leaving the space within the bellows. In this way, the fluid is filtered before passing to and through the outlet. The expansion capability of the bellows provides a heat exchange relation between the fluid and the bellows itself. A pressure relief cap can be coupled to an outlet port communicating with the interior of the bellows. The inlet is adapted to be coupled to the waste line of a fluid pump of a hydrostatic system and the outlet is adapted to be coupled to the supply line of the fluid pump.

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Days Creek, OR, United States of America

James R Walker