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Attorney: Scrivener, Clarke, Scrivener and Johnson


Number of patents: 233
Last date: March 17, 1987

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NumberTitleIssue Date
4650799Bis-dioxopiperazine derivatives, process for their preparation, antitumor agents comprising them and compositions containing them
Disclosed are novel bis-dioxopiperazine derivatives and non-toxic salts thereof, process for their preparation, antitumor agents comprising them and compositions containing them. The bis-dioxopiperazine derivatives are represented by the following general...
03/17/1987
4588013Binders for foundry cores and moulds
A binder for a foundry core or mould consists of an alkali metal salt of a polybasic organic acid or of a polymerized monobasic organic acid, for example sodium polyacrylate, an alkaline earth metal hydroxide such as calcium hydroxide, one or more polyval...
05/13/1986
4566596Knock-down dispenser pack for stacked articles
A knock-down rack for stacked articles, such as cigarette packages is disclosed. The rack is easily packed in knock-down condition for shipping purposes and easily assembled at its place of use by use primarily of only a screw driver. The rack includes ri...
01/28/1986
4564073Plow or harrow
An improvement of a plow or a harrow of the type in which a plurality of saucer-like disks carried by a rotary shaft inclined at an angle with respect to the direction of travel of a tractor are forced to rotate, thereby plowing uncultivated farm land. Th...
01/14/1986
4501736Extract from barrenwort
The present invention provides an extract obtained by extracting a plant belonging to the genus Epimedium sp. with a mixed solvent of water and a water-miscible organic solvent or with water, defatting the obtained aqueous extract and collecting a high-mo...
02/26/1985
4501451Vehicle braking system
A selector valve for a vehicle braking system in which brakes mounted on opposite sides of the vehicle can be operated selectively either together or independently, comprises an operating lever (9) for displacing a valve spool (2) to control communication...
02/26/1985
4500222Aqueous ink writing tip
A writing tip 1 for use with aqueous ink comprises an elongate housing 2. A writing ball 3 is retained in a socket 4 at one end 5 of the housing and a fibrous feed core 6 having aqueous ink feeding capillaries extends into a bore 7 in the housing from the...
02/19/1985
4498817Roof bolts for mines and the like workings
In the installation of a roof bolt in the roof of a mine, a hole is driven vertically upwards into the rock above the mine roof and the bolt is pushed up the hole. Moist grit is blown up the annular gap around the shank of the bolt and packs into the gap ...
02/12/1985
4495980Binders for foundry cores and moulds
A binder for a foundry mould or core comprises an alkali metal salt of a polyvalent organic acid or a polymerized monovalent organic acid, for example sodium polyacrylate, and an alkaline earth hydroxide such as calcium hydroxide, together with a suitable...
01/29/1985
4494277Crab holder for processing machine
A two-part crab holder is provided with specifically contoured surfaces for supporting a crab through various processing means....
01/22/1985
4491205Adjustable abutments in disc brakes
The present specification describes and claims a spot-type disc brake comprising a caliper and a torque taking member, a pair of abutment members being mounted on the torque taking member to form guides for an inboard friction pad assembly, one abutment m...
01/01/1985
4490979Vehicle braking system
In a vehicle braking system of the kind in which brakes mounted on opposite sides of the vehicle are associated with respective pedals (1) and can be operated together for normal vehicle retardation or independently to assist vehicle steering, the brakes ...
01/01/1985
4491298Butterfly valve
A fire-safe butterfly valve (FIG. 2) provides bi-directional sealing. In normal duties a polymeric seal provides forward and reverse sealing against the edge of the valve disc, the polymeric seal being resiliently loaded in the axial direction of the valv...
01/01/1985
4488405Master cylinder assembly for a vehicle hydraulic braking system
A master cylinder assembly comprising two separate master cylinders is disclosed. Pressure spaces of the master cylinders are interconnected through outlet passages and a transfer passage, and a transfer valve is housed within each outlet passage. When th...
12/18/1984
4485589Controllable detention window
A window assembly for controlling light and ventilation and preventing undesired passage through the window opening has spaced horizontal fixed slats, spaced horizontal movable slats which may be moved vertically to partially or wholly close the spaces be...
12/04/1984
4483546Self-levelling suspension
A sensor is associated with each suspension unit for adjusting the ride height of a vehicle, and each sensor gives an output that varies progressively with ride height. A control circuit, preferably microprocessor based, is arranged to (i) read each of th...
11/20/1984
4480394Dryer for safety razor
A box is provided with an opening in its top for receiving the blade-holding head of a safety razor with the end of the handle of the razor resting on the surface supporting the box. Means within the box directs heated air onto the head of the razor withi...
11/06/1984
4479988Spacer bar for double glazing
A spacer bar for double glazing is made as a hollow extrusion of polycarbonate, preferably incorporating about 20% of glass fibre reinforcement....
10/30/1984
4479284Crab processing machine
A machine for producing crab bodies ready for meat removal comprises means for transporting cooked hard crabs to a first station at which the carapace is centrally cut and the claws, walking legs and swimming legs are removed, then to a station at which t...
10/30/1984
4479937Process of treating inflammation with human urinary thiol protease inhibitor
An anti-inflammatory agent comprising as an active component an inhibitor specifically inhibiting a thiol protease, which is obtained from human urine by extraction and purification. This agent has an action of inhibiting a disease caused by a thiol prote...
10/30/1984
4474032Automatic plate freezers
An automatic plate freezer comprises a plurality of freezer plates which rest on a lower support connected by ties to an upper support. Each plate rests on the plate below via adjustable spacers and the upper support may be raised and lowered by jacks. In...
10/02/1984
4468927Hydraulic boosters for vehicle braking systems
An hydraulic booster has a housing provided with a bore, an inlet connected to a source of high pressure fluid, an outlet connected to a reservoir and a boost piston working in the bore. The boost piston is advanced in response to pressurization of a boos...
09/04/1984
4468061Horse van
The invention provides a van for transporting horses which has fixed side walls which are outwardly bowed longitudinally of the length of the van....
08/28/1984
4466378Coating applicator head
An applicator head, for applying a coating of material (e.g. hot-melt adhesive) to a passing ribbon comprises an extrusion slot disposed transverse to the direction of passage of the ribbon and arranged to apply a coating of material in at least one conti...
08/21/1984
4465164Pin sliding disc brake
The present specification provides a caliper for use in a disc brake. The caliper has at least two body sections which are clamped together by one or more bolts, each bolt having a bore extending axially therethrough, the bores acting as pin guides for th...
08/14/1984
4463969High pressure hydraulic systems
In a high pressure hydraulic system a source supplies pressurized fluid to a slave unit through a control valve operative to maintain the slave unit in a desired condition. Leakage from the slave unit past the control valve when the source is inoperative ...
08/07/1984
4463784Valve assembly for pressurized dispensers
In a valve assembly for a pressurized dispenser, such as of the kind commonly known as aerosol cans, a novel arrangement is proposed for sealing the spray tip or button to the ferrule or center boss of the mounting cup of the valve during `gassing`. An in...
08/07/1984
4463562Booster assisted hydraulic master cylinders for vehicle braking systems
In a master cylinder assembly the pressure spaces in advance of pedal-operated pistons of two separate master cylinders are interconnected by a transfer passage, and each master cylinder incorporates a boost chamber to which hydraulic fluid from a pressur...
08/07/1984
4459442Gas flow detectors
A flow detector, for use adjacent a steam trap to detect an unacceptable level of leakage of steam through the trap, comprises a tubular housing substitutable for a standard pipe nipple. The housing comprises a boss which provides a condensate collecting ...
07/10/1984
4458540Remote display module for displaying characteristics of flowing slurry
A remote display module displays characteristics, e.g. specific gravity and velocity, of a slurry of solids and liquid flowing in a pipeline. The remote display module generates a light spot representative of the coordinates of velocity and specific gravi...
07/10/1984
4457562Brake isolator valve
A brake circuit for a vehicle having selectively brakeable rear wheels comprises separate master cylinders each connected to one rear wheel brake and separately operable by means of foot pedals. The outputs of the master cylinders are connected to a contr...
07/03/1984
4457030Waste outlet fittings
A waste outlet fitting for a bath, basin, sink or the like comprises a tubular body in which a plug is captively mounted. The plug includes a part-spherical periphery which is complementary to a part-spherical seat formed in the tubular body. The plug may...
07/03/1984
4456104Hydraulic actuator for a vehicle internal shoe-drum brake
An hydraulic brake actuator comprises opposed pistons which work in bore portions in a housing and fluid pressure in a pressure chamber urges the pistons in opposite directions to separate adjacent ends of a pair of brake shoes. A pressure proportioning v...
06/26/1984
4455827Master cylinder and servo booster assemblies for vehicle braking systems
In a master cylinder and servo booster assembly for a vehicle braking system a mounting plate is connected to the rear end of a vacuum operated servo booster. A tubular extension integral with the mounting plate extends sealably through the movable wall o...
06/26/1984
4450633Convertible shoe
A convertible shoe having a sole and releasable upper strap portions. Anchoring means attached to the sole edge cooperate with ring means at the ends of the strap portions to releasable secure the upper and sole portions....
05/29/1984
4449757Hydraulic actuator for a vehicle internal shoe-drum brake
An hydraulic actuator comprises a first piston and a second piston both working in a bore in a housing and the actuator incorporates a pressure proportioning valve. The valve comprises a valve head for engagement with a seating, first and second stems pro...
05/22/1984
4446882Solenoid-operated valve means for hydraulic systems
In an hydraulic system a solenoid-operated valve mechanism is used to control delivery of pressure fluid to a part of the system, the fluid being circulated by a pump from a reservoir through the valve mechanism and back. The valve mechanism has a solenoi...
05/08/1984
4445695Rotary mechanical seals
A seal assembly primarily for use with the stern bearing of a ship comprises inner and outer face seal elements mounted on a rubber body for rotation with the propeller shaft. Any oil from the bearing which leaks past the inner element, or sea water which...
05/01/1984
4445595Disc brake pad assemblies
A friction pad assembly comprises a backing plate having friction material secured thereto, and an anti-rattle spring having a bent portion intermediate its ends, the bent portion seating in a recess in the backing plate. To avoid problems caused by heat ...
05/01/1984
4445697Collet
A collet for an automatic bar feed machine tool having an outer sleeve 20 and an inner sleeve 21 reciprocable in the outer sleeve, a spring 26 to bias the inner sleeve 21 away from the gripping region 28 of the outer sleeve. Bar stock 33 is gripped in the...
05/01/1984
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