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US4714227A Expired / Lapsed US ⏱️ 0.0 years remaining

Seat suspension for an off-road vehicle

Assignee: Deere and Co
•
Filing: 1986-11-17
•
Granted: 1987-12-22
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Expires: 2006-11-17
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Abstract

Abstract An improved seat suspension for reducing the jolt transferred from the seat of a vehicle to an operator when the vehicle "bottoms out". The improved seat suspension consists of a base unit connected to the vehicle, a support unit housing an attenuation unit for attaching the seat to the seat suspension, and a unit for operatively connecting the base and support units. The attenuation unit consists of at least one spring member which is contacted by a bumper attached to the connection unit just prior to the collision of the support unit with the base unit. By the bumper contacting the spring member, the effect of the collision on an operator occupying the seat is reduced.

Inventors

  • 👤 David R. Holm
  • 👤 Rudolph A. Peterson, Jr.

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 05:03
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/50; B60N2/502; B60N2/505; B60N2/506; B60N2/507; B60N2/54; B60N2/544

Claims Analysis

Total Claims: 22
Claim 1
Independent Claim 89 words
A seat suspension system for an off-road vehicle comprising: means for connecting said suspension to said vehicle; means, operatively connected to said suspension connection means,for connecting a seat to said suspension; means, operatively connected to said seat connection means, for attenuating the acceleration of said seat connection means toward said suspension connection means; and means, operatively connected to said suspension connection means, for directly contacting said attenuation means prior to said suspension connection means and said seat connection means colliding thereby reducing the sudden jerk produced by said collision.
Claim 2
Dependent Claim 89 words
A seat suspension system for an off-road vehicle comprising: means for connecting said suspension to said vehicle; means, operatively connected to said suspension connection means,for connecting a seat to said suspension; means, operatively connected to said seat connection means, for attenuating the acceleration of said seat connection means toward said suspension connection means; and means, operatively connected to said suspension connection means, for directly contacting said attenuation means prior to said suspension connection means and said seat connection means colliding thereby reducing the sudden jerk produced by said collision.
Claim 3
Dependent Claim 28 words
The seat suspension system of claim 1 wherein said suspension connection means further comprises: a first pair of operatively connected members each having flanges and apertures formed therein.
Claim 4
Dependent Claim 29 words
The seat suspension system of claim 1 wherein said seat connection means further comprises: a second pair of operatively connected members each having means fir attaching a seat thereto.
Claim 5
Dependent Claim 30 words
The seat suspension system of claim 3 wherein said second pair of members are connected by a rectangular member at one end and a slidable member at the other end.
Claim 6
Dependent Claim 26 words
The seat suspension system of claim 1 wherein said attenuation means further comprises: at least one resilient means operatively mounted to said second pair of members.
Claim 7
Dependent Claim 164 words
A seat suspension for an off-road vehicle comprising: a suspension base unit for operatively attaching said suspension to said vehicle; a seat suspension unit for operatively attaching a seat thereto; at least one spring member operatively positioned in said suspension unit for attenuating the vertical acceleration of said seat suspension unit toward said suspension base unit; at least one connecting unit, pivotable between a first position separating said seat susupension unit and said base unit and a second position in which said seat suspension unit contacts said suspension base unit, for operatively connecting said suspension base unit and said seat suspension unit; and a bumper, operatively connected to said connecting unit, for directly contacting said spring just prior to said seat suspension unit colliding with said suspension base unit such that the sudden force normally transmitted to said seat when said seat suspension unit and said suspension base unit collide is significantly reduced by said direct contact between said bumper and said spring member.
Claim 8
Dependent Claim 164 words
A seat suspension for an off-road vehicle comprising: a suspension base unit for operatively attaching said suspension to said vehicle; a seat suspension unit for operatively attaching a seat thereto; at least one spring member operatively positioned in said suspension unit for attenuating the vertical acceleration of said seat suspension unit toward said suspension base unit; at least one connecting unit, pivotable between a first position separating said seat susupension unit and said base unit and a second position in which said seat suspension unit contacts said suspension base unit, for operatively connecting said suspension base unit and said seat suspension unit; and a bumper, operatively connected to said connecting unit, for directly contacting said spring just prior to said seat suspension unit colliding with said suspension base unit such that the sudden force normally transmitted to said seat when said seat suspension unit and said suspension base unit collide is significantly reduced by said direct contact between said bumper and said spring member.
Claim 9
Dependent Claim 28 words
The seat suspension system of claim 6 wherein said suspension base unit further comprises: a first pair of operatively connected members each having flanges and apertures formed therein.
Claim 10
Dependent Claim 29 words
The seat suspension system of claim 6 wherein said seat suspension unit further comprises: a second pair of operatively connected members each having means for attaching a seat thereto.
Claim 11
Dependent Claim 52 words
The seat suspension system of claim 6 wherein said bumper directly contacts said spring member at a point intermediate the length of said spring such that the resiliency of said spring significantly reduces said sudden force normally transmitted to said seat when said seat suspension unit and said suspension base unit collide.
Claim 12
Dependent Claim 119 words
A seat suspension system for an off road vehicle comprising: a first pair of operatively connected members each having flanges and apertures formed therein; a second pair of members each having means for attaching a seat thereto and being operatively connected by a rectangular member at one end and a slidable member at the other end; means, operatively connected to said second pair of members, for attenuating the acceleration of said second pair of members towards said first pair of members; and means, operatively connected to said first pair of members, for contacting said attenuation means prior to said first pair of members and said second pair of members colliding thereby reducing the sudden jerk produced by said collision.
Claim 13
Dependent Claim 119 words
A seat suspension system for an off road vehicle comprising: a first pair of operatively connected members each having flanges and apertures formed therein; a second pair of members each having means for attaching a seat thereto and being operatively connected by a rectangular member at one end and a slidable member at the other end; means, operatively connected to said second pair of members, for attenuating the acceleration of said second pair of members towards said first pair of members; and means, operatively connected to said first pair of members, for contacting said attenuation means prior to said first pair of members and said second pair of members colliding thereby reducing the sudden jerk produced by said collision.
Claim 14
Dependent Claim 26 words
The seat suspension system of claim 10 wherein said attenuation means further comprises: at least one spring operatively mounted in said second pair of members .
Claim 15
Dependent Claim 28 words
The seat suspension system of claim 11 wherein said spring is operatively mounted between said rectangular member and said slidable member parallel to said second pair of members.
Claim 16
Dependent Claim 14 words
The seat suspension of claim 12 wherein the tension of said spring is adjustable.
Claim 17
Dependent Claim 68 words
The seat suspension of claim 11 wherein said attenuation contacting means furter comprises: at least one connecting unit rotatably connecting said first and said second pair of members; and at least one bumper operatively attached to said connecting member such that when said first pair of members and said second pair of members are vertically accelerated together, said bumper directly contacts said spring prior to said members colliding.
Claim 18
Dependent Claim 49 words
The seat suspension of claim 14 wherein when said bumper contacts said spring, the sudden jerk produced thereby is reduced by the elastic response of said spring to the direct contact with said bumper prior to the direct contact between said suspension connection means and said seat connection means.
Claim 19
Dependent Claim 13 words
The seat suspension system of claim 11 wherein said resilient means is adjustable.
Claim 20
Dependent Claim 23 words
The seat suspension system of claim 14 wherein said bumper directly contacts said spring at a point intermediate the length of said spring.
Claim 21
Dependent Claim 182 words
A seat suspension system comprising: a first pair of operatively connected members each having flanges and apertures formed therein for operatively attaching said seat suspension system to a vehicle; a second pair of operatively connected members each having means for operatively attaching a seat to said seat suspension system; at least one resilient member, operatively connected to said second pair of operatively connected members, for attenuating the relative vertical acceleration of said second pair of members towards said first pair of members; a pivotable connecting unit, movable between a first position separating said second pair of members and said first pair of members and a second position in which said first and said second pair of members are in direct contact; and a contact unit, operatively connected to said connecting unit, for rotating into direct contact with said resilient member at a point intermediate the ends thereof just prior to said first and said second pair of members colliding, said contacts between said resilient member and said contact unit significantly reducing the sudden force normally transmitted to said seat during said collision.
Claim 22
Dependent Claim 182 words
A seat suspension system comprising: a first pair of operatively connected members each having flanges and apertures formed therein for operatively attaching said seat suspension system to a vehicle; a second pair of operatively connected members each having means for operatively attaching a seat to said seat suspension system; at least one resilient member, operatively connected to said second pair of operatively connected members, for attenuating the relative vertical acceleration of said second pair of members towards said first pair of members; a pivotable connecting unit, movable between a first position separating said second pair of members and said first pair of members and a second position in which said first and said second pair of members are in direct contact; and a contact unit, operatively connected to said connecting unit, for rotating into direct contact with said resilient member at a point intermediate the ends thereof just prior to said first and said second pair of members colliding, said contacts between said resilient member and said contact unit significantly reducing the sudden force normally transmitted to said seat during said collision.

References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-12-21 1991-06-22 1991-12-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-12-21 1995-06-22 1995-12-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-12-21 1999-06-22 1999-12-22 $7700.00 Window Closed / Lapsed

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