Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – By means advancing along terrain and guiding pipe or cable...
Patent
1996-09-03
1999-08-10
Graysay, Tamara L.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
By means advancing along terrain and guiding pipe or cable...
405183, 37367, H02G 106, E02F 510
Patent
active
059348330
ABSTRACT:
A self-propelled, and winch assisted, steerable vibratory plow for laying underground pipe or cable, having a V-shaped blade connected to an oscillator which provides both elliptical and horizontal plow blade motion as needed, and with auxiliary straight blade plows for laying lateral lines on the sides of the main line. The main plow's gasoline engine powers a hydraulic system which powers the winch and a transaxle connected to the forward drive wheels, and powers the oscillator and a steering cylinder, as well as powering a hydraulic cylinder for lowering and raising the plow blade.
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patent: 3952810 (1976-04-01), Ulrich
patent: 4506740 (1985-03-01), Carter
patent: 4685832 (1987-08-01), Decker
patent: 5108229 (1992-04-01), Slanker
Ekegren Paul
Hunter Lemna J.
Hunter Paul M.
Adams Paul
Graysay Tamara L.
Installation Systems, A California Limited Liability Company
Mayo Tara L.
Myers Jeffrey D.
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