Propulsion apparatus

Details Propulsion apparatus Propulsion apparatus

1991-07-15

1994-05-17

Reese, Randolph A.

Excavating

Ditcher

Wheel excavator

37 86, 37192A, 37195, 37357, 37355, 405267, E02F 314, E02F 508, E02D 518

Patent

active

053116836

ABSTRACT:
Propulsion apparatus is disclosed for urging a trenching arm forward against the advancing face of an elongate trench being dug by the trenching arm. The propulsion apparatus includes a propulsion member which is engageable with the base wall of the trench such that the trenching arm may be urged forward relative to the engaged propulsion member. The propulsion member may then be withdrawn from engagement with the base wall and retracted towards the trenching arm before commencing a further propulsion cycle. The propulsion member is also operable to cooperate with the trenching arm in excavating a starting slot at the beginning of a new trench.

REFERENCES:
patent: 1306350 (1919-06-01), McIntire
patent: 1769074 (1930-07-01), Ruatti
patent: 1850363 (1932-03-01), Vaughn
patent: 3951459 (1976-04-01), Honeycutt, Jr.
patent: 4681483 (1987-07-01), Camilleri
patent: 4843742 (1989-07-01), Camilleri
patent: 4861199 (1989-08-01), Hackmack
patent: 4930940 (1990-06-01), Charlier et al.

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