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| Number | Title | Issue Date |
| 4637594 | Leaf 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 |
| 4613152 | Composite 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 |
| 4579320 | Load 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 |
| 4575912 | Spring 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 |
| 4575057 | Filament 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 |
| 4557500 | Suspension 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 |
| 4556204 | Fiber 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 |
| 4546958 | Leaf 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 |
| 4530490 | Fiber-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 |
| 4519591 | Non-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 |
| 4512559 | Leaf 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 |
| 4509774 | Composite 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 |
| 4508325 | Composite 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 |
| 4475723 | Elongated 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 |
| 4468014 | Composite 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 |
| 4411159 | A 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 |
| 4313620 | Device 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 |
| 4054278 | Leaf 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 |
| 3989425 | Unitized 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 |
| 3975005 | Vehicle 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 |
| 3968958 | Composite 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 |
| 3960388 | Vehicle 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 |
| 3945625 | Leaf 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 |