GB1055372A - Seat suspension for a tractor and the like - Google Patents

Seat suspension for a tractor and the like

Info

Publication number
GB1055372A
GB1055372A GB2057465A GB2057465A GB1055372A GB 1055372 A GB1055372 A GB 1055372A GB 2057465 A GB2057465 A GB 2057465A GB 2057465 A GB2057465 A GB 2057465A GB 1055372 A GB1055372 A GB 1055372A
Authority
GB
United Kingdom
Prior art keywords
piston
conduit
cylinder
compartment
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2057465A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB1055372A publication Critical patent/GB1055372A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/50—Seat suspension devices
    • B60N2/505—Adjustable suspension including height adjustment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/50—Seat suspension devices
    • B60N2/52—Seat suspension devices using fluid means
    • B60N2/522—Seat suspension devices using fluid means characterised by dampening means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/50—Seat suspension devices
    • B60N2/52—Seat suspension devices using fluid means
    • B60N2/525—Seat suspension devices using fluid means using gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/50—Seat suspension devices
    • B60N2/52—Seat suspension devices using fluid means
    • B60N2/527—Seat suspension devices using fluid means using liquids

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)

Abstract

1,055,372. Resiliently mounted seats. M. A. E. VUICHARD. May 14, 1965 [May 14, 1964], No. 20574/65. Heading A4U. [Also in Division F2] In a seat suspension for a vehicle vertical movement of a seat pan 1 is transmitted by a bar 2 to a piston 3 which is movable in a cylinder 4 secured to the vehicle by brackets 7. Piston 3 divides cylinder 4 into compartments 5, 6. Compartment 5 is connected to a supply conduit 8 of a hydraullic circuit. The pressure in conduit 8 is maintained at a predetermined fixed operating pressure by a check valve 15. Compartment 6 communicates with a closed surge tank 20 and with an auxiliary cylinder 30 through a conduit 21. Cylinder 30 is divided into two compartments 32, 33 by a free piston 31. A body 22 of liquid completely fills compartments 6, 32 and conduit 21 and traps a cushion of air or nitrogen in tank 20. A conduit 34 connects compartment 33 with a return line 10 of the hydraulic circuit. The constant pressure in supply conduit 8 applied to piston 3 is counteracted by pressure of gas cushion 23. When seat 1 is displaced downwardly additional liquid is supplied to compartment 4 at constant pressure. When the vehicle moves over uneven ground gas cushion 23 is alternately compressed and contracted. A rapid rise of seat pan 1 is prevented by the damping effect inherent in the liquid system. A check valve 28 and throttle 27 may be provided to increase the damping effect. In a modification, Fig. 3 (not shown) vertical movements of seat pan 65 are transmitted to an axially movable piston 62 in a cylinder 60 by a lever 63, 64 pivoted at 66 and piston rod 61.
GB2057465A 1964-05-14 1965-05-14 Seat suspension for a tractor and the like Expired GB1055372A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR74000008 1964-05-14

Publications (1)

Publication Number Publication Date
GB1055372A true GB1055372A (en) 1967-01-18

Family

ID=8566566

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2057465A Expired GB1055372A (en) 1964-05-14 1965-05-14 Seat suspension for a tractor and the like

Country Status (1)

Country Link
GB (1) GB1055372A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000035708A1 (en) * 1998-12-15 2000-06-22 Volvo Wheel Loaders Ab Arrangement for a chair

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000035708A1 (en) * 1998-12-15 2000-06-22 Volvo Wheel Loaders Ab Arrangement for a chair

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