Abstract: A voltage protection circuit for controlling an input data signal on a signal-carrying line to a binary data-storage device having an input line for receiving the input data signal comprises two transistors in series having current-control electrodes coupled to an input control terminal and a third transistor having its current-control electrode coupled to the input line with one current-conducting electrode coupled to a voltage source and another current-conducting electrode coupled to current-conducting electrodes of the first two transistors.
Abstract: A method and apparatus for measuring the frequency of radiation is described comprising a pair of filters (2,3) or a beam splitter (30) responsive to radiation from a source of radiation (4) for providing a first output having a magnitude which increases and a second output having a magnitude which decreases with an increase in the frequency of said radiation, a divider (11) for providing a ratio of the magnitudes of said first and second outputs and a comparator (14) and memory (17) responsive to the ratio from said divider (11) for providing an output corresponding to the frequency of said radiation.
November 19, 1979
Date of Patent:
December 29, 1981
Versatile Integrated Modules
Leonard C. Van Der Gaag, Allen Hooker, Gerald Puetz
Abstract: A transistor interface circuit for switching analog differential pairs in response to a flip-flop or combinational logic, both output signals of which remain either high or low during switching transitions. This circuitry prevents the differential pair from momentarily saturating or shutting off during the switching transition.
Abstract: A ski binding, including a housing (10) in which there is mounted a movable clamping member (11,12) having an open position for receiving a clamp-receiving member (3) and a closed position for clamping the clamp-receiving member and a movable step-in member (40) mounted in said housing (10) having a part (41) thereof extendable beyond the surface of the housing (10) for opening and thereafter closing the clamping member (11,12) as the extendable part (41) of the movable step-in member (40) is pressed toward the housing (10). In one embodiment, the movable step-in member (41) slidably engages a facing surface (60) on a part of the clamping member (11,12) during the opening and closing of the clamping member (11,12).
Abstract: A strain gauge plethysmograph is provided comprising an elastic tubular member (2) filled with a non-mercury electrically conductive gallium-indium alloy which is fluid at room temperature. The tubular member (2) is attached to an inelastic strap member (1) at spaced points (5,6). The length of the strap (1) between the points of attachment (5,6) is limited to approximately 120% of the nominal length of the tubular member (2) for restricting stretching of the tubular member (2).
Abstract: A method of and apparatus for calibrating and providing an output from a strain gauge (1) is described. In the method and apparatus there is provided a constant-current source (10). Coupled to the current source (10) is an amplifier (12,13) for providing an output corresponding to the difference between the voltage drop across the strain gauge (1) and a reference voltage from a source (14). The reference voltage is used to adjust the current in the strain gauge (1) from the current source (10). After the current is adjusted, further changes in the voltage drop in the strain gauge (1) relative to the reference voltage is used for providing an output of the voltage difference relative to the reference voltage. The adjusting of the magnitude of the current from the constant-current source (10) is provided by a calibrate-and-zero sample and hold circuit (16) having a sample and hold period sufficient to reduce to negligible levels the effects of the dielectric absorption of an associated capacitive means (20).
Abstract: A bulk dry food product storage, display and dispensing apparatus is described. In the apparatus there is provided a plurality of modules. In each of the modules there is provided a plurality of hoppers. Each hopper comprises a pair of side wall members and a curved bottom member. The curved bottom member comprises a front portion and a rear portion. The front and the rear portions each comprise a continuously changing radius of curvature, the continuously changing radius of curvature on the front portion being different from the continuously changing radius of curvature on the rear portion such that fresh product being added to the hopper from the rear thereof by being dumped on the rear portion of the curved bottom, slides down the rear portion, moves existing product forwardly and upwardly and displaces the existing product being supported on the front portion, causing it to fall on top of the fresh product moving therebeneath.
May 19, 1978
Date of Patent:
July 8, 1980
Peter I. Hughes, Robert J. Lynch, James J. Ahrens
Abstract: Plumbing devices (10,30,60) are described comprising a source of light in a gimbal system (12,13,51,72) for providing two oppositely directed aligned vertically oriented beams of light. The gimbal system (12,13,51,72) is removably attached to a support (14,31,61). A handle (14a,45,62) is provided for holding the plumbing device at various distances from underlying and overlying surfaces. Each of the light beams can be focused individually. A windshield (15) is provided for removable attachment to the support for preventing wind induced oscillation of the light source. A rigid frame (32,33,65) is provided for holding the light source in a fixed position relative to an object to be plumbed and for removable attachment to the object while the object is being plumbed.
Abstract: A firearm and in particular a pistol is described in which there is provided a novel self-retracting trigger-actuated safety mechanism for preventing involuntary firing of the firearm, a trigger-actuated magazine-latching mechanism for latching and releasing a magazine, a trigger-actuated firing and trigger release mechanism and a slide assembly safety mechanism for preventing firing of the firearm if the slide assembly is not in its firing position. In the self-retracting trigger-actuated safety mechanism there is provided a safety trigger member and a ball point pen point extending and retracting type mechanism including a safety mechanism linkage member which is selectively positioned in and withdrawn from the path of travel of a sear in the firing mechanism with successive actuations of the safety trigger member.
Abstract: A step-in side-clamp safety ski release system is described. In the system there is provided a first assembly for mounting to the sole of a ski boot and a second assembly for mounting to the upper surface of a ski. One of the first and second assemblies comprises a plate member and the other of the first and second assemblies comprises a pair of inwardly directed facing protuberances for overlaying the plate member in a releasable engagement. In the binding there is also provided a movable overcenter mechanism. The overcenter mechanism is provided with a resilient member for providing a spring force which is movable between a clamping position for releasably, resiliently clamping the plate member and the protuberances together, and an unclamping position for voluntarily separating the plate member and the protuberances.
Abstract: A hand mixing apparatus is described comprising a handle having an upper and a lower section. The upper section is provided for manually rotating the apparatus and may comprise a high-friction surface including a slight bulge. Attached to the lower section there is provided one or more slotted mixing blades. The mixing blades comprise, separately and in combination, straight and angulated rectangular blade elements as well as L-shaped blade elements.
Abstract: A smoking apparatus comprising a pipe bowl for holding burning smoking material, means for connecting the pipe bowl to a means for containing water, means for drawing smoke from the pipe bowl through water contained in the water-containing means before it is discharged from the apparatus and valve means located in the pipe bowl, having a closed position for preventing smoking material in the pipe bowl from falling into the water-containing means and an open position for dumping the residue and ash from the smoking material burned in the pipe bowl into the water-containing means. The pipe bowl comprises a generally cylindrical interior surface. In one embodiment the valve means comprises a disk-shaped member and means connected to the disk-shaped member for rotating the disk-shaped member between its open and closed positions.
Abstract: A method and apparatus for growing seafood in commercially significant quantities on land, comprising a means for and the steps of transporting water from a source of water to a plurality of algal reservoirs, each having a volume equal to or exceeding 21/2 feet .times. 1/8 acre; inoculating the reservoirs with phytoplankton from a source of phytoplankton having a minimum density of 10.sup.1 to 10.sup.3 organisms/liter; adding fertilizer to the water in the reservoir daily for providing a mixture and subjecting the mixture to sunlight for increasing the density of the phytoplankton in the water to a density exceeding 10.sup.
Abstract: Image detection and intensification under exceedingly low levels of illumination, as of 10.sup.-2 to 10.sup.-5 foot candles, is made possible by combining the advantages of conventional inverter image tubes with those of recently developed microchannel plate wafer tubes. Under environmental conditions necessitating an overall luminous gain of 50,000, a microchannel plate wafer tube is coupled to the output of a conventional inverter image tube permitting cone viewing by operating personnel. This is made possible by operating the microchannel plate wafer tube at low electron gain levels such that microchannel plate noise characteristics are maintained at acceptable levels. The objectives of reduced size, weight, and power consumption approximating that of a single stage of the presently used three stage night vision systems are thereby achieved.
Abstract: A portable, collapsible hoisting and supporting apparatus is described comprising an arched cross member and two triangularly-shaped end supporting assemblies for supporting the ends of the arched cross member, means for attaching hoisting tackle to the arched cross member and a windlass or the like to one of the end assemblies, and means for folding the arched cross member and the end assemblies for reducing the overall size of the apparatus for transportation and storage.
Abstract: A tubular aluminum housing, having vertically centered pinpoint light bulbs at either end in nose cones, is suspended on a stand by a gimbal system, and has an on-off switch and batteries such that the light bulbs will emit aligned light beams above and below the housing. The nose cones are threaded onto the housing such that they can be moved upwardly and downwardly for focusing of the light beams. Colluminator and magnifying lenses are contained in the nose cones for magnification and additional focusing. A wind shield is disposed on the stand around the housing.
Abstract: A label or message instructing that the mattress be turned over from left to right is affixed to the upper surface of the mattress or is provided thereon by means of printing, stencilling, sewing or weaving or by any other convenient means. A second label or message is similarly provided on the underside of the mattress for instructing that the mattress be turned over from head to foot. When the mattress is to be rotated, it will only be necessary to read the instruction label on the exposed surface, which will indicate which of the alternate turning operations is to be performed. Instead of using two labels, a single label or message can be provided on a vertical surface of the mattress, such label or message bearing two instructions in inverted relation to one another, the first instructing that the mattress be turned over from left to right, the second instructing that the mattress be turned over from head to foot.
Abstract: An equipment-moving dolly comprising a walking beam having a rigid planar member with a planar surface, said planar member having attached thereto, approximately perpendicular to the planar surface, one or more rigid, weight-bearing arms, said arms terminating in a means for attaching the walking beam to a carriage base; a carriage base having a rigid member, said rigid member having attached thereto two or more rigid, weight-bearing struts, including a pair of outer struts approximately perpendicular to a plane taken through the carriage base, with each strut parallel to the other struts, said outer struts having a means for pivotably attaching said walking beam to said carriage base for allowing the walking beam to pivot relative to said carriage base, and having a means for attaching said struts to a roller assembly; and a roller assembly comprising two or more roller devices in tandem having a means for individually attaching each roller device to the struts of the carriage base.
Abstract: A bowling practice device .Iadd.(1) .Iaddend.having a ramp .Iadd.(2) .Iaddend.with a concave upwardly sloping inclined surface and a pad .Iadd.(5) .Iaddend.located at the top of the ramp .Iadd.(2) .Iaddend.for stopping forward motion of a bowling ball .Iadd.(32), .Iaddend.and causing the ball .Iadd.(32) .Iaddend.to roll in a reverse direction down the ramp .Iadd.(2) .Iaddend.and toward a bowler. Means .Iadd.(10,11,12) .Iaddend.are also provided for supporting the ramp .Iadd.(2) .Iaddend.in a free-standing manner on a horizontal surface and for preventing movement of the ramp .Iadd.(2) .Iaddend.relative to the surface upon an impact by the ball .Iadd.(32).Iaddend..