Abstract: The invention relates to a brake system for a vehicle having at least one brake circuit which includes at least one wheel brake, one inlet valve, one outlet valve, and one return device. The return device has at least one first pump device and one second pump device, having respective inlet valves and outlet valves. The pump devices have a delivery cycle offset from each other. An additional valve is located in every supply line of every pump device for preventing negative pressure produced in an intake phase of one of the pump devices from being applied to an inlet valve of another pump device.

Abstract: An apparatus useful for disseminating volatile liquid such as fragrance into an atmosphere from an evaporating surface adapted to oscillate in the atmosphere. Oscillation is caused and maintained by means of two magnets, one a permanent magnet, the other an electromagnet, one of which is attached to the evaporating surface. The electromagnet is caused to repel the permanent magnet at such points in the oscillation that the oscillation is maintained.

Abstract: A method of disseminating to where it is required a substance that is advantageously disseminated after undergoing a heat-induced change of state or heat-induced fluidification, comprising the provision of the substance in a container that comprises a secondary induction coil, the container being adapted to be used in association with an apparatus provided with a primary induction coil, the coils being in a heat-providing relationship when the container is in association with the apparatus, and providing to the primary induction coil sufficient electricity to generate the necessary heat in the secondary induction coil. An apparatus to achieve this is also provided. Control of the temperature attained in the container may be regulated by choice of coil construction and positioning, thus permitting many different applications (air freshening, skin and hair care materials, cleaning and polishing materials) from a single base unit with a primary coil.

Abstract: An apparatus adapted to disseminate volatile liquid, such as a fragrance, into an atmosphere comprises a reservoir (1) containing volatile liquid and, extending into and therefrom, an essentially cylindrical liquid transfer member (4) that transfers liquid from the reservoir to an evaporating surface (6) through which the transfer member passes by means of a hole in the evaporating surface. The evaporating surface comprises a rigid sheet that extends essentially laterally from the transfer member and bears on its surface capillary channels adapted to accept liquid from the transfer member and spread it over the surface of the evaporating surface.

Abstract: An apparatus adapted to disseminate a volatile liquid, such as a fragrance, into an atmosphere in which its presence in vapour form is desired, the apparatus comprising a reservoir (1) of volatile liquid (2) and a porous wick that extends from the liquid in the reservoir to the atmosphere where it provides an evaporating surface, the wick being formed in at least two parts, at least one of which parts is in contact with the liquid and which comprises substantially no evaporating surface (3), and at least one other of which parts forms an evaporating surface (8,9), the parts being integral in the apparatus and that part comprising the evaporating surface being adapted to be movable either into liquid transfer contact or into non-liquid transfer separation with that part in contact with the liquid. The apparatus is simple, rugged, effective, cheap to make and easy to use. It is especially useful as an air freshener in motor vehicles.

Abstract: An apparatus for disseminating a volatile liquid, such as a fragrance, into an atmosphere from a reservoir, dissemination being achieved by means of a transfer member in contact with the liquid and a capillary member in liquid transfer contact with the transfer member. The capillary member comprises an evaporating surface bearing primary capillary channels, at least some of these primary capillary channels being intersected by at least one secondary capillary channel, the secondary capillary channel being substantially smaller in cross-sectional area than that of the primary channels, such that liquid will flow in both primary and secondary channels.

Abstract: An apparatus adapted to disseminate individually into an atmosphere a plurality of liquids, such as fragrances, the apparatus comprising (i) a source of forced ventilation; (ii) extending radially from the source, a plurality of passages, each having an entrance and an exit for the forced ventilation, the exit leading to the atmosphere; and (iii) at or near the exit of each passage an evaporative source of volatile liquid; the apparatus additionally comprising a movable barrier that surrounds the source, this barrier having one port that is movable into correspondence with a single passage at a time, such that forced ventilation flows down only that passage.

Abstract: An apparatus adapted to provide in an atmosphere one of at least three volatile liquids, the apparatus comprising a source of air current, radially extending from the source of air current a plurality of coplanar air channels, corresponding to the number of volatile liquids, placed such that the air current flows through them, each channel leading to a different volatile liquid-emitting member and then into the atmosphere; and located in each channel between the source and the volatile liquid-emitting member, means of blocking the channel and preventing the flow of air therethrough. The apparatus allows an easy change from one liquid to another and control over the time of the emission of each liquid.

Abstract: An apparatus adapted to disseminate volatile liquid, such as an insecticide or a fragrance, into an atmosphere, the apparatus comprising a reservoir containing volatile liquid and a liquid transfer member adapted to have contact with both liquid and atmosphere, the transfer member being slideable within a liquid-impermeable sleeve and having a liquid-impermeable lower end, the liquid-impermeable lower end and liquid-impermeable sleeve combining, when the transfer member is in a raised position, to deny access of the liquid to the transfer member, the transfer member being held in the raised position by suitable releasable locking means that, when released, allows the transfer member to be moved with respect to the sleeve to a lowered position in liquid transfer contact with the liquid. The apparatus is convenient to use and leakproof, and it permits liquid dissemination to be stopped and started at will.

Abstract: A disposable air treatment device that can be hung on the rim of a garbage bin which comprises a hanger component adapted to secure the air treatment device to a garbage bin, and a volatile material dispenser adapted to dispense a volatile material to the interior.

Abstract: A device which uses a heat source for heating and diffusing fragrant oils or insecticidal oils. The oil is contained in a reservoir remote from the heat source and the device comprises means for transferring the oil from a reservoir to a surface of a heat-absorbing means wherein heat from the heat source is transferred by conduction to said surface to volatilise the oil.

Abstract: A multipiston pump including a plurality of piston pumps hydraulically combined into at least two pump units are coupled on the intake side, but supply two separate hydraulic circuits of a vehicle brake system with pressure fluid. To reduce brake pedal pulsation the piston pumps are driven in phase-offset fashion. An eccentric unit comprising two spaced-apart cams rotated counter to one another, with the individual piston pumps being located in a number of sectional planes through the pump housing corresponding to the number of cams and locate the connecting conduits for hydraulically coupling the pump units are located in a region of the pump housing defined by the sectional planes.

Abstract: A device is described which includes a vertical body, the vertical body having contained therein a wick and a source of a vaporizable material. The vertical body further includes at an open end a silky material with irregular shapes to simulate the profiles of a flame such as a candle flame. Within the vertical body is a means for supplying an air current such that, when operating, the air current passes upward causing the silky material to flutter and simulate a flame, while also entraining vaporizable material which is present in the wick.

Abstract: A device which uses a heat source for heating and diffusing fragrant oils or insecticidal oils. The oil is contained in a reservoir remote from the heat source and the device comprises means for transferring the oil from a reservoir to a surface of a heat-absorbing means wherein heat from the heat source is transferred by conduction to said surface to volatilize the oil.

Abstract: A unit (1) for the transfer and distribution of a liquid (27) using capillary action has an elongated shaft (2) and a screen (3). The shaft (2) includes a first capillary medium (4) suitable for drawing the liquid (27) from a reservoir (26) into the shaft (2) when a bottom portion (20) of the shaft (2) is disposed in the liquid. The screen (3) is connected to the shaft (2) and includes a second capillary medium (5) suitable for receiving the liquid (27) drawn by the first capillary medium (4) and distributing it over at least a major part of the screen (3) where it evaporates.

Abstract: A device is described which includes a vertical body, the vertical body having contained therein a wick and a source of a vaporizable material. The vertical body further includes at an open end a silky material with irregular shapes to simulate the profiles of a flame such as a candle flame. Within the vertical body is a means for supplying an air current such that, when operating, the air current passes upward causing the silky material to flutter and simulate a flame, while also entraining vaporizable material which is present in the wick.

Abstract: An apparatus useful for disseminating volatile liquid such as fragrance into an atmosphere from an evaporating surface adapted to oscillate in the atmosphere. Oscillation is caused and maintained by means of two magnets, one a permanent magnet, the other an electromagnet, one of which is attached to the evaporating surface. The electromagnet is caused to repel the permanent magnet at such points in the oscillation that the oscillation is maintained.

Abstract: A gel air-freshener device comprising a container defining a cavity for receiving a fragrance-containing gel matrix (7), the container having an aperture (4) for permitting ingress of air into the cavity and egress of fragrance from the cavity, and having first (1) and second ends (3), which ends abut the gel-matrix (7) and move freely relative to each other as the gel matrix (7) shrinks upon evaporation of the fragrance. The device exploits the shrinkage of the gel-matrix (7) and translates this into movement of the device thereby providing a visual cue as to the condition of the gel matrix and in particular when it is exhausted.