Pneumatically operated rammer

Details Pneumatically operated rammer Pneumatically operated rammer

1992-10-07

1994-08-23

Britts, Ramon S.

Road structure, process, or apparatus

Apparatus

Tamper

104 14, 4041331, E01C 1934

Patent

active

053402332

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.

REFERENCES:
patent: 3277801 (1966-10-01), Horvath et al.
patent: 3552410 (1971-01-01), Amtsberg
patent: 3630127 (1971-12-01), Yamato
patent: 3964182 (1976-06-01), Pomeret et al.
patent: 4156576 (1979-05-01), Clavel et al.
patent: 4186197 (1980-01-01), Tetsuo
patent: 4557336 (1985-12-01), DeNise
patent: 4850437 (1989-07-01), Sudnishnikov et al.
"An Impact Compactor For Every Job", Racine Hydraulics: Machinery, Inc., Racine, Wis. (1963).
"Air Motor", Atlas Copco Tools Inc., Farmington Hills, Mich.
"Ground Pounder". M-B-W, Slinger, Wis.

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