Abstract: A vehicle jack comprising a first portion comprising a lower portion adapted to support the jack relative to a ground surface in a first orientation, a rest member extending from the lower portion and adapted to at least partially support the jack relative to the ground surface in a second orientation, and a support member extending from the lower portion, and a second portion movable relative to the support member, the second portion comprising a surface adapted to abut with a vehicle.

Abstract: A vehicle jack comprising a first portion comprising a lower portion adapted to support the jack relative to a ground surface in a first orientation, a rest member extending from the lower portion and adapted to at least partially support the jack relative to the ground surface in a second orientation, and a support member extending from the lower portion, and a second portion movable relative to the support member, the second portion comprising a surface adapted to abut with a vehicle.

Abstract: A multiple process service vessel including a first module configured to mix drilling fluids and a second module configured to remediate drilling waste, wherein the first and second modules are located at least partially below the deck of the vessel. A method of processing drilling components, the method including transferring a first drilling fluid component from a pressurized vessel on a multiple process service vessel to a mixing unit at a first location; mixing the first drilling fluid component with a second drilling fluid component in the mixing unit to produce a drilling fluid; transferring the drilling fluid to a second pressurized vessel; moving the multiple process service vessel to a second location; and transferring the drilling fluid from the second pressurized vessel to a drilling location.

Abstract: The present invention provides an antenna assembly (10) comprising a plurality of planar tiles (20). Each of the tiles carries a planar array of sets (22) of antenna elements (47-50) arranged to be operated as a phased array antenna. The tiles are arranged in an orientation which is conformal to a contour of an underlying structure. In use, only those tiles which are capable of communication in the steered direction are enabled, while those which are not capable of communicating in the steered direction are not used.

Abstract: A method is presented for operating a phased array antenna comprising a number of sub-arrays. The method comprises the steps of introducing phase offsets into signals received from/transmitted to each element in the antenna, to provide directional transmit or receive sensitivity in a first direction; summing signals received from each element in each sub-array to provide respective sub-array signals; introducing respective phase offsets into the respective sub-array signals to adjust the direction of maximum sensitivity within a sensitivity envelope defined by the phase offsets applied to each element of the antenna as a whole.

Abstract: The present invention provides an antenna assembly (10) comprising a plurality of planar tiles (20). Each of the tiles carries a planar array of sets (22) of antenna elements (47-50) arranged to be operated as a phased array antenna. The tiles are arranged in an orientation which is conformal to a contour of an underlying structure. In use, only those tiles which are capable of communication in the steered direction are enabled, while those which are not capable of communicating in the steered direction are not used.

Abstract: A method is presented for operating a phased array antenna comprising a number of sub-arrays. The method comprises the steps of introducing phase offsets into signals received from/transmitted to each element in the antenna, to provide directional transmit or receive sensitivity in a first direction; summing signals received from each element in each sub-array to provide respective sub-array signals; introducing respective phase offsets into the respective sub-array signals to adjust the direction of maximum sensitivity within a sensitivity envelope defined by the phase offsets applied to each element of the antenna as a whole.

Abstract: An antenna system is comprised of a plurality of independently constructed and operated antenna units, upon which are mounted a plurality of transmit and receive antenna pairs. This structure provides a means for the antenna system to be arranged to provide substantially hemispherical radio coverage. By adjusting the phase of each version of a radio signal to the transmitter or received, the signal may be formed into a beam according to known techniques of directional beam forming providing the antenna system with directional gain. Additionally, using a plurality of transmit and receive antenna pairs reduces the energy transmitted by each transmit antenna alone to a level which permits a branch line coupler to be sufficient to orthogonally polarize the transmitted and received radio signals negating the requirement for the duplexing filter for duplex operation.

Abstract: Polymers comprising repeating units which contain groupings of the formula --CH.sub.2 OOCR.sub.1, wherein R.sub.1 is hydrogen or alkyl with 1 to 14 carbon atoms and the --CH.sub.2 --group is directly bonded to a quaternary nitrogen atom. The polymers are useful in photographic materials as mordants for anionic compounds especially for anionic dyes.

Abstract: Film base material is provided which comprises a film of biaxially oriented synthetic linear polyester of highly hydrophobic character having superimposed thereon adherent to said film a subbing layer which contains a copolymer of vinylidene chloride, an alkyl acrylate or methacrylate, an allyl or methallyl component containing an active methylene group the monomer of which has the general formula ##STR1## wherein T is --CN or --COCH.sub.3, X is O, NH or S, and R is a hydrogen atom or methyl group and optionally at least one copolymerizable acid.The subbing layer improves the adhesion between the film support and the photographic emulsion layers and prevents the separation of the layers or frilling when the final photographic film is processed.

Abstract: The present invention relates to polyester film material. Adherent to the polyester base the film material comprises a copolymer ofA. vinylidene chloride,B. alkyl acrylate, alkyl methacrylate, vinyl acetate and/or acrylonitrileC. a copolymerizable acid andD. a halogenoacetic acid allyl- or vinyl ester or a halogenomethyl vinyl ketone.The copolymer forms a subbing layer suitable for anchoring silver halide emulsion layers on the poly-ester film base.

Abstract: This invention relates to a silver halide photographic material at least one gelatin layer of which contains a copolymer derived fromI vinyl acetate and another monomerIi an allyl or methallyl acyl acetate and optionallyIii a sulphonate with an allyl or methallyl group.The material can be hardened to a greater degree than the usual materials.