Abstract: The present invention is a device for attachment to the leg of a boat lift, wherein the device has a housing with a lower surface of substantial area and an air entrapment volume therein; the air entrapment volume is coupled via a connectable air step to an air hose which connects to an air valve. A source of pressurized air is coupled to the air valve.

Abstract: A flame detector has a sensor for producing a digital waveform representing a flickering flame. Its turning points are detected and the magnitudes between successive such points are measured. The value of each such magnitude is plotted on a graph whose horizontal axis represents the current value and whose vertical axis represents the immediately preceding value. Points are produced lying in regions away from the diagonal and from the axes. If the detected waveform originates from a regularly varying interfering source, the corresponding points will lie on or near the diagonal. If the interfering source is a waveform undergoing step changes, the corresponding points will lie adjacent to the axes. In this way, discrimination between flames and interfering sources of radiation can be made.

Abstract: A jeep for use with a vehicle for carrying heavy loads on conventional roadways. The jeep is supported by many independent wheel/axle units mounted for transverse movement relative to the jeep. A fifth wheel movable in two orientations, vertical and longitudinal, is provided for coupling a load to the jeep.

Abstract: A portable crane having an outwardly-extending counterweight arm and detachable counterweight for detachment therefrom, for transport of said crane separate from transport of the counterweight. The counterweight has a base which may be extended and retracted from the counterweight, to provide a variable support for the counterweight.

Abstract: A multiple selector logic circuit for selecting divisor multiples in 2-bit, non-restoring divide sequences, which provides a proper and accurate quotient result and remainder, and which produces rounding and indication of exact or inexact result in conformance with ANSI/IEEE Standard 754-1985; the multiple selector logic circuit incorporates semiconductor circuits including a multiplier table having a particular matrix of multipliers which meet the standard.

Abstract: An elbow connection for pneumatic conveying systems is provided. The elbow has an inlet opening, an outlet opening and a curved area of short radius extending therebetween. The section of the elbow between the inlet and outlet openings has a cross-sectional area that is substantially greater, at least 1.5:1, than the cross-sectional area of the inlet and outlet openings to reduce the wear of the elbow wall caused by the material conveyed therein.

Abstract: A closed type connecting block including a shutter which close and open an opening formed on a housing and which is biased toward a position to close the opening. The shutter and the housing are formed with notches which sealingly receive a core inserted into the connecting block therebetween. The connecting block also includes a pivotable jack mounted therein to enable users to easily insert and remove a plug connected to the cord from communication equipment.

Abstract: A lightweight portable display support incorporating a display panel, including two vertical support columns, each column formed of two sections of elongated flexible material, typically plastic, wherein one section of material has a width dimension larger than the second section of material, both sections of material having an attachment device extending along their respective elongate edges to cause the wider section of material to bow outwardly when attached to the narrower section, and including an overhead horizontal beam supported between the two vertical support columns, the beam being constructed substantially the same as the respective vertical columns.

Abstract: A divider head assembly for attachment to a dividing and rounding machine, the divider head assembly incorporating a cover plate and attached plug plate, both of which have a central aperture therethrough. A cutter blade holder has a neck which slidably projects through the apertures, and a cutter blade holder is attachable to a cutter blade subassembly by means of fasteners. Access holes through the cover plate and plug plate permit access to the fasteners which attach the cutter blade holder to the cutter blade subassembly. The cutter blade subassembly is formed of a geometric arrangement of blades, the blades being welded together to form a unitary geometric arrangement.

Abstract: An enclosure is provided for containing the logic elements and ancillary components for computing systems. The enclosure is a unitized central electronics enclosure (CEC) wherein the primary structural element is the enclosure for the logic elements. This enclosure or logic cage includes unitary side plates, a double-sided backplane and top and bottom cast guides. The integrated structural and enclosure functions accommodate the structural needs of a CEC, as well as containing and supporting the logic elements and ancillary equipment.

Abstract: A foldable towing hitch attachable to a vehicle, having a pair of articulately attached arms extendable therefrom, one of said arms being foldable for collapsing both arms against the vehicle for storage, and further having a hitch bracket retaining the extended arms in a converged relationship and attachable to a second towed vehicle.

Abstract: Apparatus and method for performing floating point divide operations in 2-bit, non-restoring iterations, wherein multiples of the divisor are formed by selective gating of one or more representations of the divisor into a single 3-input adder circuit, to calculate the partial quotients and subsequent partial dividends. The apparatus produces, without the need of separate holding registers, the zero, 1/2, 3/4, 1 and 3/2 multiples of the divisor.

Abstract: An oxygen detection device utilizing a water permeable humidifier and two galvanic cells connected in series gas flow connection, each of the galvanic cells having an anode and cathode; the respective cathodes being connected to a common connection between two load resistors, and the respective anodes being separately connected across one each of the load resistors; the device further having a third galvanic cell in close proximity to a water permeable tube to provide an oxygen getter and humidifier.

Abstract: A dog boot for the rear leg of a dog having a foot, a tarsus joint and a fibular tarsal. The dog boot is comprised of a sole extending from the foot to the tarsus joint. An upper heel section is fastened to the sole and fixed proximally the tarsus joint shaped so that the boot is anchored on the leg by the fibular tarsal. The upper heel section has an opening for permitting the foot to enter and be withdrawn from the boot. An upper toe section is fastened to the sole which overlaps the upper heel section thereby biasing the opening of the upper heel section to a closed position.

Abstract: A device for individually removing newspapers from an inclined stack, including a movable carriage which is placed over the stack, the carriage having an endless conveyor carrying spaced-apart grippers, the conveyor being connected to drive mechanisms to grip a topmost newspaper and feed it along the incline through a withdrawal slot.

Abstract: A capacitance sensor for measuring changes in thickness of a dielectric film, such as plastic film, passed through the sensor, having an upper and lower housing projecting from a back plate, the lower housing having an upper electrode surface and the upper housing having an insulator aligned with the electrode surface; the insulator having an electrode conneced to an electrical conductor; the materials for constructing the two housings, the electrode and the insulator all having a coefficient of linear temperature expansion of less than 1.times.10.sup.-6 per degree Centigrade.

Abstract: A multi-line electronic media barrier or safety system for preventing liquid contamination of air lines, including a capacitance proximity sensor for detecting a foreign undesirable medium such as paint in an air line. When foreign media is detected, a main air valve is closed which in turn closes valves connected in the air lines, thereby blocking passage of air or liquid and protecting pneumatic control apparatus. The media barrier is especially designed for use with automated or robotic paint spray devices utilized in industry.