Pneumatic Patents (Class 104/14)
  • Patent number: 10378169
    Abstract: A hydraulic pole tamper handle kit having an extended ergonomic handle including a frame and hose clamps to extend the life of the hose by securing the hoses to the frame and to improve the handle, orientation, safety, and usability of the pole tamper. The pole tamper is used to tamp or compact the dirt around a pole which has been set into a hole in the ground to fixedly secure the pole vertically in the ground.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: August 13, 2019
    Inventor: Timothy Hamilton
  • Patent number: 6386114
    Abstract: A split tool tamper having a motor, a frame, a single tool shaft, and a tamping tool. The motor is coupled to the frame and the tool shaft is coupled to the motor. The tool shaft is further coupled to a single tamping tool.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: May 14, 2002
    Assignee: Harsco Technologies Corporation
    Inventors: John Morgan, Peter Youngman
  • Patent number: 5340233
    Abstract: A pneumatically operated percussion apparatus for compacting soil, or other material. The apparatus includes a gear case that supports a percussion unit that is adapted to engage the soil to compact the same. A pneumatically operated motor is mounted on the gear case and air is supplied to the motor via a manually-operated "deadman" valve unit. A centrifugal clutch connects the output shaft of the motor to the percussion unit. The air flow to the motor is controlled by a governor to obtain a substantially uniform rotational speed for the motor output shaft.
    Type: Grant
    Filed: October 7, 1992
    Date of Patent: August 23, 1994
    Assignee: M-B-W Inc.
    Inventor: Robert M. Motl