A refrigerant comprising a ternary or higher mixture of: (a) tetrafluoroethane and/or heptafluoropropane; (b) difluoromethane and/or 1,1,1-trifluoroethane; and optionally (c) pentafluoroethane. g

A single-room or similar air conditioning unit functioning as heater, air cleaner, humidifier, cooler, ventilation and heat-recycling unit comprises a shell 1, fans 20, 21, a pump 29, a central control unit 5, an accumulator 10 and other additional parts. The accumulator 10 is composed of thin aluminium plates 33 and filter disks 34 and functions as heat exchanger/filter/cooler unit. The single-ro...

A novel process for placing a thin film of a metal nitride, e.g. titanium nitride, on a glass substrate (10) by mixing a metal halide with a reducing gas like ammonia, preferably within a range of from about 250C to 320C, and then reacting the gases at (18) the surface of a glass substrate heated to, e.g., about 400C to about 700C to form the film on the glass.

The coaxial carbon dioxide laser comprises a pair of electrodes (1,2) a laser pipe (3) containing a carbon dioxide laser gas flowing in the axial direction, a high-frequency power source (4), a totally reflective mirror (5) and an output coupling mirror (6). The electrodes are formed by depositing two helical conductors of the same pitch onto the outer surface of the laser pipe. By applying a high...

A phosphorus free or a low phosphorus containing lubricant composition is provided by formulating the composition with an additive of the formula (I) wherein R1 and R2 are independently alkyl of 1 to about 7 carbons, aryl, aralkyl or together form an alicyclic or heteroalicyclic radical in which the ring is completed through the nitrogen; X is O or S; a is 1 or 2; R3 and R4 are independ...

Apparatus for hypodermically implanting a genitourinary prosthesis comprising an extensible, inflatable tissue expanding containment membrane to be located in the proximal periurethral tissues to add bulk to these tissues and thereby overcome urinary incontinence by means of localized, controlled tissue volume increase. Hypodermic positioning, injecting and inflating instruments are also disclosed...

An improved optical rotary joint is achieved by transmitting information in the form of an optical signal from a part of the de-spun portion outside the rotational axis to create on the spun portion, or vice versa, 360 DEG about the rotational axis, a continuous communication path having a configuration described by a series of overlapping elliptical areas. The detection area on the spun portion ...

A cache memory unit is disclosed in which, in response to the application of a write command, the write operation is performed in two system clock cycles. During the first clock cycle, the data signal group is stored in a temporary storage unit while a determination is made if the address signal group associated with the data signal group is present in the cache memory unit. When the address signa...

A head-up display for use in a vehicle is provided with a curved combiner which reflects an image from a cathode ray tube (CRT) as collimated rays to a viewing site. A relay lens is positioned between the CRT and the combiner to magnify and transfer the image. The combiner may be a partially-reflecting mirror or holographic optical element or dielectric laminate. Included within the relay lens is ...

Ethylene glycol (I) and dimethyl carbonate (II) are prepd. by reacting ethylene carbonate and methanol inthe presence of a heterogeneous catalyst selected from ion exchange resins with quat. ammonium functional gps., sulphonic acid functional gps. and carboxylic acid functional gps., alkali and alkaline earth silicates impregnated into silica, and ammonium exchanged zeolites, at 0-150 deg. C.

Permselective membranes are disclosed which comprise a layer comprising polystyrene, at least a portion of which is sulfonated, and between about 10 wt. % and about 35 wt. % monovinyl arene-hydrogentated diene block copolymer, at least a portion of which is sulfonated. The membranes exhibit a resistance of less than about 8 OMEGA -cm2 in 7 wt. % Na2SO4 and an ion exchange capacity of between abou...

Non-respiring animal matter, e.g. beef, is placed in a storage tank sealed from the air. Oxygen is removed from the tank by evacuating it at a controlled rate while also controlling the temp. to induce boiling. The cool steam clushes oxygen from the tank. The temp. is maintained in the range 0-3.7 deg. C above the freezing point of the liq. and the evacuation removes 0.1-3% per month of the ini...

A precision hair clipper for cutting the hair of a subject to a uniform length which comprises a housing defining a flow chamber attachable to a vacuum hose. At the inlet of the housing a pair of reciprocating blades are configured to maintain a constant and equal flow of air through the chamber. Each of the blades is symmetrical to the other and features a row of parallel, sharp-edged slots. The ...

The framework (2) is associable with a roof boarding (9) and is provided with a plurality of seats (5) for the alignment of tiles (10) arranged with upwardly facing concavity. The seats (5) have a concave configuration and are arranged parallel to one another. In the interspace between two adjacent seats (5) a coupling region (8) is provided for tiles (7) arranged with downwardly facing concavity.

The phase adjusting appts. has a frame and a sprocket which is in contact with the chain from the inside toward a tension side of the chain. A slide member, mounted on the frame through rails, supports the sprocket through a short shaft such that the slide member is movable along the longitudinal direction corresp. to a direction perpendicular to an extension direction of the tension side of the c...

A meat product has a plurality of meat pieces agglomerated together, with the meat pieces being arranged in a helical array through the meat product. Forty to seventy percent of the number of meat pieces in the product are arranged so that they have a minimum angle of from 10 to 50 deg. relative to the axis of the helical array.

A switching network where a large class of combinatorial designs which are well known in the mathematical literature are for the first time applied to advantageously define the pattern of permanent connections effected between network input channels and initial network crosspoints, illustratively by a connection arrangement of a two-stage, rearrangeable network. The class of combinatorial designs ...