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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Dunlop Limited Patents
Assignee:
Dunlop Limited
Address:
London, EN
No. of patents:
277
Patents:


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Patent Number Title Of Patent Date Issued
3972973 Method of making rubber and polyester structures August 3, 1976
A composite structure comprises an unsaturated hydrocarbon rubber, polychloroprene or a chloroprene/hydrocarbon copolymer bonded without an adhesive layer to a polymer being a reaction product of at least one aliphatic dihydric alcohol and at least one aromatic compound having two ac
3972842 Reclamation of fluoropolymers August 3, 1976
Polyhydroxy-cured vinylidene fluoride fluoropolymer is reclaimed by masticating the polymer to at least the stage of initial break-down of the cured polymer network, treating the masticated polymer with hot concentrated nitric acid to cause the polymer to swell and then removing the
3968825 Vehicle wheels July 13, 1976
A pneumatic tire and vehicle wheel assembly, the wheel being of the split-rim type without a tire mounting well in the base portion of the rim. A support member is provided extending radially fr0m the base portion of the rim to contact and support the tread region of the tire when the
3966536 Tire building machinery June 29, 1976
A folding bag comprises an inflatable tube supported on a cylindrical support, the tube being secured on both sides to two cord ply arrangements consisting of at least two intersecting plies, the angle of intersection of the first cord ply arrangement being greater than that of the secon
3965286 Spacer-damper for overhead power transmission lines June 22, 1976
A spacer-damper for a sub-conductor bundle of two or more sub-conductors of an overhead power transmission line comprising an arm for each sub-conductor, each arm having provided at one end a clamp for attachment to a sub-conductor and at the other end a resilient connection connecting
3964532 Pneumatic tires June 22, 1976
A pneumatic tire having a tread portion with substantially flat ground-contacting surface, beads and sidewalls; the tread being braced by a breaker assembly. The tread of the tire has a width at least 20% greater than the distance between the bead heels of the inflated tire on its rim.
3961829 Improvements in or relating to resilient mountings June 8, 1976
A resilient mounting comprising an outer rigid member formed with an aperture in which is situated an inner rigid member, a deformable first annular element extending between the inner and outer rigid members, and a second annular element being located between the inner and outer rigid
3958076 Spacer damper for overhead power transmission lines May 18, 1976
A spacer-damper for overhead power transmission lines wherein a rigid arm is provided for each sub-conductor mounted on a rigid frame by a damped resilient connection member which provides damped resilient movement in all directions of arm movement.
3957525 Road surfacing materials May 18, 1976
A road surfacing material consisting of binder and aggregate. The aggregate used is a blend of materials having differing rates of wear, each having a surface micro-texture in the range defined by asperity heights of a minimum texture depth of 5 microns and maximum texture depth of 500
3957300 Tire handling device May 18, 1976
A ring of paddles is provided the lower ends of which are engageable under the upper bead of a longitudinally-lying tire for lifting the latter and positioning it in a press. The paddles define an enclosure for the press diaphragm to prevent the latter "ballooning" out above a tire or ti
3952670 Railway vehicle primary suspensions April 27, 1976
A railway vehicle having a primary suspension with a reduced longitudinal stiffness at the axle comprising a downwardly inclined pair of longitudinally opposed elastomeric material springs mounted to the axlebox such that the axis of the axleset is substantially vertically displaced
3951563 Manufacture of vehicle disc wheels April 20, 1976
A method of truing a spigot located disc wheel comprising clamping the wheel between two adaptors, rotating the wheel, measuring the radial displacements at each bead seat, and operating a borer in response to the displacements to bore a central spigot hole in the true center of the
3951438 Fastening means April 20, 1976
A fastening means, such as a hose end fitting comprising a metallic member formed with a serrated surface, and a layer of polymeric material arranged to cover the serrated surface, the surface of the layer of polymeric material both facing and remote from the serrated surface being capab
3951240 Frictional disc arrangement for a disc brake April 20, 1976
A disc brake comprising a number of interleaved rotor and stator elements and a brake actuator which is arranged to urge the rotor and stator elements into engagement in order to apply the brake. The engagement surfaces of the rotors and stators are provided with areas of carbon and
3951226 Skid-control system April 20, 1976
A method and apparatus for preventing a continuing non-rotating wheel condition in a wheel on a moving vehicle, comprising applying, by means for driving the wheel, a positive drive to the wheel to drive the wheel up to a predetermined low speed and disengaging, by means for disengaging
3946787 Apparatus for use in removing tires from and mounting tires on wheel rims March 30, 1976
Apparatus for use in mounting tires on and removing tires from wheel rims including wheel supporting means comprising a plurality of gripping arms and claws, each claw being provided with an extension block for supporting the adjacent bead and lower sidewall of the tire on the wheel rim
3946783 Pneumatic tires March 30, 1976
A tire and wheel assembly having a lubricant to enable it to be operated in a deflated condition without destructive heating in which one or more ingredients of the lubricant composition are enclosed in an enclosing means, the other ingredient or ingredients of the composition being plac
3941177 Pneumatic tires March 2, 1976
A pneumatic tire is provided with at least one radially disposed ply of steel cord fabric turned-up around each bead core to terminate axially outwardly thereof and has a chafer strip disposed adjacent to and axially outwardly of each turn-up. The chafer strip comprises a folded strip of
3938921 Moulds February 17, 1976
A multi-piece mould, and a method of constructing it, for moulding wire reinforced rubber articles; the mould comprises material having a greater coefficient of expansion than said wire, and having a gasket of thermoplastic material which soften at the temperature of moulding, provid
3938576 Rims for pneumatic tires February 17, 1976
A divided or one piece wheel rim comprising two tire bead retaining flanges with inclined bead seating portions and a substantially flat well base portion positioned therebetween. A radially inwardly tapering groove being provided adjacent the toe portion of an associated tire bead.
3936208 Reflector stud February 3, 1976
A road marker stud of cat's eye is made of a rubber housing and is to be adhered to the road surface. The housing is provided with surface channels or cavities which divide it into substantially independent flex zones.At least one reflector element is housed in a side face of the housing, th
3934686 Carbon friction members having torque transmitting formations January 27, 1976
A carbon brake disc has its torque transmitting formations (keyways or keys) reinforced by filament reinforced carbon inserts which are preferably located, and may be bonded, in cut-out areas of the disc periphery. The formations are formed by a separate series of operations from tho
3932015 Support means for an electrically operated tool January 13, 1976
A handle for an electrically-operated hand-held tool such as a hedge trimmer is formed with a body having similar terminals at its opposite axial ends. The handle body can make a plug-and-socket connection with the tool housing in any chosen one of a number of different positions ang
3931843 Pneumatic tires January 13, 1976
A tire and wheel assembly having a lubricant to enable it to be operated in a deflated condition without destructive heating in which one or more ingredients of the lubricant composition are enclosed in an enclosing means, the other ingredient or ingredients of the composition being plac
3930530 Clamping device January 6, 1976
A clamping device for a workpiece, in particular a wheel during a tire changing operation, comprising a supporting base, an upright post wich protrudes through the workpiece e.g. the central hole of a wheel and a securing member e.g. a tube or a plate, which may be non-rotatably posi
3930528 Pneumatic tire having lubricant containing pocket integrally formed therein January 6, 1976
A pneumatic tire comprises at least one pocket integrally formed within the tire structure. The pocket is positioned in the tire in the region of or adjacent a portion of the interior surface which contacts a second portion of the interior surface on deflation or under-inflation of the t
3930526 Pneumatic tire and wheel assemblies January 6, 1976
A pneumatic tire and wheel assembly comprises an enclosing means for a lubricating material which releases the lubricating material into the tire when the tire becomes deflated. A counterbalancing mass counterbalances the mass of the enclosing means and the lubricating material so that w
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