baber/WOPTO huggingface dataset:
Patent NO-163231-B (NO)
Inventor: HEFNER ROBERT E JR
IPC: C07D251/34
Filed: 1985-10-21
Abstract: This invention pertains to a process for preparing advanced epoxy resins which contain triazine groups or both triazine and oxazoline groups. When cured, these resins have higher heat distortion temperatures and'or higher elongation values than advanced epoxy resins which do not contain triazine groups or triazine and oxazoline groups.
Patent NO-171331-B (NO)
Inventor: MILLER LEE
IPC: F42B3/04
Filed: 1989-09-21
Abstract: A course correction unit for use on a spin stabilised guided projectile comprises a case (2), containing a propellant charge (3), and a valve member (4) which is held by a releasable securing means (6).
Patent NO-174295-B (NO)
Inventor: ALLEN RICHARD C
IPC: A61P29/00
Filed: 1990-08-24
Abstract: This invention relates to N-hydroxy-dibenz[b,e]oxepinalkylamines, N-hydroxy-dibenz[b,e]oxepinalkanoic acid amides and related heterocyclic analogues of the formula <CHEM> where X together with the carbon atoms to which it is attached forms a benzene or thiophene ring; W and Z are independently hydrogen, halogen, loweralkyl, or trifluoromethyl, R<1> is hydrogen, loweralkyl, or acyl; R<2> is hydrogen, loweralkyl, cycloalkyl, arylloweralkyl or acyl; m is 0 or 1 and n is an integer of 0 to 12 and the pharmaceutically acceptable salts thereof. The compounds of this invention exhibit dermatological and analgesic activity.
Patent NO-180553-B (NO)
Inventor: TAKASAKI KAZUHIRO
IPC: F16J15/16
Filed: 1991-02-20
Abstract: The invention relates to a seal (12-1), constituted by a water-expansible portion (13-1) and a water-unexpansible portion (14-1), for preventing water from leaking in a construction joint. The expansible portion (13-1) surrounds the unexpansible portion (14-1) everywhere except on a side of the unexpansible portion (14-1) which is adhered to one of two mutually facing surfaces of the construction joint. The unexpansible portion (14-1) is sized, relative to the overall size of the seal (12-1), particularly in the width dimension, so that it adheres with sufficient strength to one of the mutually facing surfaces of the construction joint so as not to become pulled off in use. An effective seal thus is maintained even in a swollen state. <IMAGE>
Patent SE-302240-B (SE)
Inventor: SINNEMA Y
IPC: A23G1/38
Filed: 1960-05-13
Abstract: Cocoa butter substitutes are obtained by mixing (a) 40-75% of a fat fraction obtained by fractionating Mowrah fat in one or more stages with a total of 2-20 1. acetone per kg. of fat to recover the fraction insoluble at 0-12 DEG  C.; (b) 0-30% of a fat fraction obtained from Shea butter, Dimori butter, Njave or Baku butter under the same conditions as in (a); (c) 0-15% of a fraction from the fats listed in (b) obtained by fractionation in one or more stages with a total of 2-20 1. acetone per kg. fat to recover the fraction soluble at 0-12 DEG  C.; and (d) 0-25% of a fraction from palm oil, Phulwara butter or Kepayan oil obtained by fractionation in one or more stages with a total of 2-20 1. acetone per kg. fat to recover the fraction insoluble at 0-12 DEG C. but soluble at 12-35 DEG C., at least one of the fractions (b), (c) and (d) being present.  It is preferred that fractions (a) and/or (b) are such as to be soluble at 12-35 DEG  C. (whereby unsaponifiables are removed) and that the fractionations be performed by extraction of the solid or semi-solid fat, preferably in two operations at 4 DEG  C. and 7 DEG  C. with 2-51. acetone per kg. fat, rather than by crystallization. Two or more of the fractionations (a)-(d) may be carried out simultaneously on a mixture of the appropriate fats. The product may be used in the preparation of chocolate (see Division A2).ALSO:A chocolate is prepared from a mixture comprising 28g. cocoa powder, 21g. cocoa butter, 56g. powdered sugar and 20g. of a cocoa butter substitute obtained by mixing (a) 40-75% of a fat fraction obtained by fractionating Mowrah fat in one or more stages with a total of 2-20 l. acetone per kg. of fat to recover the fraction insoluble at 0-12 DEG C. (b) 0-30% of a fat fraction obtained from Shea butter, Dimori butter, Njave or Baku butter under the same conditions as in (a), (c) 0-15% of a fraction from the fats listed in (b) obtained by fractionation in one or more stages with a total of 2-20 l. acetone per Kg. fat to recover the fraction soluble at 0-12 DEG C., and (d) 0-25% of a fraction from palm oil, Phulwara butter or Kepayan oil obtained by fractionation in one or more stages with a total of 2.20 l. acetone per Kg. fat to recover the fraction insoluble at 0-12 DEG C. but soluble at 12-35 DEG C., at least one of the fractions (b), (c) and (d) being present (see Division C5).
Patent RS-50387-B (RS)
Inventor: BRENDEL JOACHIM
IPC: C07C275/42
Filed: 2000-09-19
Abstract: 1. Jedinjenja Formule I, naznačena time, što u formuli znače: R(l) je C(O)OR(9), SO2R(10), COR(ll), C(O)NR(12)R(13) ili C(S)NR(12)R(13); R(9)je CxH2x-R(14) x je 0,1, 2,3 ili 4, pri čemu x ne može da bude 0, kada R(14) označava OR(15) ili SO2Me; R(14) je alkil sa 1, 2, 3, 4, 5 ili 6 C-atoma, cikloalkil sa 3, 4, 5, 6, 7, 8, 9, 10 ili 11 C-atoma, CF3, C2F5, C3F7, CH2F, CHF2, OR(15), SO2Me, fenil, naftil, bifenilil, furil, tienil ili heteroaromat koji sadrži N i ima 1, 2, 3, 4, 5, 6, 7, 8 ili 9 C-atoma ; pri čemu fenil, naftil, bifenilil, furil, tienil i heteroaromat, koji sadrži N, nisu supstituisani ili su supstituisani sa 1, 2 ili 3 supstituenta izabranih iz grupe koja se sastoji od F, CI, Br, J, CF3, OCF3, NO2 CN, COOMe, CONH2, COMe, NH2, OH, alkil sa 1, 2, 3 ili 4 C-atoma, alkoksi sa 1, 2, 3 ili 4 C-atoma, dimetilamino, sulfamoil, metilsulfonil i metilsulfonilamino; R(15) je alkil sa 1, 2, 3, 4 ili 5 C-atoma, cikloalkii sa 3, 4, 5, ili 6 C-atoma, CF3 ili fenil,koji nije supstituisan ili je supstituisan sa 1, 2 ili 3 supstituenta izabranih iz grupe koja se sastoji od F, CI, Br, J, CF3, NO2 CN, COOMe, CONH2, COMe, NH2, OH, alkil sa 1, 2, 3 ili 4 C-atoma, alkoksi sa 1, 2, 3 ili 4 C-atoma, dimetilamino, sulfamoil, metilsulfonil i metilsulfonilamino; R(10), R(ll)iR(12) su nezavisno jedan od drugog definisani isto kao što je R(9); R(13) je vodonik, alkil sa 1,2,3 ili 4 C-atoma ili CF3 ; R(2) je vodonik, alkil sa 1, 2, 3 ili 4 C-atoma ili CF3; R(3)jeCyH2y-R(16)Y je 0,1, 2,3 ili 4,pri čemu y ne može da bude 0, kada R(16) označava OR(17) ili SO2Me; R(16) je alkil sa 1, 2, 3, 4, 5 ili 6 C-atoma, cikloalkii sa 3, 4, 5, 6, 7, 8, 9, 10 ili 11 C-atoma, CF3, C2F5, C3F7, CH2F, CHF2, OR(17), SO2Me, fenil, naftil, furil, tienil ili heteroaromat koji sadrži N i ima 1,2,3,4, 5,6, 7, 8 ili 9 C-atoma, pri čemu fenil, naftil, furil, tienil i heteroaromat, koji sadrži N, nisu supstituisani ili su supstituisani sa 1, 2 ili 3 supstituenata izabranih iz grupe koja se sastoji od F, CI, Br, J, CF3, OCF3, NO2, CN, COOMe, CONH2, COMe, NH2, OH, alkil sa 1, 2, 3 ili 4 C-atoma, alkoksi sa 1, 2, 3 ili 4 C-atoma, dimetilamino, sulfamoil. metilsulfonil i metilsulfonilamino; R(17) je vodonik, alkil sa 1, 2, 3, 4 ili 5 C-atoma, cikloalkii sa 3, 4, 5, ili 6 C-atoma, CF3, fenil ili 2-,3- ili 4- piridil, pri čemu fenil ili 2-, 3-, ili 4- piridil nisu supstituisani ili su supstituisani sa 1, 2 ili 3 supstituenta izabranih iz grupe koja se sastojala od F, CI, Br, J, CF3, OCF3, N02, CN, COOMe, CONH2, COMe, NH2, OH, alkil sa 1, 2, 3 ili 4 C-atoma, alkoksi sa 1, 2, 3 ili 4 C-atoma, dimetilamino, sulfamoil, metilsulfonil i metilsulfonilamino; ili R(3) je CHR(18)R(19)R(18) je vodonik ili CzH2z-R(16), pri čemu je R(16) definisan isto kao što je gore navedeno; z je 0, 1, 2 ili 3; R(19) je COOH, CONH2, CONR(20)R(21), COOR(22), CH2OH; R(20) je vodonik, alkil sa 1, 2,
Patent ZA-831240-B (ZA)
Title: Method of pneumatic discharge of material from a storage container
Inventor: ARBELETCHE CARLOS
IPC: B65G53/66
Filed: 1983-02-24
Abstract: 1. Method of pneumatic discharge of fine-grained material from a storage container (1) into a pressurised feed pipe (2) in which the material in the storage container is under a regulable pneumatic pressure and passes out of the storage container through a regulable pneumatic nozzle (5) into the feed pipe and the pneumatic nozzle and the pneumatic container pressure are regulated as a function of the desired quantity of material discharged, characterised in that a) the quantity of material discharged is continuously determined by weighing of the container, b) in the event of deviation of the quantity of material discharged from the predetermined theoretical value the pneumatic nozzle is regulated so as to keep the quantity of material discharged constant, c) and when the limits of the range of regulation of the pneumatic nozzle are reached, the pneumatic pressure in the container is also regulated in such a way that the pneumatic nozzle remains within its range of regulation.
Patent ZA-837301-B (ZA)
Title: Pattern densified fabric comprising conjugate fibers
Inventor: SHIMALLA CHARLES J
IPC: D04H1/54
Filed: 1983-09-29
Abstract: A nonwoven fabric comprising at least 15 percent conjugate fibers having a low melting point component and method of making the same, said fabric comprising high loft regions immediately adjacent densified regions produced by compressing the web at a temperature below the softening point of the low melting point component of the conjugate fiber and at a temperature and pressure sufficient to deform and compact the conjugate fibers and compact the fibers of the web in only the densified regions.
Patent ZA-838987-B (ZA)
Title: Aminopyrimidinones as histamine h2-antagonists
Inventor: BROWN THOMAS HENRY
IPC: C07D403/14
Filed: 1983-12-02
Abstract: Pyrimidinone compounds of the formula:are described, wherein R<sup>1</sup> is selected from various optionally substituted phenyl and heterocyclic groups; X is methylene or in certain instances oxygen; Y is sulphur or methylene; Z is hydrogen or C<sub>1-6</sub>alkyl; A is an optionally interrupted alkylene chain and R<sup>2</sup> is an N-substituted pyridone.Processes for their preparation are described, as is their use as histamine H<sub>2</sub>-antagonists. Novel intermediates are described.
Patent ZA-847506-B (ZA)
Title: Label wrapping machines
Inventor: BUTCHER PETER EDWIN
IPC: B65C9/34
Filed: 1984-09-24
Abstract: The machine has a turntable (10) with a number of equally spaced devices with hinged jaws which place the label around the can. Each pair of jaws consists of a group of three rollers which guide an endless belt. With the jaws in the open position, a label is placed on the belt by a device (42) mounted at the side of the turntable. As the turntable rotates, the label is moved to the can (8) receiving station (24). The jaws then close around the can and the overlapping edges of the label are gummed to each other. The can is then transported to a despatch conveyor (32).
Patent ZA-858266-B (ZA)
Title: Polymer solutions and production of semi-permeable membranes
Inventor: HENDY BRIAN NORMAN
IPC: C08J5/22
Filed: 1985-10-28
Abstract: Solutions of sulphonated polyaryletherketones in a solvent mixture of at least three liquids or low melting solids which are non-solvents or poor solvents for the polymer, can be used to produce asymmetric semi-permeable membranes. The polymer may be a polymer ofand optionallyandwherein Ph and Ph<sup>2</sup> are respectively unsulphonated and sulphonated phenylene residues. The components of the solvent mixture have specified solubility parameters. A suitable solvent mixture is one formed from water, 1,4-dioxane and acetonitrile.
Patent ZA-864261-B (ZA)
Title: Electrolytic process for manufacturing potassium peroxydiphosphate
Inventor: MCCARTHY MICHAEL JOSEPH
IPC: C25B1/28
Filed: 1986-06-06
Abstract: @ The invention provides a process to maintain the anolyte pH in the desired range while manufacturing potassium peroxydiphosphate on a commercial scale. The process characterized by electrolyzing an alkaline anolyte containing potassium, phosphate, and hydroxyl ions at a platinum or noble metal anode optionally in the presence of a reaction promoter. The catholyte, an alkali metal hydroxide, is separated from the anolyte by a separating means permeable to anions permitting hydroxyl ions to be transferred into the anolyte thereby maintaining the pH of the anolyte in the desired range.
Patent ZA-878799-B (ZA)
Title: 2-aminoacetamide derivatives
IPC: C07C51/00
Filed: 1987-11-24
Abstract: Compounds are provided of the following general structure: <CHEM> wherein B is hydrogen, lower alkyl (C1-C4) or methoxycarbonyl; R1 is hydrogen or methyl and where W and Q are independently selected from phenyl or 4-fluorophenyl. They are useful for providing sedative and antiepileptic activity.
Patent ZA-883149-B (ZA)
Title: Herbicidal method using diflufenican
IPC: A01N43/40
Filed: 1988-05-03
Abstract: The herbicides napropamide (which is (R,S)-N,N-diethyl-2-(1-naphthyloxy)propionamide) and diflufenican (which is N-(2,4-difluorophenyl)-2-(3-trifluoromethylphenoxy)-nicotinamide) are advantageously used in combination to control the growth of weeds around trees, shrubs or soft fruit plants : compositions containing the herbicides and their use are described.
Patent ZA-886935-B (ZA)
Title: Sulfonamido derivatives inhibiting the aldose reductase enzyme system and pharmaceutical compositions containing them
Inventor: CACCIA GIULIO
IPC: A61P27/12
Filed: 1988-09-16
Abstract: The xantosulfonamido and benzensulfonamido derivatives corresponding to the formula: <CHEM> wherein X represents an alkyl-alkoxy halogen, Y represents an alkyl-alkoxy-halogen and Z represents the group <CHEM>  or Y and Z taken together form the group: <CHEM> wherein R1 in turn is a group selected among electron attracting groups, halogens and the group: <CHEM> possess activity in inhibiting the aldose-reductase enzyme system and are thus useful in the treatment of the complications , at the eye and peripheral neuropathy levels, as induced by diabetes.
Patent ZA-941278-B (ZA)
Title: A refrigerated product containing pieces of chocolate and a process and an arrangement for its production
Inventor: GRASSLER WALTER
IPC: A23G9/28
Filed: 1994-02-24
Abstract: This cooled (chilled) product is based on at least a mousse (2, 3), the said mousse containing between 2 and 10% by weight of chocolate (4), the said chocolate being sterilised and containing between 50 and 70% of fat, between 30 and 50% of cocoa powder and between 1 and 10% of sugar. The apparatus comprises at least one injection nozzle (9) for the mousse and an injection nozzle (32) for the chocolate. <IMAGE>
Patent ZA-944377-B (ZA)
Title: Hypoglycemic agents
Inventor: YEN GEORGE JOSEPH CULLINAN TER
IPC: A61K31/35
Filed: 1994-06-20
Abstract: The present invention provides a method for treating hyperglycemia in mammals by administering an antiestrogen compound, selected from 1) triarylethylenes; 2) 2,3-diaryl-2H-1-benzopyrans; 3) 1-aminoalkyl-2-phenylindoles; 4) 2-phenyl-3-aroylbenzothiophenes; 5) 1-substituted-2-aryl-dihydronaphthalenes; and 6) benzofurans and pharmaceutically acceptable salts and solvates thereof.
Patent ZA-945668-B (ZA)
Title: Stabilized pharmaceutical
Inventor: RUFF MICHAEL DAVID
IPC: A61K47/18
Filed: 1994-07-29
Abstract: PCT No. PCT/GB94/01642 Sec. 371 Date Mar. 22, 1996 Sec. 102(e) Date Mar. 22, 1996 PCT Filed Jul. 29, 1994 PCT Pub. No. WO95/03791 PCT Pub. Date Feb. 9, 1995This application discloses a method of inhibiting degradation of the antidepressant bupropion hydrochloride in a solid pharmaceutical formulation, so that the pharmaceutical formulation will maintain at least 80% of its initial bupropion potency after one year.
Patent ZA-959941-B (ZA)
Title: Microcapsules method of making and their use
Inventor: SCHNEIDER MICHEL
IPC: A61K31/047
Filed: 1995-11-22
Abstract: The invention relates to microcapsules to a microcapsule with a mean size from a fraction of micrometer to 1000 micrometers having a biodegradable membrane encapsulating a gas core. The membrane comprising one or more biodegradable water insoluble lipids or mixtures thereof and optionally mixtures of the lipids with up to 75% by weight of biodegradable polymers encapsulates the core which is filled with air or a gas. Microcapsules disclosed, may be non-coalescent, dry and instantly dispersible, when in suspension in a physiologically acceptable carrier are useful as delivery vehicles for therapeutically active agents and/or as contrast agents for echographic imaging of organs of human or animal body. The microcapsules of the invention are made by a method in which a water-in-oil emulsion is made from an organic solution comprising dissolved a mono-, di-, triglyceride preferably tripalmitin or tristearin and optionally therapeutically active substance and an aqueous solution containing a surfactant, optionally evaporating part of the solvent, adding a redispersing agent and freeze drying the mixture. The freeze dried mixture is then redispersed in an aqueous carrier to separate microcapsules from debris and the semi-spherical or spherical microcapsules are dried.
Patent ZA-975747-B (ZA)
Title: Polishing disc support and polishing process
Inventor: BROIDO GEORGES HENRI
IPC: B24D9/08
Filed: 1997-06-27
Abstract: A polishing disc support, designed to receive a layer of a fine abrasive paper or cloth used e.g. for finishing electronic components used in printed circuits, comprises a disc-shaped body (1) e.g. of aluminium with a centering hole (4) and an eccentric drive hole (5) in one face. The opposite face of the disc is coated with a layer (6) of material which is softer than that of the disc, to which the abrasive layer is applied. The softer layer (6) has a thickness of 5 mcm to 4 mm, a Shore D hardness of more than 12 and is made from PTFE, which can be applied by spraying or in the form of a layer attached by adhesive.
Patent AT-409391-B (AT)
Title: Permanent way without ballast and method for producing the same
Inventor: SALZMANN HEINRICH ING
IPC: E01B2/00
Filed: 2000-05-18
Granted: 2002-07-25
Abstract: Permanent way without ballast for rail-bound traffic with prefabricated supporting plates 1, which are constructed with concrete, if appropriate have a greater extent in the longitudinal direction of the rails than transversely thereto, bear at least two rails 2 in a releasably fastened manner, and rest on a levelled base, if appropriate a slab 11 or trough 13 formed in situ with concrete, via an elastomeric layer 9 on an intermediate layer 10 which is formed in situ under the latter and extends into at least one, in particular two, continuous polygonal, in particular rectangular, recesses 14 of the supporting plate 1 for fixing the position in the longitudinal and transverse directions of the rails, with a prefabricated holding part 15, in particular constructed with concrete, bearing against the supporting plate 1 in at least one recess 14, in particular via an elastomeric intermediate layer 18, which holding part has for its part a downwardly open, preferably continuous, recess 19, which is at least partially filled by the intermediate layer 10 formed in situ. <IMAGE>
Patent GB-2374013-B (GB)
Title: Sterilisation of pharmaceuticals
Inventor: MCAFFER IAN GARDNER CAMERON
IPC: C07J5/00
Filed: 2001-11-26
Granted: 2004-06-16
Abstract: A method of sterilizing a pharmaceutical composition containing a suspension of a pharmaceutical comprises rapidly heating the pharmaceutical composition from ambient temperature to an elevated temperature, maintaining it at or above the elevated temperature for a period of time, and rapidly cooling the pharmaceutical composition to ambient temperature.
Patent GB-2413011-B (GB)
Title: Keyboards
Inventor: PURCOCKS DALE MCPHEE
IPC: H01H11/00
Filed: 2003-12-24
Granted: 2006-01-18
Abstract: A switch comprising a generally tubular housing (10) of a rigid plastics material. A plurality of discrete tabs (12) are circumferentially disposed, in side-by-side relation, around an end of the housing (10). The housing (10) defines a recess (16) for receiving an elastomeric dome member (24) having an annular rib (26) at its base, and the recess (16) has an annular groove (20) with a relatively sharp edge (22) for receiving the annular rib (26) of the dome member (24). When the dome member (24) is correctly inserted within the recess (16), a downward force is provided on the tabs (12), causing them to 'fold' down over the base of the dome member (24), such that they are substantially at right-angles to the longitudinal sidewall of the housing (10), and substantially flush with the edge portion (29) thereof. Optionally, heat may also be applied to the tabs (12), causing them to at least partially soften and melt together, to form a single, substantially integral, flange completely covering the annular rib (26) at the base of the dome member (24), so as to create a fluid-tight seal between the housing (10) and the dome member (24). The end of the housing (10) apposite to that having the tabs (12) is provided with an aperture (30) with which the stem (32) of a keycap 34 is slidably engaged. The recess (16) for receiving the dome member (24) is shaped and configured so as to provide sufficient clearance such that the dome member (24) does not contact the inner wall of the housing (10) when it is deformed in use.
Patent GB-2430583-B (GB)
Title: Security and identification tags
Inventor: MARCHESE JONATHAN PETER
IPC: G06K19/04
Filed: 2005-09-27
Granted: 2007-10-03
Abstract: An identification tag, such as an EAS tag or an RFID tag, comprising a loop antenna having a substantially triangular shape and an electronic component connected to and positioned within the loop antenna, the antenna and component comprising a flexible metal structure disposed on one face of a flexible substrate, the flexible substrate extending away from one side of the triangular loop antenna to form a flap such that, when the tag is positioned on a face of a package close to its edge, the flap can be wrapped around the edge of the package and onto its other face.
Patent GB-2058240-B (GB)
Title: Lubricating shaft assemblies
IPC: F16C33/72
Filed: 1980-06-25
Granted: 1983-09-07
Abstract: An axle is disclosed having a housing defining a lubricant reservoir. A shaft extends through a bore in the housing and is supported by two bearings within the bore. The shaft has a radially extending surface which partially defines a lubricant chamber for pressurizing and pumping lubricant. The housing has a lubricant passageway in communication with the lubricant chamber. A seal is positioned within the lubricant chamber and has a lip which contacts the radial surface.
Patent GB-2124323-B (GB)
Title: Cleaning wire
Inventor: GOUGH PETER ROBERT
IPC: B21C43/04
Filed: 1983-07-26
Granted: 1985-12-04
Abstract: The invention provides for surface cleaning of wire rod and the like by holding the wire (10) under tension while passed through a die system (16) and vibrating the wire (10) transversely so that it is abraded by the surface. Cleaning liquid flushes the die bore.
Patent GB-2212942-B (GB)
Title: Method and apparatus for blowing an optical fibre member
Inventor: HANDLEY GRAHAM ROBERT
IPC: G02B6/44
Filed: 1988-11-24
Granted: 1991-10-02
Abstract: An apparatus is provided for introducing at least one optical fibre member (6) into a tubular passageway. The apparatus comprises a pressure vessel (1) for receiving the optical fibre member (6), the vessel (1) either containing compressed air or other gas or being provided with an inlet (2) by means of which compressed gas can be introduced. The vessel is connected to the passageway via a fibre-introducing device, e.g. a venturi (11) or a mechanical device, which creates slack in the optical fibre member.
Patent GB-2229149-B (GB)
Title: Vehicle suspension systems
Inventor: MUMFORD MICHAEL ANTHONY
IPC: B60G21/00
Filed: 1988-11-03
Granted: 1992-01-29
Abstract: A vehicle suspension system comprises a springing means, e.g. an anti-roll torsion bar (15) common to at least two vehicle wheels, means (20) for adjusting the springing means to change its loading, means for sensing vehicle acceleration, means for measuring the adjusted position of the springing means, and control means (26, 27) which respond to the vehicle acceleration to determine the required adjustment of the springing means and to cause it to be adjusted until the required setting of the springing means is reached.