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Assignee: Dunlop Limited


Location: London, GB2
No. of patents: 196

1          
NumberTitleIssue Date
6398162Aircraft braking systems
An aircraft braking system for a main undercarriage or undercarriages incorporates at least two brakes, which may be carbon type brakes, and a control unit for selectively disabling at least one brake during taxiing only, the control unit being arranged t...
06/04/2002
6029781Multi-disc brake
A multi-disc brake includes a plurality of stator discs, a plurality of rotor discs interleaved with the stator discs, a torque tube relative to which stator discs are axially slidably keyed, brake-actuating thrust members for applying an axial thrust to ...
02/29/2000
5845975Sequential selective operation of aircraft brakes
In an aircraft braking system comprising a plurality of carbon brakes a brake control system is provided whereby the number and/or proportion of brakes that may be disabled at each stage of a flight spectrum (i.e. taxi-out, take-off, in-flight, landing, t...
12/08/1998
5782320Toughened carbon composite brake discs
An aircraft disc stack (1) comprises a plurality of interleaved stator and rotor discs (3,4) keyed respectively to a torque tube (5) and a wheel hub (not shown). The stack (1) further comprises bi-functional friction/load-transmitting discs in the form of...
07/21/1998
5765779Ice protection device
An ice protection device for an airfoil comprises a plurality of discrete mat sections which are individually secured to the structural member by an adhesive....
06/16/1998
5762324Elastomeric mounting
An elastomeric mounting comprising a pair of rigid members (2, 3), an annular element (4) of elastomeric material sandwiched between confronting surfaces (6,7) of said members and a pillar (5) which extends centrally through the annular elastomeric elemen...
06/09/1998
5634535Composite brake disc
In a composite brake disc such as a carbon composite brake disc having reinforcement provided by layers of carbon fibre material, the drive region is provided with additional reinforcement to that of the friction region by laying or otherwise providing ad...
06/03/1997
5547737Light-weight, high-strength, stiff panels
A method for the manufacture of a light-weight panel, e.g. for aircraft, comprising preparing a panel preform having a pair of surface members or skins (29, 30) separated and supported by an internal core (26-28) in which spaces or interconnected pores pr...
08/20/1996
5544890Golf ball dimple patterns
A dimpled golf ball is provided with a regular repeating dimple pattern by projecting on to the surface of the ball the edges of a regular octahedron, thereby forming eight equilateral triangles on the surface. Each of the eight equilateral triangles can ...
08/13/1996
5540305Multi-disc brake
In a multi-disc brake comprising a torque tube and a piston housing having a plurality of hydraulically operated and circumferentially spaced piston cylinders a thermal isolation element is arranged to restrict heat generated by the friction discs from fl...
07/30/1996
5524884Striking implements
A striking implement comprises a handle portion and a striking portion, in which the striking implement is discontinuous in that it comprises two parts one part including the striking portion and the other part including the handle portion or a part there...
06/11/1996
5377989Golf balls with isodiametrical dimples
In a golf ball, non-circular isodiametrical dimples provide increased efficiency of coverage of the surface of a golf ball (in comparison with the conventional circular dimples). Additionally, the aerodynamic properties of the ball are improved. The dimpl...
01/03/1995
5360500Method of producing light-weight high-strength stiff panels
A method for the manufacture of a light-weight panel, e.g. for aircraft, comprising preparing a panel preform having a pair of surface members or skins separated and supported by an internal core in which spaces or interconnected pores provide vents to an...
11/01/1994
5277422Games racket frame
A novel games racket frame, particularly a squash racket frame is asymmetric in that the cross-section of the head portion measured perpendicular to the plane in which the strings will lie varies. Preferably the frame is strung in a "double fan" pattern i...
01/11/1994
4780363Carbon fibre materials
A sheet of parallel carbon or carbon-precursor filaments is supported by a carrier sheet of fugitive backing material and needle punched. The fugitive backing material is subsequently destroyed leaving displaced or broken portions of the filaments entangl...
10/25/1988
4722945Flame-retardant latex foams
A flame-retardant latex foam contains at least 35 (and preferably 40 to 55) parts by weight of an expandable graphite per hundred parts by weight of latex. Additional flame-retardant materials (e.g. hydrated aluminas, magnesium hydroxide, compounds of hal...
02/02/1988
4589347Elastomeric mountings
An elastomeric mounting comprises a plurality of elastomeric layers having a plurality of reinforcement layers interleaved between and bonded to the elastomeric layers wherein confronting surfaces of the reinforcement layers are of corrugated profile havi...
05/20/1986
4585371Lining of tubular structures
A tubular structure, such as a sewer, is lined by the use of long length elements having edge formations which facilitate a number of the elements being arranged in a side-by-side interlocked configuration within the tunnel structure. At least some of the...
04/29/1986
4580610Tire
A tire, which may be pneumatic or non-pneumatic, having beads which are each provided with an elastic annular member axially and radially inwardly of the associated bead core. The carcass ply is wrapped axially outwards of the bead core and part of the an...
04/08/1986
4576037Leak detectors
In a leak detector of a kind suitable for mounting externally of a flexible hose to detect leakage of fluid through at least a part of the hose and generate a warning signal in response thereto, test means is provided for checking the operating capability...
03/18/1986
4570979Flexible joint means
Flexible joint means for fluid conduits comprises an outer tubular member, an inner tubular member having an end portion positioned within the outer member and a bearing assembly acting between the outer and inner members. The bearing assembly comprises f...
02/18/1986
4552035Reinforced connecting link means
Link means for connecting two components comprises a pair of axially spaced bushes each adapted for connection to a respective one of said components and an endless band extending between the bushes. Band has side portions disposed on opposite sides of th...
11/12/1985
4543075Flexible couplings
A flexible coupling for transmitting torque between two relatively rotatable components comprises a plurality of connector members and resilient elements arranged alternately to form a ring in which alternate connector members are adapted for connection t...
09/24/1985
4543010Joint means
Joint means for flexibly coupling a first member having a body portion and at least two arms extending from the body portion generally parallel to and radially spaced from the longitudinal axis of the joint means to a second member positioned radially inw...
09/24/1985
4537825Bonded composites of a thermoplastic elastomeric blend with a vulcanized epom or epm rubber composition
A method of making a novel bonded composite of (i) a thermoplastic elastomeric blend of vulcanized EPDM particles not more than 50 microns in size disposed in a thermoplastic linear crystalline polyolefin continuous phase, with (ii) a vulcanized EPDM or EPM ru...
08/27/1985
4533274Flexible joint means
Flexible joint means in which a flexible bearing positioned between a hollow outer member and part of an inner member received within the outer member accommodates tension loads applied to either member and a substantially incompressible fluid contained w...
08/06/1985
4526616Load-bearing thermal insulator
A load-bearing thermal insulator, for example a brake piston thrust transmission element, which comprises platelets or flakes of thermally insulating material dispersed in a metal matrix and oriented normal to the direction of heat flow so as to impede th...
07/02/1985
4509558Flexible hose
A flexible hose comprising a main fluid retaining carcass and a secondary carcass enclosing at least part of the main carcass, said secondary carcass being constructed to expand radially relative to said main carcass on leakage of fluid from said main car...
04/09/1985
4509559Fire-barriers
A fire-barrier comprises a composite of three types of fire-retardant materials operable sequentially to combat an increase in temperature, e.g. as occurs on outbreak of a fire, by different methods. A preferred combination of materials is an outer layer ...
04/09/1985
4504345Tennis-balls
A tennis-ball is made by covering a spherical core with twelve substantially identical pentagonally-shaped pieces of a cover material. Before the pentagonally-shaped pieces are attached to the core, they are covered on their outermost surface by a removab...
03/12/1985
4504337Tire building machinery
Method and apparatus for building annular tire components such as steel cord tread reinforcements, in which a measuring drum is employed to receive strip material and simultaneously to feed it to a component building former. The strip material laps a port...
03/12/1985
4496331Flexible couplings
A flexible coupling for connecting two rotatable components, for example driving and driven shafts, to transmit torque from one of the components to the other and also to accommodate relative axial movement between the components comprises at least one to...
01/29/1985
4488613Fluid suspensions
The invention relates primarily to fluid suspension systems for truck cabs which are required to tilt on the chassis in order to gain access to the engine. In order to provide cab tilt pivots the displacer units comprise pins which engage in recesses when...
12/18/1984
4475774Vehicle braking systems
A vehicle anti-skid braking system, particularly for motor cycles, which employs a pilot brake for the purpose of generating operating power for the anti-skid system. The pilot brake is mounted for limited movement so that torque reaction moves it to actu...
10/09/1984
4472225Inflatable tube
The invention relates to inflatable tubes such as buoyancy tubes for inflatable liferafts and is aimed to provide tubes with bends in them that can be formed with a considerable reduction in the number of cutting and joining operations conventionally requ...
09/18/1984
4470477Hydropneumatic suspensions
The invention provides a hydropneumatic suspension system which is particularly suitable for lorry cabs of the kind which require to be tilted about a horizontal axis for access to the engine. Such a system normally has the disadvantage that a hydropneuma...
09/11/1984
4465105Flexible hose
A flexible hose comprising a main fluid retaining carcass and a secondary fluid retaining carcass enclosing at least part of said main carcass, said hose including means to collect and detect fluid leaking from said main carcass. Said means comprises a ci...
08/14/1984
4458789Brake assembly for a multi-disc brake including a force multiplying device
For the pneumatic actuation of a multi-disc brake, plungers which are distributed circumferentially around the thrust ring (not shown) of the disc pack are paired and each pair is driven in the brake-application direction by a common pneumatic actuator. T...
07/10/1984
4457736Flexible couplings
A flexible coupling for connecting drive and driven shafts comprising four radially extending bushes uniformly spaced in a circumferential direction with respect to the axis of rotation of the coupling. Opposed pairs of bushes are connected to a respectiv...
07/03/1984
4451313Pneumatic tires
A pneumatic tire which comprises: a tread portion; a breaker structure to brace the tread portion; two sidewalls each having an associated bead containing a bead core, and each sidewall containing a reinforcing ply of cords anchored around the bead core o...
05/29/1984
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