Abstract: The present dental implant comprises a hollow perforate trans-mandibular or -maxillary bolt, adapted for receiving a trephined core of bone, for transverse implantation in the maxilla or mandible in conjunction with contiguous straps. These contiguous straps tighten against the periosteum, encase the alveolar ridge and thread through an adjustable implant receptor having a receptor site for abutment thereon. As a result of the combined hollow bolt/strap structure, the dental implant achieves stability by means of (1) medullary bony union with the perforate bolt; (2) subperiosteal bony union with the perforate contiguous straps; and (3) mechanical union afforded by the alveolar-ridge-encasing structure defined by the bolt and contiguous straps. The dental implant thus positioned can be used to support teeth, partial dentures or an entire dental arch. Implant materials may be those known in the art but are preferably biologically inert stainless steel and/or titanium alloys.

Abstract: A mid-mount lawn tractor comprising an engine, front and rear wheels, and a working implement or lawn mower mounted between the front and rear wheels. A transmission is disposed adjacent the rear wheels and includes an upwardly extending input section. The transmission is housed in a transmission case defining an opening at an upper portion thereof for exposing the input section. A hydraulic stepless change speed apparatus is disposed above the transmission. The change speed apparatus includes a downwardly extending input shaft for receiving power of the engine through an endless belt, and a downwardly extending output shaft connected through the opening of the transmission case to the input section of the transmission.

Abstract: A method for cooling the extracranial area including the face and, optionally, also including the mandible, during emergency care of cardiac arrest or severe shock; the method is preferably implemented by means of a hood- or cap-like topical cold pack which requires no refrigeration. Extracranial cooling causes two thermal changes in the physiology of the cardiac or respiratory patient: extracranial vasoconstriction promotes maximum perfusion to the brain during CPR or severe shock, and the resultant conductive intracranial cooling lowers the oxygen demands of the individual brain cells, particularly those of the cerebrum. These two phenomena together postpone damage to brain cells in the event of cardiac arrest or severe shock. Cooling also thermodynamically slows any degenerative processes which may have already commenced. The hood- or cap-like topical cold pack contains the unreacted constituents of an endothermic reaction, such as pellets of ammonium nitrate (NH.sub.4 NO.sub.

Abstract: Platinum black is electrochemically plated onto a conductive substrate, such as a platinum electrode, by positioning a counter electrode and the conductive substrate in a platinum(IV) ion plating solution. An electric current is passed through the counter electrode, substrate and plating solution for a predetermined period of time. The plating solution and conductive substrate are subjected to ultrasonic agitation while the plating is carried out. The plating solution preferably includes chloroplatinic acid and lead ion.

Abstract: A shaft seal assembly having an annular member affixed to the shaft for rotation therewith, a sleeve encompassing the shaft and being biased axially towards the annular member and a free floating sealing ring interposed between the annular member and the sleeve to prevent pressurized working substance form leaking about the shaft is disclosed. The sealing ring includes internal flow passageways which act to reduce the pressure of lubricant flowing therethrough to both effectively cool the free floating ring and to reduce the pressure of the lubricant obviating the necessity of a separate breakdown bushing.

Abstract: A system for computer vision in association with a computer comprises a solid state image sensor or optic ram, a lens, a clock circuit for sequentially addressing the image sensor, and an edge detect circuit for detecting edges in the output bit stream of the image sensor. The edge detect circuit generates an interrupt signal for application to the clock circuit to stop the clock from advancing the addresses and for application to the computer to signal it to read the column and row address currently generated by the clock circuit.

Abstract: A surgical accessory, and method for using it, for facilitating manual cardiac massage. The device is a generally disc-shaped pad adapted to receive the thumb of the user and to append from the inner thumb surface. The pad is approximately 3-10 centimeters in diameter, 0.5-2 centimeters in width and may secure the thumb by a loop, indentation aperture or the like. The generally disc-shaped pad may be a fluid-filled, foam or solid resilient structure. In order to use the present device, the practitioner attaches the disc to the inside surface of the thumb on the hand which he or she intends to use for cardiac massage. The disc is aligned to oppose the curved surface defined by the palmar skin on the fingers. Cardiac massage is executed as usual, and the device displaces the pressure exerted by the thumb over the myocardial surface in contact with the disc. A more even pumping pressure is thus exerted, and the chances of perforating or distressing the heart with the thumb are minimized.

Abstract: A system for controlling production in an oil well comprises a first level sensor mounted upon the outer surface of the tubing near the lower end of the tubing and a second level sensor mounted upon the outer surface of the tubing above the first level sensor. The first level sensor is tuned to a first electrical signal frequency. The second level sensor is tuned to a second electrical signal frequency. A control device at spaced intervals transmits electrical signals of the first and second frequencies down the oil well and senses the liquid level by detecting impedance.

Abstract: A tilt pad bearing assembly for use in supporting a rotating shaft is disclosed. The bearing assembly includes lubricant means for effectively cooling separate individual bearing pads, and separate cooling channels for selectively cooling a portion of the bearing pad. The bearing pads each have a specific end treatment to act in combination to provide an anti-spragging effect. Additionally by selectively cooling a portion of the bearing pad, the bearing pad may have separate configurations for low speed and high speed applications such that boundary lubrication is achieved under low speed conditions and dynamic lubrication is achieved under high speed conditions.

Abstract: In NMR spectrometers, a probe coil has been disposed close to a sample that is placed in a uniform polarizing magnetic field. Conventionally, this coil has comprised several turns which are wound on the curved surface of a cylindrical sample region. The present invention provides a probe coil having an odd number of turns and capable of detecting signals with high sensitivity. The probe coil can be made to have an inductance best suited to the purpose of the observation.

Abstract: A controlled lathe having a rotatable main spindle with a hollow interior and a plurality of radially adjustable guide bodies for guiding a rod having a portion located within the hollow interior of the main spindle. Each guide body rests on a support body and is adjustable with respect to the support body by an axially movable inner tube located within the hollow interior of the main spindle. Axial movement of the inner tube to adjust the guide bodies is effected by an adjusting member which is mounted on the end of the inner tube and which is rotatable with the main spindle during normal lathe operation. The adjusting member is threadedly connected to a member which is attached to the main spindle, and a holding device secures the adjusting member against rotation when the guide bodies are to be adjusted which causes axial movement of the adjusting member and the inner tube due to the threaded connection.

Abstract: An advertising box which can be attached to a post, such as a parking meter support post, comprises a pair of similarly-shaped, flexible flat panels, each panel including a four-sided center section hingedly connected along respective edges to an upper, lower and pair of side members that fold inwardly about the center section and contact along adjacent edges to form an open-sided, half-box assembly. The upper members, lower members and opposite side members of two-half box assemblies are fastened together with rust-resistant rivets to form a unitary structure about the post. The upper and lower members each include a U-shaped notch formed of a pair of spaced sides and a semicylindrical basin for accomodating a cylindrical post therebetween. The unitary structure is secured to the post with a banding clamp; two mounting brackets positioned about 180.degree. apart on the clamp; and a pair of bolts having security heads and sized to fit within threaded apertures in the mounting brackets.

Abstract: There is disclosed a column for use in a continuous particle separation apparatus utilizing a centrifugal field. The column comprises a column base constituting an outer frame, a spacer having a cutout portion at its center, an intermediate ring having a slot and a variable diameter, and a top ring mounted inside the intermediate ring. The intermediate ring has an inlet port and an outlet port for introducing and discharging fluid near the slot. The intermediate ring has an inclined inner surface. The top ring has an inclined outer surface which is pressed against the inclined inner surface of the intermediate ring to expand the intermediate ring. Thus, the spacer is pressed against the base. A separation channel is formed between the inner wall of the base and the intermediate ring within the cutout portion of the spacer.

Abstract: An axial flow liquid pump comprises an outer tube, an inner tube positioned within the outer tube, and a driven shaft journaled within the inner tube. An impeller is secured near to the lower end of the shaft. A conduit delivers liquid to be pumped from the exterior of the outer tube to the lower end of the inner tube. The conduit is sized for permitting liquid to be drawn into said impeller such that the pressure in the vicinity of the lower end of the inner tube is equal or less than the pressure at the exterior of the outer tube near the conduit intake but sufficient not to draw air down through the inner tube.

Abstract: A new Begonia variety is characterized by its superior growth and flowering. The overall appearance is very pleasing with a strong contrast between the light peach color of the bloom and the dark green color of the foliage. The new cultivar has a high tolerance to botrytis and powdery mildew.

Abstract: A new Begonia variety is characterized by its long lasting, highly floriferous white bloom, short and compact plant form, vigorous growth and smooth texture. The new variety has a high tolerance to botrytis and powdery mildew.

Abstract: A new and distinct variety of Anthurium scherzerianum is characterized by a large, round and smooth spathe of a dark orange-red stable color, a strong and compact growth, early blossoms, fast growing and resistance to common root diseases and low propagating temperatures.

Abstract: A new Begonia variety is characterized by its fullness of form and extensive branching. Flowers are brightly colored and clean in appearance. The plant is highly floriferous and the entire plant becomes covered with bloom. The new cultivar has a high tolerance to botrytis and powdery mildew.

Abstract: A new Begonia variety is characterized by its pastel pink blooms which are numerous and long lasting. The plants exhibit superior vigor and strength. The new cultivar has a high tolerance to botrytis and powdery mildew.

Abstract: A new Begonia variety is characterized by its naturally short, compact plant with extensive and vigorously formed branches which are strong. The contrast between the orange flowers and dark green foliage is very pleasing. The new cultivar has a high tolerance to botrytis and powdery mildew.