Class 248/576 - Plural springs

Subclass of Class 248 - Supports
Definition: Structure comprising a plurality of adjustable springs.
No. of patents: 38
Last issue date: 09/13/2011

Number	Title	Issue Date
8016258	Suspension adjustment mechanism for low suspension seat A seat support assembly includes a base, a plurality of arms each mounted at a first end to the base for movement with respect to the base, and mounted to a seat at a second end opposite the first end for movement with respect to the seat. A torsion spring has a fir...	09/13/2011
7341235	Fixture for a display unit A rack has a first shelf and a second shelf disposed upwardly of said first shelf, and a display unit is placed on the first shelf and disposed between the first shelf and the second shelf. The display unit is fixed to the second shelf by a display unit fixture. The...	03/11/2008
7255311	Stand, in particular for surgical microscopes, having an energy storage element The invention concerns a stand arrangement having an energy storage element (7) and a displacement apparatus (18b) for rotating and/or shifting the proximal articulation point (9a) of the energy storage element (7), and an o...	08/14/2007
7223338	Support element for an integrated module for blood treatment, an integrated module for blood treatment, and a manufacturing process for an integrated module for blood treatment The support element (4) is provided with a plurality of connectors (7), (8), (11) which receive corresponding counter-connectors of a blood treatment device. The support element is also predisposed to include a fluid distribution circuitr...	05/29/2007
7125078	Device for the adjustment of the compression force of the spring in an articulation for a chair A device for adjusting the compression force of the spring in an articulation of a seat of the type equipped with a mobile “rocket launcher”-type base, from which base there rises a column, adjustable in height, which supports a reciprocally hinged seat plane an...	10/24/2006
7032874	Suspension adjusting handle for a suspension system A suspension system for a seat. The suspension system includes a first frame member, a second frame member connectable to the seat and movably coupled to the first frame member, a suspension member coupled to both the first frame member and the second frame member a...	04/25/2006
7001099	Remote controlled parking barrier apparatus A barrier for the control of access of vehicles through a roadway, which uses stored mechanical energy to place the barrier in one of three states, one a blocking position and two non-blocking positions. The mechanical energy is derived from the weight of the vehicl...	02/21/2006
6929327	Chair with oscillating seat A chair, in particular an office chair, comprising: a base structure, a seat support structure, articulated to the base structure around a transverse axis, an adjustable elastic device to apply an elastic force between the base structure and the seat support structu...	08/16/2005
6923542	Operator supported remote camera positioning and control system with longeron based beam A remote camera positioning and control system is disclosed that permits a sole operator to use and support a camera out of arm's reach without external structural or personnel support. Various features of such a remote camera positioning and control system are disc...	08/02/2005
6357729	Weight adjusting mechanism for a suspension seat A weight adjusting mechanism is mounted in a suspension seat and includes a lower frame and an upper frame vertically movably mounted on the lower frame via a link mechanism. The upper and lower frames have respective permanent magnets mounted thereon wit...	03/19/2002
6003828	Means for supporting a mask To prevent tilting or bending of a large mask frame holder and at the same time to prevent distortion when the mask holding frame is attached to a support base by ball plungers in three of the four corner areas of a mask holding frame that engage V groove...	12/21/1999
5831780	Continually supported thin mirror with force-type actuators A continually supported assembly capable of being space launched includes a base and a thin optical substrate having a light collecting first surface and an opposite rear surface. An elastically coupling medium couples the rear surface of optical substrat...	11/03/1998
5490714	Metal crib structure for a rocking chair seating plane The invention relates to an improved metal crib structure for an armchair, having a fixed frame, constituted by two opposite lateral elements and a front and a back elements; a cradle-shaped seat support frame of the seating plane oscillating about a hori...	02/13/1996
5435515	Adustable, iso-elastic support apparatus The support arm of a camera stabilizing device is provided with a tensioning assembly which is mated to the support arm in a fashion which permits continuous adjustment of the geometric relationship between the end points of the tensioning assembly and th...	07/25/1995
5360196	Adjustable, iso-elastic support apparatus The support arm of a camera stabilizing device is provided with a tensioning assembly which is mated to the support arm in a fashion which permits continuous adjustment of the geometric relationship between the end points of the tensioning assembly and th...	11/01/1994
5263691	Helicopter load vibration damper A helicopter load vibration damper having an outer cylinder with closed upper and lower ends. A piston is slidably mounted within the cylinder to define a chamber between the piston and the cylinder's lower end. The chamber is pressurized with an inert ga...	11/23/1993
5180136	Counterbalance mechanism A counterbalance mechanism including a pair of interconnected parallelogram linkages provided with counterbalance springs, and an adjustment for simultaneously controlling the counterbalance effect of the springs....	01/19/1993
5154393	Seat suspension with downstop slide element for automatic slide gap adjustment A seat suspension including a downstop slide element having an overall width that automatically adjusts to compensate for dimensional variations between relatively stationary and movable frame parts of the seat suspension due to manufacturing tolerances a...	10/13/1992
4886232	Deflectable mounting for upright mast An upright mast is affixed to a horizontal support which is pivotally mounted on a horizontal shaft seated in a mounting base whereby abutting resilient members, such as springs, concentric with the shaft separately resist pivotal deflection in opposite d...	12/12/1989
4865288	Deflectable mounting An upright mast is affixed to a horizontal supporting means which is pivotally mounted on a horizontal shaft seated in a mounting base whereby a horizontal resilient member, such as a spring, concentric with the shaft separately resists pivotal deflection...	09/12/1989
4863138	Deflectable mounting for upright mast An upright mast for a sign, and the like, is pivotally mounted upon a base and shaft with two adjustable resilient members, such as springs, mounted between the base and mast for separately resisting pivotal deflection in opposite directions....	09/05/1989
4838510	Seat mounting for office chairs Seat mounting, especially for office chairs, having a frame attachable to the lower side of the chair and provided with a pivotal holder for the back-rest and a pivotal holder for the support column of the chair. Secured between said holders and said fram...	06/13/1989
4786106	Rocking chair construction and method of making same A rocking chair has an aluminum frame chair portion that is mounted to a base by a pair of coil springs that provide rocking action to the chair. The springs are fixedly attached to the base and each spring has an outwardly extending portion that is attac...	11/22/1988
4778037	Vibration or shock isolators with tension and compression springs arranged equiangularly in a rosette An isolator includes a load bearing part arranged for deflection against the action of a series of compression springs and tension springs whose axes are pivotal with respect to the axis of deflection. The arrangement is such that the isolator can operate...	10/18/1988
4702454	Buffer device for use to the seats of vehicles A buffer device for use to the seats of vehicles provided with a pair of links arranged parallel to each other between floor brackets and an upper frame of the seat to form a parallel linkage mechanism. The upper ends of the links are swingably attached t...	10/27/1987
4699257	Variable frequency vibration isolator A variable frequency vibration isolator for isolating vibrations between a base and a load having relative displacement of each other characterized by a pair of coil springs in series with a connector between them. The connector is journally mounted for a...	10/13/1987
4648578	Weight adjustment device for a seat suspension A weight adjustment device for a seat suspension to be provided in a seat for a vehicle such as an automobile is disclosed in which an upper frame and a lower frame are connected to each other by means of links, a rotary shaft is journalled between the tw...	03/10/1987
4615591	Mechanical positioning device for scientific instruments The invention comprises a compact substantially frictionless positioning device for guiding the motion of an object accurately along one or two axes. The object is supported on a pair of parallel motion solid hinges disposed either side of the axis of mot...	10/07/1986
4611089	Thermoelectric converter A thermoelectric converter includes a heat source having a mating face and a heat sink also having a mating face. The converter also includes a thermoelectric conversion module positioned between these faces. The module includes an electrically insulative...	09/09/1986
4583158	High voltage thyristor valve A high voltage thyristor valve of the air insulation type erected upright on a valve hall is disclosed, which comprises a thyristor valve body erected in the valve hall and a plurality of reinforcing means stretched between the thyristor valve body and in...	04/15/1986
4557459	Load counterbalancing mechanisms A load counterbalancing mechanism wherein the mechanically actuated interaction of two independent spring systems, one of which is adjustable, provides the necessary counterbalancing forces to balance the torque forces set up by a load being raised, lower...	12/10/1985
4455010	Resilient support A resilient support for seats comprising telescoping members with a plurality of resilient members positioned therein in a series relationship with the telescoping members' relative movement; a plurality of resilient members stacked in a series relationsh...	06/19/1984
4362335	Adjustable chair backrest mechanism using pneumatic and mechanical springs A chair provided with a seat carrier and an associated backrest carrier includes a pneumatic spring connected between the seat carrier and backrest carrier, and a mechanical draw spring one end of which is connected directly to the backrest carrier and th...	12/07/1982
4241894	Seat suspension apparatus A seat suspension apparatus comprises a pair of parallel link assemblies and a pair of balance springs. In order to reduce the elevation of the seating surface relative to a support base and to assure a stabilized suspension when the seating surface is de...	12/30/1980
4186963	Upright vehicle seat support This invention relates to supports, for vehicle seats, having a generally upright configuration. Provision of a plurality of seat adjustments, for operator comfort and safety, performable with an economy of movement and structure which tends to maximize f...	02/05/1980
4151973	Spring controlled shock absorbing seat A seat mounting structure is provided including a stationary base and a generally horizontal seat support assembly disposed above the base. Spring controlled pivoted levers and connecting links support the assembly above the base for vertical movement rel...	05/01/1979
4103858	Seat support assembly for a recreational vehicle A seat supporting assembly for use in recreational vehicles such as motorcycles or the like and which includes pivotable arms between the vehicle frame and the seat for supporting the seat for generally linear vertical movement and further includes a spri...	08/01/1978
4013257	Chair control A chair control, having a basic mechanism which can be modified slightly for use in swivel tilt, stenographer's and double action posture chairs. The basic chair control mechanism includes a pair of chair seat supporting arms, a screw post cap which mount...	03/22/1977

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Class 248/576 - Plural springs