Implements or apparatus for applying pushing or pulling force – Pipe or rod jack – Tie rod tensioner
Patent
1987-10-20
1989-06-27
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Pipe or rod jack
Tie rod tensioner
E21B 1900
Patent
active
048422487
ABSTRACT:
An hydraulic apparatus is provided for pushing and pulling rod or pipe underground. The apparatus includes a frame for mounting an hydraulic cylinder and a carriage. The carriage is mounted for reciprocating movement along rails attached to the frame. The carriage includes a lower carriage plate, an upper guide plate, and left and right side plates for retaining an actuator slide connected to the hydraulic cylinder. The slide rides on a plurality of thrust roller disposed in a race between the slide and a wear plate mounted in the lower carriage plate. The top of the slide comprises a cam surface that cradles a pair of actuator rollers which bear against a corresponding cam surface on the bottom of an actuator key. The top portion of the actuator key extends through a slot in the upper guide plate and is attached to a lower clamp plate that cradles the rod or pipe. Clamping jaws are mounted on an upper clamp plate that is rigidly connected to the lower carriage plate and the upper guide plate and mounted a fixed distance above the upper guide plate. Actuation of the hydraulic cylinder causes the slide to move longitudinally relative to the carriage, thereby moving the cam surface so that the actuator rollers force the actuator key and lower clamp plate upward to grip the rod between the lower clamp plate and the jaws. Further actuation of the hydraulic cylinder causes the carriage and gripped rod to move as a unit along the rails to push or pull the rod underground.
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Anser, Millenium Corp., 1900 E. Golf Rd. M-100, Schaumburg, IL 60195, (Undated Brochure).
Causco Pusher/Borer, Causco Inc., P.O. Box 1921, Independence, MO 64055, (Undated Brochure).
The Elephant, Elephant Industries, Inc., P.O. Box 3626, North Fort Myers, FL 33903, (Undated Brochure).
Ditch Witch "312", The Charles Machine Works, Inc., P.O. Box 66, Perry, OK 73077, (Undated Brochure).
Duke Hydraulic Pushers, Bor-Tec Industries Inc., P.O. Box 505, Stockbridge, GA 30281, (Undated Brochure).
Hole-Mole, General Equipment Co., P.O. Box 334, Owatonna, MN 55060, (1982 Brochure).
Porta-Pusher I, Vermeer Manufacturing Co., Pella, Iowa 50219, (Undated Brochure).
Poweram, Poweram Corp., P.O. Box 62, Barron, WI 54812, (Undated Brochure).
Pow-R Mole (Heavy Duty), Pow-R Devices, Inc., 9605 Clarence Center Rd., Clarence Center, N.Y. 14032, (Undated Brochure).
Pow-R Mole PD-4, Pow-R, Devices Inc., Clarence Center, N.Y. 14032, (Undated Brochure).
Twin Draulic, M.E.P. Fabricating Co., 1248 Shappert Dr., Loves Park, IL 61111, (Undated Brochure).
McLaughlin Mfg. Co., Inc.
Watson Robert C.
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