Row unit down pressure assembly

Earth working – Tool – standard or connection – Adjustable

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C172S397000, C172S677000

Reexamination Certificate

active

07540333

ABSTRACT:
A down pressure assembly for incorporation into an agricultural implement to be pulled by a tractor (10) has an attachment frame (21) for attachment between a portion of the agricultural implement and at least two wheels (22) of a row unit (18) for traveling along the ground, the row unit (18) also having a tool (23) disposed between the two wheels (22) for engaging the ground, the down pressure assembly also having at least one torsion element (41, 50) disposed on the frame (21), with the torsion element (41, 50) having one fixed mounting to the frame (21) and one adjustable mounting to the frame (21), and the assembly further having an adjustment mechanism (37, 60) for varying the torsion of the torsion element (41, 50) at the adjustable mounting; and at least one down pressure member (36, 56, 57) for receiving a force from the torsion element to apply a downward force to the top members (26, 27) of the frame (21).

REFERENCES:
patent: 856033 (1907-06-01), Crisler
patent: 1189615 (1916-07-01), Nelson et al.
patent: 3450210 (1969-06-01), Smith
patent: 4623024 (1986-11-01), Schlenker
patent: 4700785 (1987-10-01), Bartusek et al.
patent: 4702323 (1987-10-01), Smit et al.
patent: 4766962 (1988-08-01), Frase
patent: 4834189 (1989-05-01), Peterson et al.
patent: 4846084 (1989-07-01), Sigle
patent: 5279236 (1994-01-01), Truax
patent: 5450908 (1995-09-01), Hagman et al.
patent: 5529128 (1996-06-01), Peterson et al.
patent: 5544709 (1996-08-01), Lowe et al.
patent: 5555824 (1996-09-01), Stufflebeam et al.
patent: 5573072 (1996-11-01), Evane et al.
patent: 5724903 (1998-03-01), Yoder et al.
patent: 6347594 (2002-02-01), Wendling et al.
patent: 6454019 (2002-09-01), Prairie et al.
patent: 7401561 (2008-07-01), Kurz
patent: 2007/0022926 (2007-02-01), Flikkema et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Row unit down pressure assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Row unit down pressure assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Row unit down pressure assembly will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4081121

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.