WO2005095153A1 - Quick evacuation of air in an air sprung chair - Google Patents

Quick evacuation of air in an air sprung chair Download PDF

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Publication number
WO2005095153A1
WO2005095153A1 PCT/SE2005/000334 SE2005000334W WO2005095153A1 WO 2005095153 A1 WO2005095153 A1 WO 2005095153A1 SE 2005000334 W SE2005000334 W SE 2005000334W WO 2005095153 A1 WO2005095153 A1 WO 2005095153A1
Authority
WO
WIPO (PCT)
Prior art keywords
seat
air
sitting portion
sprung
fastening point
Prior art date
Application number
PCT/SE2005/000334
Other languages
French (fr)
Inventor
Kenneth Söder
Johan KNÄLMANN
Original Assignee
Scania Cv Ab (Publ)
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 Scania Cv Ab (Publ) filed Critical Scania Cv Ab (Publ)
Priority to DE112005000744T priority Critical patent/DE112005000744T5/en
Publication of WO2005095153A1 publication Critical patent/WO2005095153A1/en

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
    • B60N2/501—Seat suspension devices actively controlled suspension, e.g. electronic control
    • 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
    • B60N2/502—Seat suspension devices attached to the base of the seat
    • 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
    • B60N2/525—Seat suspension devices using fluid means using gas

Definitions

  • the present invention relates to an air-sprung seat for a vehicle.
  • Heavy vehicles e.g. trucks, often have a cab which is resiliently sprung, at three or four different points, relative to the vehicle's frame.
  • a stabiliser the purpose of which is to damp out the various kinds of resilient movements which may occur at the various suspension points.
  • a forward stabiliser comprises a transverse torsion bar which has at each of its axial ends a link arm running in the longitudinal direction of the vehicle. The link arm is directly or indirectly supported at one end relative to the cab and at the other end relative to the frame. At the support points, vibrations from the frame may readily be propagated to the cab and be perceived as disturbing to the driver or to a passenger sitting alongside the driver.
  • the driving seat and the passenger seat respectively may be resiliently suspended relative to the vehicle cab.
  • the sitting portion of the seats may be arranged resiliently.
  • the driving seat may be arranged in the same manner to prevent vibrations from reaching the driver via the seat.
  • the resilient suspension is usually arranged by providing the seat concerned with air springing.
  • air-sprung seats are usually provided with a manually controlled or automatic device for preventing the seat from moving upwards to any great extent when a person leaves the seat.
  • US 3 218 020 A refers to an air-sprung seat whereby the seat moves only somewhat in an upward direction when the driver leaves the sitting portion of the seat, after which the air from the air springing of the seat is released automatically, thereby preventing further rise of the seat and hence preventing the vehicle driver from being squeezed between the steering wheel and the driving seat.
  • US 4 264 050 A refers to an air-sprung seat whereby the seat moves only somewhat in an upward direction when the driver leaves the sitting portion of the seat, after which the air is released automatically from the air springing of the seat, thereby lowering the seat to its lowest possible position and hence preventing the vehicle driver from being squeezed between the steering wheel and the driving seat.
  • EP 0 485 053 A2 refers to an air-sprung seat whereby the seat moves only somewhat in an upward direction when the driver leaves the sitting portion of the seat, after which the seat is automatically locked mechanically in a vertical direction without the air from the air springing of the seat being released, thereby preventing further rise of the seat and hence preventing the vehicle driver from being squeezed between the steering wheel and the driving seat.
  • a problem with air-sprung seats of the kind described in the documents mentioned above is that when a person has to rise from the seat the seat moves upwards before the respective emptying of the air springing or locking of the seat in a vertical direction is activated.
  • the problem that, when a person has to rise from the seat, the seat moves upwards before emptying of the air springing or locking of the seat in a vertical direction is activated, is solved according to the invention by arranging an air-sprung seat according to claim 1.
  • the seat comprising the characteristics of claim 1 affords the advantage of preventing upward movement of an air-sprung seat when a person has to rise from the seat.
  • Figure 1 depicts schematically a view of a seat intended for a vehicle and comprising a seat suspension, a sitting portion and a back support,
  • Figure 2 depicts schematically a view from above of a seat according to Fig. 1, and
  • Figure 3 depicts schematically a vertical section III-III according to Fig. 2 along the longitudinal direction of the vehicle.
  • Figure 1 depicts schematically a view of a seat 4 which is intended for a vehicle 2 and which comprises a seat suspension 6 sprung by air springing 7, a sitting portion 8, and a back support 10, and a person 12 sitting on the seat 4.
  • Figure 2 depicts schematically a view from above of a seat 4 according to Figure 1, more specifically the sitting portion 8 and the back support 10. It also indicates by broken lines fastening points 14,16,18,20 which are situated below the sitting portion 8 of the seat and at which the sitting portion 8 can be fastened or movably fastened to the seat suspension 6 (see Fig. 1).
  • the number of fastening points 14,16,18,20 of the sitting portion is preferably four but may also be larger or smaller than four. In the case of three fastening points, two of them are preferably arranged at the rear edge of the sitting portion 8 as seen in the vehicle's longitudinal direction.
  • fastening points 14,16,18,20 these are preferably each arranged close to their respective corners of the sitting portion and are here referred to, relative to the vehicle's longitudinal direction, as the inner rear fastening point 14, the inner forward fastening point 16, the outer rear fastemng point 18 and the outer forward fastening point 20, the inner fastening points being situated close to the vehicle's centreline and the outer fastening points being situated along the side of the vehicle.
  • the drawing thus depicts a seat situated on the left side of the vehicle 2.
  • the sitting portion 8 is fastened to the seat suspension 6 by fastening devices 22,24,26,28 at at least one forward fastening point 16,20 and one rear fastening point 14,18.
  • fastening devices 22,24,26,28 preferably only one fastening device 22
  • this fastening device 22 is arranged at the inner rear fastening point 14 on the sitting portion 8, resulting in the fastest possible action upon an automatic activation device 23 for emptying the air springing 7 of the seat 4, which activation device 23 is arranged relative to, or is integrated with, the fastening device 22.
  • the invention thus relates to an air-sprung seat 4 for a vehicle 2 whereby the sitting portion 8 of the seat 4 is fastening to the seat suspension 6 at at least one rear outer fastening point 18 and at least one forward fastening point 16,20, and whereby an automatic activation device 23 for emptying the air springing 7 of the seat 4 is arranged at the rear inner fastening point 14 where vertical movement between the sitting portion 8 and the seat suspension 6 is possible, which automatic emptying activation device 23 in an unloaded state keeps open a connection between the air springing 7 and the surrounding atmosphere, and in a loaded state closes said connection, thereby preventing the seat 4 from rising when a person 12 on the seat 4 has to alight from the vehicle 2.
  • Figure 3 depicts schematically a vertical section III-III according to Fig. 2 along the longitudinal direction of the vehicle. It depicts the seat sitting portion 8, the seat suspension 6 and, arranged between them, a fastening device 22 which is fastened at the inner rear fastening point 14 in the sitting portion 8 and is of such a kind as to allow vertical movement between the sitting portion 8 and the seat suspension 6.
  • An automatic activation device 23 which is for emptying the air springing 7 of the seat 4 and is arranged relative to, or is integrated with, the fastening device 22 may also be seen.
  • the fastening device 24 which is fastened to the forward inner fastening point 16 on the sitting portion 8 and which is here of a kind which does not allow vertical movement between the sitting portion 8 and the seat suspension 6.
  • the automatic emptying activation device 23 comprises a resilient element 25.
  • the resilient element 25 pushes the seat suspension 6 and the sitting portion 8 apart from one another at the fastening point concerned, which in this case is the rear inner fastening point 14, whereupon a valve 27 to the air springing 7 opens and air is released from the air springing 7 to the surrounding atmosphere.
  • the resilient element 25 may be a coil spring, a leaf spring or some other form of resilient element and may be made of metal, plastic or other resilient material.
  • the resilient element 25 and the rotational rigidity of the sitting portion 8 are determined in such a way that the abovementioned function with movement between the seat suspension 6 and the sitting portion 8 is achieved.
  • the person 12 on the seat 4 may alternatively set, e.g. mechanically or electronically, the sensitivity of the automatic activation device 23 for emptying the seat's air springing 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

The invention relates to an air-sprung seat 4 for a vehicle 2 whereby the sitting portion 8 of the seat 4 is fastened to the seat suspension 6 at at least one rear outer fastening point 18 and at least one forward fastening point 16,20, and whereby an activation device 23 for emptying the air springing 7 of the seat 4 is arranged at the rear inner fastening point 14 where vertical movement between the sitting portion 8 and the seat suspension 6 is possible, which emptying activation device 23 in an unloaded state keeps open a connection 27 between the air springing 7 and the surrounding atmosphere, and in a loaded state closes said connection 27, thereby preventing the seat 4 from rising when a person 12 on the seat 4 has to alight from the vehicle 2.

Description

QUICK EVACUATION OF AIR IN AN AIR SPRUNG CHAIR.
Technical field
The present invention relates to an air-sprung seat for a vehicle.
Background
Heavy vehicles, e.g. trucks, often have a cab which is resiliently sprung, at three or four different points, relative to the vehicle's frame. Such vehicles are often provided with a stabiliser, the purpose of which is to damp out the various kinds of resilient movements which may occur at the various suspension points. In such cases a forward stabiliser comprises a transverse torsion bar which has at each of its axial ends a link arm running in the longitudinal direction of the vehicle. The link arm is directly or indirectly supported at one end relative to the cab and at the other end relative to the frame. At the support points, vibrations from the frame may readily be propagated to the cab and be perceived as disturbing to the driver or to a passenger sitting alongside the driver. To prevent these vibrations from reaching the vehicle's driver or passenger via the seat, the driving seat and the passenger seat respectively may be resiliently suspended relative to the vehicle cab. Alternatively, the sitting portion of the seats may be arranged resiliently. In buses too the driving seat may be arranged in the same manner to prevent vibrations from reaching the driver via the seat. The resilient suspension is usually arranged by providing the seat concerned with air springing. To prevent an air-sprung seat in a vehicle from moving powerfully upwards when a person sitting on the seat rises in order to alight from the vehicle and hence resulting in it being difficult for the person to alight or in the vehicle driver being squeezed between the seat and the steering wheel, air-sprung seats are usually provided with a manually controlled or automatic device for preventing the seat from moving upwards to any great extent when a person leaves the seat.
An example of an air-sprung seat is referred to in US 3 218 020 A, which refers to an air-sprung seat whereby the seat moves only somewhat in an upward direction when the driver leaves the sitting portion of the seat, after which the air from the air springing of the seat is released automatically, thereby preventing further rise of the seat and hence preventing the vehicle driver from being squeezed between the steering wheel and the driving seat.
Another example of an air-sprung seat is referred to in US 4 264 050 A, which refers to an air-sprung seat whereby the seat moves only somewhat in an upward direction when the driver leaves the sitting portion of the seat, after which the air is released automatically from the air springing of the seat, thereby lowering the seat to its lowest possible position and hence preventing the vehicle driver from being squeezed between the steering wheel and the driving seat.
A further example of an air-sprung seat is referred to in EP 0 485 053 A2, which refers to an air-sprung seat whereby the seat moves only somewhat in an upward direction when the driver leaves the sitting portion of the seat, after which the seat is automatically locked mechanically in a vertical direction without the air from the air springing of the seat being released, thereby preventing further rise of the seat and hence preventing the vehicle driver from being squeezed between the steering wheel and the driving seat.
A problem with air-sprung seats of the kind described in the documents mentioned above is that when a person has to rise from the seat the seat moves upwards before the respective emptying of the air springing or locking of the seat in a vertical direction is activated.
Brief description of the invention
The problem that, when a person has to rise from the seat, the seat moves upwards before emptying of the air springing or locking of the seat in a vertical direction is activated, is solved according to the invention by arranging an air-sprung seat according to claim 1. The seat comprising the characteristics of claim 1 affords the advantage of preventing upward movement of an air-sprung seat when a person has to rise from the seat.
Brief list of the drawings
The invention is explained in more detail below with reference to the attached drawings, in which:
Figure 1 depicts schematically a view of a seat intended for a vehicle and comprising a seat suspension, a sitting portion and a back support,
Figure 2 depicts schematically a view from above of a seat according to Fig. 1, and
Figure 3 depicts schematically a vertical section III-III according to Fig. 2 along the longitudinal direction of the vehicle.
Description of preferred embodiments
The same reference notations are used for the same features in the various drawings.
Figure 1 depicts schematically a view of a seat 4 which is intended for a vehicle 2 and which comprises a seat suspension 6 sprung by air springing 7, a sitting portion 8, and a back support 10, and a person 12 sitting on the seat 4.
Figure 2 depicts schematically a view from above of a seat 4 according to Figure 1, more specifically the sitting portion 8 and the back support 10. It also indicates by broken lines fastening points 14,16,18,20 which are situated below the sitting portion 8 of the seat and at which the sitting portion 8 can be fastened or movably fastened to the seat suspension 6 (see Fig. 1). The number of fastening points 14,16,18,20 of the sitting portion is preferably four but may also be larger or smaller than four. In the case of three fastening points, two of them are preferably arranged at the rear edge of the sitting portion 8 as seen in the vehicle's longitudinal direction. In the embodiment with four fastening points 14,16,18,20, these are preferably each arranged close to their respective corners of the sitting portion and are here referred to, relative to the vehicle's longitudinal direction, as the inner rear fastening point 14, the inner forward fastening point 16, the outer rear fastemng point 18 and the outer forward fastening point 20, the inner fastening points being situated close to the vehicle's centreline and the outer fastening points being situated along the side of the vehicle. The drawing thus depicts a seat situated on the left side of the vehicle 2.
The sitting portion 8 is fastened to the seat suspension 6 by fastening devices 22,24,26,28 at at least one forward fastening point 16,20 and one rear fastening point 14,18. An alternative is that at least one of the fastening devices 22,24,26,28, preferably only one fastening device 22, is of a kind which allows vertical movement between the sitting portion 8 and the seat suspension 6. In that case this fastening device 22 is arranged at the inner rear fastening point 14 on the sitting portion 8, resulting in the fastest possible action upon an automatic activation device 23 for emptying the air springing 7 of the seat 4, which activation device 23 is arranged relative to, or is integrated with, the fastening device 22. Another alternative is that no fastening device is arranged at the inner rear fastening point 14 and that the activation device 23 for emptying the air springing 7 of the seat 4 is arranged at this fastening point 14. It is this inner rear fastening point 14 which is acted upon most quickly by the movement pattern of a person 12 who has to alight from the vehicle 2, since the person 12 usually first shifts his/her body weight towards the outer fastening points 18,20 or the forward fastening points 16,20, and particularly towards the outer forward fastening point 20, before the person 12 rises from the seat 4 in order to alight from the vehicle 2.
The invention thus relates to an air-sprung seat 4 for a vehicle 2 whereby the sitting portion 8 of the seat 4 is fastening to the seat suspension 6 at at least one rear outer fastening point 18 and at least one forward fastening point 16,20, and whereby an automatic activation device 23 for emptying the air springing 7 of the seat 4 is arranged at the rear inner fastening point 14 where vertical movement between the sitting portion 8 and the seat suspension 6 is possible, which automatic emptying activation device 23 in an unloaded state keeps open a connection between the air springing 7 and the surrounding atmosphere, and in a loaded state closes said connection, thereby preventing the seat 4 from rising when a person 12 on the seat 4 has to alight from the vehicle 2.
Figure 3 depicts schematically a vertical section III-III according to Fig. 2 along the longitudinal direction of the vehicle. It depicts the seat sitting portion 8, the seat suspension 6 and, arranged between them, a fastening device 22 which is fastened at the inner rear fastening point 14 in the sitting portion 8 and is of such a kind as to allow vertical movement between the sitting portion 8 and the seat suspension 6. An automatic activation device 23 which is for emptying the air springing 7 of the seat 4 and is arranged relative to, or is integrated with, the fastening device 22 may also be seen. Also depicted is the fastening device 24 which is fastened to the forward inner fastening point 16 on the sitting portion 8 and which is here of a kind which does not allow vertical movement between the sitting portion 8 and the seat suspension 6. The automatic emptying activation device 23 comprises a resilient element 25. When the sitting portion 8 is unloaded, the resilient element 25 pushes the seat suspension 6 and the sitting portion 8 apart from one another at the fastening point concerned, which in this case is the rear inner fastening point 14, whereupon a valve 27 to the air springing 7 opens and air is released from the air springing 7 to the surrounding atmosphere.
When the valve 27 is open, no air goes into the air springing. Conversely, if the sitting portion 8 is loaded, the resilient element 25 is pressed together by the weight of the person 12 sitting on the sitting portion 8, whereby the seat suspension 6 and the sitting portion 8 are pressed together at the fastening point concerned and the valve 27 stops the outflow of air from the air springing 7. When the valve 27 is closed, the pressure in the air springing 7 is controlled in a traditional manner with respect to desired settings. The resilient element 25 may be a coil spring, a leaf spring or some other form of resilient element and may be made of metal, plastic or other resilient material. The resilient element 25 and the rotational rigidity of the sitting portion 8 are determined in such a way that the abovementioned function with movement between the seat suspension 6 and the sitting portion 8 is achieved. The person 12 on the seat 4 may alternatively set, e.g. mechanically or electronically, the sensitivity of the automatic activation device 23 for emptying the seat's air springing 7.

Claims

Claims
1. An air-sprung seat (4) for a vehicle (2) whereby the sitting portion (8) of the seat (4) is fastened to the seat suspension (6) at at least one rear outer fastening point (18) and at least one forward fastening point (16, 20), characterised in that an automatic activation device (23) for emptying the air springing (7) of the seat (4) is arranged at the rear inner fastening point (14) where vertical movement between the sitting portion (8) and the seat suspension (6) is possible, which automatic emptying activation device (23) in an unloaded state keeps open a connection (27) between the air springing (7) and the surrounding atmosphere, and in a loaded state closes said connection (27), thereby preventing the seat (4) from rising when a person (12) on the seat (4) has to alight from the vehicle (2).
2. An air-sprung seat (4) according to claim 1, characterised in that a fastening device (22) of a kind which allows vertical movement between the sitting portion (8) and the seat suspension (6) is arranged at the rear inner fastening point (14).
3. An air-sprung seat (4) according to claim 2, characterised in that the automatic emptying activation device (23) is integrated with the fastening device (22) which allows vertical movement between the sitting portion (8) and the seat suspension (6).
4. An air-sprung seat (4) according to any one of the foregoing claims, characterised in that the automatic emptying activation device (23) comprises a resilient element (25) which, when the sitting portion (8) is unloaded, pushes the seat suspension (6) and the sitting portion (8) apart from one another at the rear inner fastening point (14), whereupon a valve (27) to the air springing (7) opens and air is released from the air springing (7) to the surrounding atmosphere.
5. An air-sprung seat (4) according to claim 4, characterised in that when the sitting portion (8) is loaded the resilient element (25) is pressed together by the weight of the person (12) sitting on the sitting portion (8), whereupon the seat suspension (6) and the sitting portion (8) are pressed together at the fastening point concerned and the valve (27) stops the outflow of air from the air springing (7).
An air-sprung seat (4) according to claim 4 or 5, characterised in that the resilient element (25) is a coil spring, a leaf spring or some other form of resilient element and is made of metal, plastic or other resilient material, and that the resilient element (25) and the rotational rigidity of the sitting portion (8) are determined in such a way that the abovementioned function with movement between the seat suspension (6) and the sitting portion (8) is achieved.
PCT/SE2005/000334 2004-03-31 2005-03-07 Quick evacuation of air in an air sprung chair WO2005095153A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112005000744T DE112005000744T5 (en) 2004-03-31 2005-03-07 Quick evacuation of air in an air-sprung seat

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0400852-0 2004-03-31
SE0400852A SE526892C2 (en) 2004-03-31 2004-03-31 Air suspension chair

Publications (1)

Publication Number Publication Date
WO2005095153A1 true WO2005095153A1 (en) 2005-10-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2005/000334 WO2005095153A1 (en) 2004-03-31 2005-03-07 Quick evacuation of air in an air sprung chair

Country Status (3)

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DE (1) DE112005000744T5 (en)
SE (1) SE526892C2 (en)
WO (1) WO2005095153A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7934708B2 (en) 2006-12-18 2011-05-03 Grammer Ag Air spring for a vehicle seat, and vehicle seat comprising such an air spring
US7997600B2 (en) 2007-11-24 2011-08-16 Grammer Ag Apparatus comprising a suspension system and method for adjusting a suspension system
US8182038B2 (en) 2008-05-03 2012-05-22 Grammer Ag Vehicle seat having a device for controlling a pneumatic suspension system
US8366195B2 (en) 2007-07-14 2013-02-05 Grammer Ag Vehicle seat with a base frame and a seat frame moveable relative to that base frame
US8439334B2 (en) 2008-10-23 2013-05-14 Grammer Ag Spring-mounted vibration system to reduce vibration
US8540316B2 (en) 2008-11-06 2013-09-24 Grammer Ag Scissors-type frame for a vehicle seat and method for producing a substructure of a vehicle seat
US9115781B2 (en) 2009-01-21 2015-08-25 Grammar Ag Device for springing a mass, and method for adjusting and/or operating a fluid spring

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016000113B4 (en) * 2016-01-07 2018-12-20 Isringhausen Gmbh & Co. Kg Height-adjustable vehicle seat and method for controlling the determination of the height of the vehicle seat

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Publication number Priority date Publication date Assignee Title
US3218020A (en) * 1964-03-16 1965-11-16 Caterpillar Tractor Co Resilient seat mounting
US4264050A (en) * 1979-04-02 1981-04-28 The Freedman Seating Company Seat leveling device
GB2096733A (en) * 1981-03-10 1982-10-20 Uop Inc A self-levelling suspension system for a vehicle seat
EP0485053A2 (en) * 1990-11-07 1992-05-13 Sears Manufacturing Company Apparatus for controlling and protecting a vehicle seat suspension
US5735509A (en) * 1996-02-08 1998-04-07 Sears Manufacturing Company Seat suspension assembly

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4264060A (en) 1977-02-25 1981-04-28 Automated Production Systems Corporation Apparatus for treating metallic scrap in the recovery of metal therefrom

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3218020A (en) * 1964-03-16 1965-11-16 Caterpillar Tractor Co Resilient seat mounting
US4264050A (en) * 1979-04-02 1981-04-28 The Freedman Seating Company Seat leveling device
GB2096733A (en) * 1981-03-10 1982-10-20 Uop Inc A self-levelling suspension system for a vehicle seat
EP0485053A2 (en) * 1990-11-07 1992-05-13 Sears Manufacturing Company Apparatus for controlling and protecting a vehicle seat suspension
US5735509A (en) * 1996-02-08 1998-04-07 Sears Manufacturing Company Seat suspension assembly

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7934708B2 (en) 2006-12-18 2011-05-03 Grammer Ag Air spring for a vehicle seat, and vehicle seat comprising such an air spring
US8366195B2 (en) 2007-07-14 2013-02-05 Grammer Ag Vehicle seat with a base frame and a seat frame moveable relative to that base frame
US7997600B2 (en) 2007-11-24 2011-08-16 Grammer Ag Apparatus comprising a suspension system and method for adjusting a suspension system
US8182038B2 (en) 2008-05-03 2012-05-22 Grammer Ag Vehicle seat having a device for controlling a pneumatic suspension system
US8439334B2 (en) 2008-10-23 2013-05-14 Grammer Ag Spring-mounted vibration system to reduce vibration
US8540316B2 (en) 2008-11-06 2013-09-24 Grammer Ag Scissors-type frame for a vehicle seat and method for producing a substructure of a vehicle seat
US9115781B2 (en) 2009-01-21 2015-08-25 Grammar Ag Device for springing a mass, and method for adjusting and/or operating a fluid spring

Also Published As

Publication number Publication date
SE0400852D0 (en) 2004-03-31
DE112005000744T5 (en) 2008-07-03
SE0400852L (en) 2005-10-01
SE526892C2 (en) 2005-11-15

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