Single Acting Changeable To Or From Double Acting Patents (Class 417/314)
  • Patent number: 11913441
    Abstract: Systems are provided for an air compressor system. In one example, a system includes a housing, a piston arranged in the housing, and a crankshaft arranged in the housing, the crankshaft coupled to a connecting rod of the piston, and the crankshaft forces the piston to oscillate from a first end of the housing to a second end, the piston pressurizing air in the housing to a first pressure at the first end and to a second pressure at the second end, the second pressure greater than the first.
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: February 27, 2024
    Assignee: TRANSPORTATION IP HOLDINGS, LLC
    Inventors: Andrew Miller, Christopher Lucke, Jeffrey Hritz, Matthew Chatham, Wesley Martincic
  • Patent number: 5735675
    Abstract: A combination compressor unloader which has a horizontal cylinder and a double acting piston forming two compression chambers. Each chamber communicates by a passageway with a supplementary chamber with each passageway associated with a reversible actuator having an attached unloader plug capable of sealing the passageway from a remote control. A second means is provided to form a reversible by pass that can deactivate at least one cylinder end of said double ended piston.
    Type: Grant
    Filed: July 25, 1995
    Date of Patent: April 7, 1998
    Inventors: Richard Claude Peoples, Daniel Lee Umbaugh
  • Patent number: 5275538
    Abstract: A coolant pump system driven by an electric motor mounted in-line with the pump shaft to the pump housing. The system minimally includes a pump body having a bore therein, a coolant pump impeller, a pump shaft passing through the bore and having the impeller mounted on one end thereof, and a bearingless seal shaft assembly disposed in the bore which prevents coolant from leaking out of the body around the rotating pump shaft. The outer end of the pump shaft and the drive shaft of the electric motor preferably include a quick-disconnect coupler which allows the two shafts to be repeatedly coupled and uncoupled without damage and without tools. This coupling mechanism may take the form of a socket with bayonet slot on one shaft and mating pin on the other shaft that fits in the slot. A face-mounted electric motor is rigidly but removably bolted to the pump housing, and its drive shaft provides complete support for the pump shaft which rotates therewith.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: January 4, 1994
    Assignee: Deco-Grand, Inc.
    Inventors: Joseph Paliwoda, Verle Propst
  • Patent number: 4842489
    Abstract: The invention provides a hand-operated pump for fluids in general, which comprises a body inside which a cylindrical hollow is provided, inside which a plunger is slidingly mounted, such a plunger dividing said hollow into a first variable-volume chamber and a second variable-volume chamber, said pump comprising unidirectional valve means which control the intake of fluid from the outside into said chambers, and the delivery of fluid from said chambers to the outside, said plunger being suitable to be reciprocatingly driven by means of an outer handle according to a to-stroke during which the handle is taken away from the pump's body, during said to-stroke fluid being intaken from the outside into the second chamber, and fluid being delivered from the first chamber to the outside, and according to a fro-stroke, during which the handle is approached again to the pump's body, during said to-stroke fluid being intaken from the outside into said first chamber, and fluid being delivered from the second chamber to
    Type: Grant
    Filed: April 3, 1987
    Date of Patent: June 27, 1989
    Inventor: Francesco Lucisano
  • Patent number: 4838768
    Abstract: A fluid pump system whose output can be varied by converting it from maximum output to a lesser output and in between by dumping or varying one of its pumping elements or pistons to the inlet side of the pump. More specifically, a pump is provided with two opposed pistons, both of which are connected to inlet and outlet for maximum capacity. The piston chamber of one piston is equipped with a converter line for leading that chamber back to the inlet, whereby only the remaining piston furnishes the pump discharge. Variations in the adjustable mode of the valve is reflected in the action of the pump relief valve to cause increased effectiveness of a jetter line supplied by the pump output.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: June 13, 1989
    Inventor: William J. Flaherty
  • Patent number: 4382748
    Abstract: A free piston engine pump (FPEP) converts combustion energy into hydraulic power in an efficient, controlled and relatively uncomplicated manner, for example, for vehicle propulsion, auxiliary system power, etc. The FPEP is substantially naturally mass balanced having opposed engine pistons driving respective in-line hydraulic pumps. An adjustable accumulator with a deformable fluid-tight chamber containing a compressible fluid stores and delivers energy for compression, and an arrangement of control valves and check valves enables selective operation of the FPEP in primary (high flow) and secondary (high pressure) modes. Plural FPEP's may be interfaced for parallel operation sharing common elements and functions. Cycle rate, intermittent operation and start-up also may be controlled. Electronic monitoring and control of one or more operational parameters of a FPEP also are disclosed.
    Type: Grant
    Filed: November 3, 1980
    Date of Patent: May 10, 1983
    Assignee: Pneumo Corporation
    Inventor: Robert D. Vanderlaan