=:=:=:=:=:= - L'invention concerne un dispositif pour la réalisation de galeries dans la masse d'un matériau isolant d'une cloison composite constituée d'une couche ou épaisseur dudit matériau recouverte d'un et/ou de l'autre côté d'une plaque rigide de façade, caractérisé en ce qu'il comprend, d'une part, un ensemble mobile constitué d'un organe de perçage (14,41) monté à l'extrémité d'un flexibl...

A riding mower (2) includes a cutting unit (6) suspended from a traction unit (4). Cutting unit (6) is suspended from a forwardly extending frame (8) by four suspension units (40-43). Each suspension unit includes an upwardly opening saddle member (44) in which a pin (51) carried on cutting unit (6) is received. At least some of the pins (51) are longitudinally constrained in the saddle members (4...

The present invention relates to a multi-purpose cart and grass collector for use with a riding mower or lawn and garden tractor. The multi-purpose cart and grass collector includes two front ends having horizontally aligned apertures therein to provide a two point rigid hitch attachment to the mower or tractor. The cart is supported above the surface of the ground by at least one pivotal wheel an...

The riding mower chassis of this invention has laterally spaced front traction wheels, attachment fittings for a mower that rides in front of those wheels, and laterally spaced rear wheels that can float up and down to accommodate terrain irregularities, For such floating a rear axle has at its midpoint a pivot connection with the frame whereby its ends can swing up and down, and the rear wheels a...

There is disclosed a family of low dielectric, copper-exuding, boroaluminosilicate glasses particularly adapted to use in forming substrates for electronic devices such as integrated circuits. The glasses are capable of exuding copper oxide, have a coefficient of thermal expansion of 30-35x10-7 at 300 DEG C., a dielectric constant not over 5.0 at 100 KHz, a loss tangent not over 0.003 at 100 KHz ...

An ultrasound therapy apparatus having an applicator. The applicator comprises at least one ultrasonic beam emitter, at least two ultrasonic transducers, and a support member. The beam emitter emits an ultrasonic beam onto an object within a patient, for the purpose of treating the object. The transducers apply ultrasonic beams to the patient and detect ultrasonic echoes coming from the patient, t...

An attachment for a scintillation camera to enable the camera to be used for measurement of bone mineral mass includes a grid holder adapted to be attached to the camera, a grid mounted on the grid holder and adapted to lie directly in front of the camera when the grid holder is attached to the camera, and an arm attached at one end to the grid holder and, at the other end, including a source hold...

X-ray energy in an x-ray beam is determined from a comparison of apparent absorption of energy by three different materials. Initially, the attenuation coefficients (10,12,14) of each of the materials as a function of x-ray energy is determined. The ratios of attenuation coefficient differences between two of the materials and between one of the two materials and the third material are plotted ove...

An agent for contrast enhancement in nuclear magnetic resonance imaging is disclosed. Vesicles such as phospholipid vesicles are associated with or enclose a paramagnetic material. The vesicles may be formulated with an agent, such as cholesterol, to promote vesicle stability and water exchange across the vesicle bilayer. The vesicles may or may not have antibodies or other cell recognition target...

The present invention is a device for overturning cigarette packs or the like, which are advanced in a horizontal row toward an abutment stop member and must be each capsized around an axis which is transverse to the direction of progress of the row of packs. The device according to the invention is characterized by a pack-guiding arcuate channel extending in a substantially vertical plane at abou...

An oven (20) includes an oven enclosure (24) having a conveyor (40) mounted therein for transporting food products through the oven. A plurality of ribbon burners (100) are mounted within the oven interior (32) adjacent the path of the conveyor to heat the interior of the oven. Heated gases generated by operation of the ribbon burners are received through inlet plenums (140) under operation of a c...

An air-driven contact filter for biological cleaning of waste water has spiral wound channels with an axis placed below the surface of the water. Air is blown into the center and water is displaced so that the channels will rotate.

The valve holding plate has a central body for the valve and an annular groove formed by bending over its outer edge. The groove accommodates a seal, and the edge of the can mouth, to which the plate is crimped. The groove (24) has a spacer (12) bearing against the seal (23) and shaped to suit the thicknesses (Tm,Tg), of the plate (21) and seal. The distance (x) of the outside surface (7), forming...

PURPOSE:To obtain, in low costs, the title fiber of excellent extinction ratio by integrating a silica glass rod having the space, a jacket glass rod having the second space and a core rod into a solid rod and melt-drawing it. CONSTITUTION:(A) A silica glass rod 1 which has the first space 2 of elliptic section extending longitudinally along the center axis, (B) a jacket glass rod 3 of the same el...

PURPOSE:To produce the title optical fiber having excellent extinction ratio in continuous length in low costs by filling the space of a specific silica glass rod with the core rod and a plurality of glass rod fibers, melting them into a solid body and melt-drawing into fiber. CONSTITUTION:(A) The core rod 5 is inserted into (B) the space 2 of elliptic section extending longitudinally along the ce...

A method is provided for obtaining images for use in displaying a three-dimensional illusion which includes the step of obtaining first and second images of a subject volume having foreground and background portions with the points of origin of those images located in a first plane which includes left and right points of origin of an observer of the subject volume and which is normal to the optica...

An arrangement for the raising and transferring flattened tubular packing container blanks (2) from a magazine (3) to a conveyor arrangement comprises suction elements (18a and 18b) arranged on arms (15) movable in a curved path away from each other. The placing of the elements is such that the suction elements in a certain position (receiving position) of the arms are directed towards each other ...

An intraocular lens including an annular Fresnel lens for implant in the anterior chamber, the posterior chamber or in the cornea of the eye. The Fresnel lens can be made of polymethylmethacrylate (PMMA) or a high index of refraction material. The lens is an annular lens with centers of curvature of different rings receding from the axis according to the distance from the center so as to minimize ...

An alcohol and/or carboxylic acid ester is (are) produced from a C2 to C12 carboxylic acid by contacting the carboxylic acid at elevated temperature and pressure with hydrogen in the presence of a heterogeneous catalyst characterised in that the catalyst comprises a first component which is either molybdenum or tungsten and a second component which is a noble metal of Group VIII of the Periodic Ta...

An alcohol and/or carboxylic acid ester is (are) produced from a C2 to C12 carboxylic acid by contacting the carboxylic acid at elevated temperature and pressure with hydrogen in the presence of a heterogeneous catalyst characterised in that the catalyst comprises a first component which is either molybdenum or tungsten and a second component which is a noble metal of Group VIII of the Periodic Ta...