Patents Assigned to Cranfield Institute
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Patent number: 4976349Abstract: An aerofoil or hydrofoil (1) has a vessel (2) for providing a high velocity jet of fluid directed from a nozzle (3) in a direction having a component of velocity in the same direction as the required direction of lift (L). The aerofoil or hydrofoil (1) also has a curved surface (5) convex on the side of the aerofoil or hydrofoil which is in the direction of the required lift, and which serves to direct the velocity of the jet in a direction which is substantially opposite to the direction of the required lift or thrust force, the primary jet being directed over the convex surface for attachment thereto; and a duct formed over a rear part of the convex surface remote from the nozzle, whereby the primary jet of fluid flowing over and attached to the convex surface causes an enhanced flow through the duct, the duct being directed at least at its exit end in a direction so that the flow therethrough has a component of velocity opposite that of the required direction of lift.Type: GrantFiled: June 2, 1988Date of Patent: December 11, 1990Assignee: Cranfield InstituteInventor: Richard C. Adkins
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Patent number: 4882013Abstract: Bioelectrochemical processes use tetrathiafulvalenes (TTF) as a mediator of electron transfer between biological systems and electrodes. Typically it finds use in bioelectrochemical assays, e.g. involving glucose oxidase mediated oxidation of glucose. The TTF may be immobilized on the electrode surface, as may one or more enzymes involved in the process.Type: GrantFiled: February 24, 1987Date of Patent: November 21, 1989Assignee: Cranfield Institute of TechnologyInventors: Anthony P. F. Turner, Stuart P. Hendry, Marco F. Cardosi
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Patent number: 4580258Abstract: Apparatus for correcting or compensating for the tracking error of the pivotally mounted (1) tone arm (23) of a phonograph includes a first intermediate member (9) to which said tone arm (23) is pivotally (1) connected, a second intermediate member (12) which is rotatably connected to the first intermediate member (9) by a belt (18) and pulleys (13) which are sized in such a way that a photodiode source (21) and a photodiode detector (22) both carried by the second intermediate member (12) will tend to be indirectly moved by a motor to maintain them substantially constantly in register with a point on the tone arm (23). A slotted mask (24) carried by the tone arm (23) is interposed between the source (21) and the detector (22) and its slot defines a central "null" position in which said motor will not be driven when the required relationship exists. Deviation in either direction will cause the motor to be driven to re-establish this relationship. An insignificant maximum tracking error below 0.1.degree.Type: GrantFiled: May 11, 1984Date of Patent: April 1, 1986Assignees: Cranfield Institute of Technology, Elite Townshend, Ltd.Inventors: Jack Dinsdale, Robert S. Berks
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Patent number: 4277070Abstract: A phonograph has a viscous damping arrangement coupling a pick-up arm to the base of the phonograph to damp vertical and horizontal vibrations of the arm. The damping means is coupled to the arm at a position close to the pick-up cartridge of the arm. A counter-balance mass is also provided on the arm, the mass having an adjustable position and mass.Type: GrantFiled: December 28, 1979Date of Patent: July 7, 1981Assignee: Cranfield Institute of TechnologyInventors: Jack Dinsdale, David W. Parkins, John P. Hardwick
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Patent number: 4061952Abstract: A control system for a grinding machine or other machine tool, wherein desired workpiece profiles are stored in a digital computer which controls the position of a tool in relation to a workpiece in accordance with the stored profile and in accordance with the position of a workpiece profile follower to compensate for tool wear.Type: GrantFiled: April 14, 1975Date of Patent: December 6, 1977Assignee: Cranfield Institute of TechnologyInventors: Jack Dinsdale, David Wallace McQue, Geoffrey Vorley
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Patent number: 3984746Abstract: A machine for forming gears and the like comprises a workpiece support continuously rotatable about a first axis, a tool support angularly displaceable about a second axis and constructed to support a tool for rotation about a third axis angled to the first axis and an electrical master-slave servo system having a master providing a first electrical signal defining a required angular displacement for the tool support and a second electrical signal for influencing the continuous rotation of the workpiece support in dependence upon the angular displacement defined by the first signal.Type: GrantFiled: June 10, 1974Date of Patent: October 5, 1976Assignee: Cranfield Institute of TechnologyInventors: Jack Dinsdale, John Loxham