Title: Hydraulic reset for tillage and seeding equipment

Abstract: An hydraulic ram is situated between the tillage tool and the frame and is normally fully extended and acts as a rigid link. The ram has a predetermined and adjustable pressure so that if an obstruction is encountered by the tool, it only retracts when the preset pressure is exceeded and then returns to the fully extended position as soon as the obstruction is passed. It can be used on machines such as discers, hoe drills, press drills or any ground working implement which includes tillage tools which are pivoted to the frame and which do not engage the ground by raising and lowering the frame. An adjustable pressure reducing valve is situated in the hydraulic line extending to the ram and senses the pressure downstream of the valve rather than the pressure upstream as is usual.

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Other info:

Inventors: Poggemiller, Erhard (Box 128, Luseland, Saskatchewan, CA)
Sweet, Ralph (Box 3, Forgan, Saskatchewan, CA)

Application Number: 06/391457
Filing Date: 1982-06-23
Publication_date: 1983-12-27
Assignee: Poggemiller, Erhard
Sweet, Ralph

Primary Class(es): 172/260.500 172/464, 172/572, 111/164
Other Classes: A01B61/04; A01B61/00; A01B61/04; A01B63/32
US Patent Ref:

2756662	July, 1956	Christensen	172/491	Disc opener suspension
3439749	April, 1969	Olsson	172/572	DRAWBAR CONSTRUCTION FOR FURROW OPENER
3561541	February, 1971	Woelfel	172/260.5	TRACTOR AND IMPLEMENT HYDRAULIC CONTROL SYSTEM
3565180	February, 1971	Arnold	172/260.5	PLOW CONSTRUCTION
3752092	August, 1973	Vinyard	172/260.5	SOIL WORKING APPARATUS
4044697	August, 1977	Swanson	172/464	No till seed drill
4116140	September, 1978	Anderson	172/572	Press wheel depth control for grain drill furrow openers

Other Refs:
Primary Examiner: Johnson, Richard J.
Assistant Examiner:
Attorney: Ade, Stanley G.

Parent Case Data: BACKGROUND OF THE INVENTION

This invention relates to new and useful improvement in resetting devi