Abstract: Methods and apparatus are disclosed for determination of the total concentration of organic carbon compounds in aqueous process streams utilizing a pulsed-flow technique for irradiating a water sample in a chamber (3) with UV or similar wavelength radiation.

Abstract: A stabiliser for a ladder which enables the ladder to be safely used on sloping or uneven ground consists of spring loaded telescopic struts attached to the bottom of the ladder which are capable of compound rotary motion so that they can be opened to the required length and locked in position.

Abstract: The invention relates to a new and improved heavy oil hydrocracking process using a multimetallic liquid catalyst in a slurry-bed reactor, particularly an improvement of lightweight treatment of heavy oil in the petroleum processing technology. According to the present invention, a slurry-bed hydrocracking reactor and a highly dispersed multimetallic liquid catalyst are mainly applied during the process. A fixed-bed hydrotreating reactor is also used on line to enhance lightweight oil yield from heavy oil under normal pressure.

Abstract: Heat transfer catheter apparatus and methods of making and using same are disclosed wherein a fluid connection is provided between the distal portions of two adjacent, thin-walled, high strength fluid lumens to define a closed loop fluid circulation system capable of controlled delivery of thermal energy to or withdrawal of thermal energy from remote internal body locations.

Abstract: An integrated ocean bottom towed four-component array for seismic data acquisition consists of a four-channel electronic section for seismic data collection, a gimbaled three-component geophone and a hydrophone in a housing. The array connects with a submarine cable through a cable joint in order to acquire four components of data consisting of seismic P wave, shear wave and hydrophone in total. Through cable data transmission and processing in a central station, ocean bottom oil and gas structure information can be obtained. Because of the high SNR acquisition in the ocean bottom seismic data acquisition of the present invention, and the waterproof cable interconnections between each of the sections of the present apparatus, data acquisition of high quality can be gained to realize highly efficient and easy ocean bottom towing operations.

Abstract: A ladder levelling device which is simply operated by person's foot, embodying stile extender (7) either inserted into hollow stile (1) or removably attached to side of solid stiles of ladders or stepladders. Consisting of outer fixed housing, internal telescopic extender (7) and ratched mechanism, with teeth (20) in the extender (7) engaging with teeth (23) attached to an arm (21) which can rock about a pivot (4) in the housing to disengage the opposing teeth (20). A roller (15) or low friction device attached to the arm (21) between the teeth (23) and the pivot (4) disengages the teeth (23) during extending to reduce wear. A cam (12) attached either directly or indirectly to the opposing end of the arm (21) enables retraction and acts as safety device that prevents movement in either direction. A foot (30) is attached to base of expander by a spindle (31b) which allows limited universal movement and is capable of being locked in position.

Abstract: Heat transfer catheter apparatus and methods of making and using same are disclosed wherein a fluid connection is provided between the distal portions of two adjacent, thin-walled, high strength fluid lumens to define a closed loop fluid circulation system capable of controlled delivery of thermal energy to or withdrawal of thermal energy from remote internal body locations.

Abstract: A continuous process for integrated processing of a C8+ aromatic hydrocarbon stream is disclosed for recovery of a high purity meta-xylene product in conjunction with efficient separation and recovery of purified para-xylene and, optionally, purified ortho-xylene products.

Abstract: Apparatus and methods for supplying a portion of a fluid stream and, alternately, a fluid of known composition and concentration to an analyzer are provided. The fluid stream is directed through a series of connected chambers formed in an integral housing. A sampling needle has an inlet in one of the chambers and an outlet in fluid communication with the analyzer. When desired, a tube or vial containing a known fluid may be inserted into a chamber containing the sampling needle, so that the known fluid will be supplied to the analyzer. A second needle provides ventilation to the vial to prevent the formation of a vacuum as the known fluid is drained from the vial.

Abstract: Apparatus and methods for determining the content of total organic carbon, total inorganic carbon, total carbon and total heteroorganic carbon in water are disclosed. In a preferred comprehensive embodiment, the water sample is split into a first stream and a second stream. Inorganic carbon in the first stream, if any, is determined by acidifying the sample, measuring the electrical conductivity using a temperature and conductivity sensor, and removing the ionic species. Organic carbon in the first stream is then substantially completely oxidized in a U.V. oxidation reactor to carbon dioxide and possibly other oxidation products, and the electrical conductivity of the effluent- stream is measured using another temperature and conductivity sensor. At least a portion of the carbon dioxide in the first stream is transferred through a carbon dioxide permeable membrane into the second strewn. The second stream then passes into another temperature and conductivity sensor and conductivity is measured.

Abstract: An improved apparatus and method is disclosed utilizing hydrogen absorption in combination with photolysis and/or electrolysis for in situ generation, i.e., without the need for adding chemical oxidizing agents, or enhancement of oxidizing conditions used to promote oxidation of organic compounds to form carbon dioxide, and the use of the same in connection with high-accuracy determination of even extremely low levels of organic and/or inorganic carbon compounds both in flowing aqueous streams and in bulk solutions.

Abstract: Apparatus and process are disclosed for the distillation separation of styrene monomer from ethylbenzene utilizing a split feed to two distillation columns in conjunction with cascade reboiling utilizing thermal energy from the overhead of one column to supply heat to the second.

Abstract: This invention relates to an improved hockey stick for use in playing ice and street hockey comprising a dual-blade stick with blade reinforcing means spaced inwardly from the point of bifurcation of the two blade toes.

Abstract: This invention relates to a children's doll in the form of a guardian angel which is designed to rest on a child's shoulder or elsewhere. The doll has a human-like torso with a pleasing, child-like face and a pair of wings which attaches to the doll's back. The shoulder support system includes two straps: the first having interlocking loop type fasteners at either end thereof on the same strap side; the second having interlocking loop type fasteners at either end thereof but on opposite strap sides. The interlocking loop fasteners of the two straps engage corresponding interlocking loop fasteners on the front and back of the doll's torso at one end of said straps and each other at the opposite end of said straps to hold the doll securely and adjustably in place on a child's shoulder.

Abstract: This invention relates to the design and application of a goniectomy instrument for the purpose of diagnostically and therapeutically removing tissue from the anterior chamber angle of the eye and for retrieving this tissue for further examination. The surgical instrument of this invention comprises in combination: a hollow, tapered shaft having a cutting edge at one end as an integral part thereof; a retractable stylet contained within the hollow interior of the tapered shaft; and an irrigation port running along the outside of the tapered shaft. This instrument is useful for excising tissue to relieve an obstruction blocking the outflow of aqueous humor from the eye as well as for providing specimens of the excised tissue for histopathological examination.

Abstract: This invention relates to variable focus eyeglasses comprising flexible and rigid optical components. The rigid components act as molds which modify the optical properties of the flexible components when the flexible and rigid components are engaged.At least one of the flexible or rigid components is movable along an anterior-posterior axis, resulting in the distortion and restitution of a flexible component by one or more rigid components thereby altering the optical properties of the system.A spring mechanism located in the nosepiece or bridge portion of the eyeglasses may be used to facilitate the anterior-posterior movement of the movable components.

Abstract: The invention is an emergency illumination apparatus for use in areas where the presence of gases, vapors, dust, or combustible matter makes the use of conventional apparatus hazardous. The apparatus has a front compartment and a rear, explosion proof compartment that is separated, from the front apartment, by a divider wall. This divider wall has sealed light sockets on the front compartment side. Furthermore, the rear compartment has sealed electrical connections to at least two independent power sources.

Abstract: The invention relates to an artist's easel characterized by circular mobility around a fixed base.