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Class 267/47 - Structure


Subclass of Class 267 - Spring devices
Definition: Device limited to the structure of the leaf-spring element,
No. of patents: 104
Last issue date: 12/25/2007


    3  
NumberTitleIssue Date
4637594Leaf spring construction
A leaf spring construction employs tapered leaf elements made from a steel sheet, where at least the tapered portion of the leaf elements have an arcuate shape in transverse cross-section with a convex surface on the tension side and a concave surface on ...
01/20/1987
4613152Composite transverse beam and spring system for an automobile
An elongate member with a composite construction has a pair of spring portions connected by an intermediate beam portion. The elongate member is connected to a uni-body or other vehicle frame so that it extends horizontally in a transverse direction acros...
09/23/1986
4579320Load supporting member
Improvements to the various components of hydrostatic bearing levitation systems, systems wherein fluid pressure between a load and the rails of a track system supports and guides the load, are described. The rail has a plurality of lengthwise extending p...
04/01/1986
4575912Spring steel
The invention relates to a steel and a process for its manufacture which is suitable for the production of springs, especially leafsprings for vehicles. The steel which is vacuum-treated is an ordinary low-carbon steel with 0.20-0.04% C. Its composition i...
03/18/1986
4575057Filament wound composite material leaf spring
A constant cross-sectional area filament wound composite material leaf spring of optional energy storage efficiency given the constraints of filament winding and maximum spring width comprises a portion which widens toward the end of the spring, the rate ...
03/11/1986
4557500Suspension for a motor vehicle by means of an elastic blade
A suspension consisting of an elastic leaf (17) made of a composite material, having in its plane of vertical symmetry a height which increases towards the end or ends supporting the wheels. The leaf is fixed to the chassis (21) at two points (22) which a...
12/10/1985
4556204Fiber reinforced resin leaf spring
A fiber reinforced resin leaf spring including a curved central section and a pair of generally circular end sections connected to the respective ends of the central section. Each end section defines an opening to receive a connecting member. The spring i...
12/03/1985
4546958Leaf spring
In a FRP leaf spring consisting of a main body and a rib, the main body has a taper portion so tapered that the thickness of the main body varies continuously along the longitudinal direction thereof, and the rib is projected integrally from the main body...
10/15/1985
4530490Fiber-reinforced plastics leaf spring
An FRP leaf spring wherein finer continuous fibers are embedded in that thickness range of the leaf spring to which tension stress is applied, and continuous fibers of greater diameters are embedded in that thickness range of the leaf spring to which comp...
07/23/1985
4519591Non-metallic leaf spring structure
A leaf spring is provided in which the major component is a leaf made up of continuous strands of fibers distributed in a matrix of polymerized plastic resin. The spring has a theoretical constant cross-sectional area and uniform width throughout its leng...
05/28/1985
4512559Leaf spring construction
A leaf spring construction including at least one leaf element made from a flat sheet of uniform width and thickness, the leaf element having an arcuate shape in the transverse cross-section with a convex surface on tension stress side and a concave surfa...
04/23/1985
4509774Composite control arm apparatus
Composite control arm apparatus combines the functions of dimensional integrity and flexibility to replace a control arm and a spring in the suspension of an automotive vehicle. Different embodiments of composite control arm apparatus are shown, some of w...
04/09/1985
4508325Composite leaf springs
An assembly of a leaf spring of composite, fibre reinforced resin, material, and a component secured to the spring by clamping means, wherein the relative positions of the spring and component are determined by a locating element with a head engaging in a...
04/02/1985
4475723Elongated spring member
An elongated spring member is formed of fiber reinforced plastics, particularly resin-impregnated glass fiber strands, and includes end provisions adjacent the two ends for the reception of attachment elements associated with the use of the spring. The sp...
10/09/1984
4468014Composite leaf spring
A composite leaf spring for use in a vehicle suspension system having a pair of metal outer skins and a stiff plastic core bonded between the skins. The core can be made of any one of a variety of filled or unfilled polymers which has a relatively high sh...
08/28/1984
4411159A fibre reinforced resin composite leaf spring for determining the magnitude of a load
A member of composite material incorporates at least one strain responsive member within a part at which a strain is induced by a load in use. A signal which is a function of a strain detetected by the strain responsive member is communicated to an indica...
10/25/1983
4313620Device for limiting lateral canting of road vehicles
The normally generally straight, slightly arcuate main leaf of an auxiliary or "helper" leaf spring bundle is modified to include loops at both ends thereof, enveloping the respective helper leaf bracket of the frame, to provide additional anti-sway resis...
02/02/1982
4054278Leaf spring assembly
A leaf spring assembly in which the leaves, except for the longest or spring-eye leaf, the leaf adjacent thereto, and the shortest leaf, are formed from bar stock by cutting same with an ogee or sloped S-shaped die section without producing any resultant ...
10/18/1977
3989425Unitized seal biasing spring assembly for rotary mechanisms
A long-lived, unitized seal biasing spring assembly for use in rotary mechanisms such as rotary engines. The rotary mechanism with which the invention is to be used includes an operating chamber and a rotor within the chamber. At least one seal retaining ...
11/02/1976
3975005Vehicle suspension spring
The spring comprises at least one spring leaf formed from a bar having a circular cross-section and flattened progressively toward each end. The portions of the bar defining the ends have a substantially rectangular cross-section. The center part of the b...
08/17/1976
3968958Composite material springs and manufacture
Light-weight, corrosion-resistant, elongated spring structure formed from fiber-reinforced composite material and method of manufacture in which a configuration-defining core portion is laid up from non-woven fiber plies of varying longitudinal dimension ...
07/13/1976
3960388Vehicle suspension system and alignment mechanism therefor
A suspension system for a vehicle such as a trailer or tractor wherein ground-engaging wheels on an axle are mounted on a pair of control arms, which in turn are pivotably mounted for vertical swinging motion at one end to frame brackets laterally dispose...
06/01/1976
3945625Leaf spring
A very light and high efficiency leaf spring made from a curved hollow tube with flattened opposite ends, cross section of said tube having a form which varies progressively from the center part of the tube towards each opposite ends but wall of the tube ...
03/23/1976
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