Abstract: A pseudo lock gun trigger blocking structure deterring children and uninformed adults from being able to work the trigger and shoot a handgun, rifle or shotgun. A pseudo key member that has the outward appearance of a lock key tumbler is mounted in a first block half to extend to the interior thereof with an opening therethrough having buttress thread engaging grooves on the back side of the opening. The pseudo key member is resiliently biased by an internal spring to an outer position but is resiliently pushable inwardly to an inwardmost position when permitted by a blocking pin being pushed in to an unblocking position against the resilient bias of a spring to permit movement of the pseudo key member to its innermost position.

Abstract: An apparatus and method for attaching a labeled probe to macromolecules such as DNA/RNA fragments or proteins attached to a membrane utilizes a flexible bag having an inlet and an outlet port. Reagents including the probe to which the membrane is to be exposed during the labeling process are stored in reservoirs. Pumps are provided to selectively transfer reagents from reservoirs to the inlet port and for selectively evacuating the bag via the outlet port so that reagents from the individual reservoirs can be sequentially supplied to or removed from the bag while the membrane is positioned therein. One or more rollers are arranged to roll back and forth over the top of the bag to uniformly expose the membrane to the reagent within the bag.

Abstract: A two part spout assembly, where both tubular body and spout member are hollow and cylindrical. The inner tubular body is extended to a stopper dome-shaped nozzle with a large semi-elliptic opening. The spout member has a stopper coupling sleeve conforming to the stopper dome-shaped nozzle, with the semi-elliptic opening of the same size, protruding inwardly and formed integrally with the spout member wall. By rotatably sliding the spout member until it reaches the "off" mark the nozzle is placed to a position to complement the spout member to seal the container against the outflow of its contents through the spout. When rotated by 180 degrees, the two domes and openings are fully aligned and the spout is fully opened.

Abstract: A draw bar sling for lifting heavy loads such as railroad cars includes a lightweight rigid U-shaped saddle made, for example, of an aluminum alloy, having a central shelf for engaging the coupler tongue of the car and a concave passageway extending under the central section. A loop sling comprising a core bundle of high performance fibers, encased in a tubular abrasion resistant covering, extends in through the passageway to form two closed curve eye sections above the saddle through which a crane hook can be inserted to lift the coupler tongue. A cut proof sleeve surrounds each eye section to prevent the hook from cutting the high performance fibers. The cut proof sleeve comprises multiple layers of high performance fibers, and particularly Spectra, woven at right angles and sewn between sheets of abrasion resistant material.

Abstract: A men's purse is disclosed which is typically carried on a waist belt along the leg of the carrier. The men's purse includes a rear oblong compartment and a slim front compartment. The rear compartment has a zipped top opening for gaining access therein and the slim front compartment is formed by a flap which is zippered to the rear compartment. If the flap zipper is opened, the flap may be swung open to gain access to contents stored within the slim compartment.

Abstract: An endotracheal tube holder that includes a face plate assembly which is attached to a patient's head by an adjustable headband. The face plate assembly is formed with a face plate adapted to be positioned over the mouth of the patient and is formed with an open end channel terminating with a V-shaped notch over which is superposed a tube holding block that is affixed to the outer surface of the face plate, and also includes a matching V-shaped notch in which an endotracheal tube can be fixedly positioned by a thumb screw, a bite block being integrally secured to the inner surface of the face plate which is also provided with an aligned V-shaped notch. The face plate also includes an opening for ready access to the patient's mouth, as might be required.

Abstract: A fingerprint ink dispensing apparatus includes a ceramic disk positioned over an ink reservoir in the form, for example, of a felt pad. The ceramic disk has an average porosity of about 40% and an average pore size of about 5 microns. A colored pigment such as carbon black dispensed in a hydrocarbon oil is disposed in the reservoir with the concentration of the carbon black being about 22% by weight and the diameter of the carbon black particles falling within the range of 0.15 to 0.60 microns and the average size being about 0.35 microns.

Abstract: Method and apparatus for automatically changing engine lubricating oil while the engine is running, in which small increments of used lubricating oil are periodically removed from the lubricating oil system, and substantially simultaneously with the removal of each increment of used oil, a corresponding increment of fresh oil is delivered to the lubricating oil system, so the volume of oil in the lubricating system is not reduced by the removal. Oil sump level sensing determines the destination of each used oil increment that is removed. If the sump level is not substantially below a predetermined satisfactory operating level when an increment of used oil is removed, the increment is delivered to the fuel tank for burnoff with the fuel for diesel engines, or to a holding tank for other engines, in a normal oil change mode of operation.

Abstract: A dynamometer for testing engine powered vehicles including an induction motor coupled directly to the vehicle engine or the driven wheels thereof. A computer in response to the engine or wheel speed and the torque applied to or received from the engine or wheels by the motor provides a desired torque signal to a motor power controller to similate the road load and/or vehicle inertial forces encountered by the vehicle during actual operation and to compensate for the parasitic losses of the dynamometer. The motor power controller in turn applies a d.c. voltage to the motor when the desired torque signal is negative to cause the motor to absorb power from the engine or driven wheels and applies an a.c. voltage to the motor when the desired torque signal is positive to cause the motor to supply power to the engine or driven wheels in accordance with the parasitic losses and the road load and/or inertial forces to be simulated by the induction motor.

Abstract: An aspiration-type chemical sprayer for dispensing small quantities of a liquid based chemical into a stream of carrier fluid is disclosed. The sprayer includes a sprayer head assembly sealingly mounted onto a container holding chemicals such as pesticides or fertilizers. A carrier fluid control valve in the sprayer head assembly controls carrier fluid flow from a pressurized source of water past an aspiration orifice which forms the terminal end of an aspiration passageway in communication with the chemical within the container. A rod valve connects the aspiration orifice to the aspiration passageway and the container interior to atmospheric pressure when slid into an open position while providing simultaneous closure of the aspiration and vent passageways so as to seal the chemical in the container when slid into a closed position. The rod valve includes a pair of spaced annular integral sealing ridges and is molded in one piece of a plastic material.

Abstract: A chassis dynamometer apparatus and method for testing motor vehicles includes at least one roll for engaging the driven wheels of the vehicle. A power supplying and/or absorbing unit such as an electric motor supplies and/or absorbs power from the roll. In addition, a force transducer and speed sensor are coupled to the roll for providing force and speed signals. Signals representative of the desired vehicle inertia, the road load to be simulated, the forces attributable to the parasitic losses and the out-of-loop inertia of the dynamometer and vehicle are also provided. A system controller in response to the above signals controls the power supplying and/or absorbing unit in accordance with: ##EQU1## where: Vd=the desired roll velocity;Fm=the measured force signal associated with the roll;PL=the dynamometer parasitic loss signal;RL=the road load signal;Io=The out-of-loop inertia of the dynamometer and vehicle;Ac=the roll acceleration signal;Iv=the vehicle inertia signal; anddt=the interval of integration.

Abstract: A self-contained electronic monitoring unit for attachment to a device, such as a water filter, designed to be used until the occurrence of a predetermined event such as a predetermined number of uses, includes transducer for providing distinct outputs such as different audio output signals. A programmed integrated circuit and use detecting means such as electrical contacts detect each use of the device and monitor when the device is operational, when the end of life event is imminent and has occurred. The integrated circuit is programmed to operate the transducer to produce output signals during each use of the device informing the user that the device is operational, that the predetermined event or end of useful life is imminent and that the useful life has expired. The unit includes a battery for supplying power to the transducer and integrated circuit.

Abstract: A circuit and method of cathodically protecting ferrous metal structures such as pipelines or well casings is described disposed in a conductive medium such as the ground. A pair of terminals are connected to an anode spaced from the structure and to the structure. A source of d.c. voltage is periodically connected across the terminal to cause current to flow to the anode and provide electrons at the surface of the structure to inhibit ferrous molecules from going into solution and damaging the integrity of the structure. The current flow due to the induced emf caused by the reactive inductions of the anode/cathode system is limited to inhibit damage to neighboring ferrous structures by providing a high impedance, e.g. an open circuit, between the input terminals during all or part of the time that the d.c. source is not supplying current to the anode/cathode load.

Abstract: An improved bottle cap device formed so as to have a positive sealing arrangement for use with bottles that store gaseous fluid such as soda water and like beverages, wherein the bottle cap device includes a threaded cap body and a hinged cover or lid that is formed having a sealing semi-spherical structure defined by a depending convex wall that engages a gasket mounted within the cap body when the cover is locked in a close sealed position.

Abstract: An improved bottle cap device formed so as to have a positive sealing arrangement for use with bottles that store gaseous fluid such as soda water and like beverages, wherein the bottle cap device includes a threaded cap body and a hinged cover or lid that is formed having a sealing annular structure which compresses an annular gasket against the mouth of the bottle by a depending convex wall that engages a gasket mounted when the cover is locked in a close sealed position and a pressure release latch for limiting the movement of the hinged cover after it is unlocked from the cap body to relieve pressure within the bottle.

Abstract: An automated electrophoresis and transfer apparatus for separating macromolecules in accordance with their molecular weight and transferring the same to a transfer membrane includes a housing having a perforated intermediate horizontal partition defining an upper reservoir and a lower chamber. A pair of spaced electrodes are provided for generating a horizontal electrical field. A pump is connected between a plurality of containers and the reservoir for sequentially pumping the chemical solutions within the container into the reservoir. A transfer membrane is positioned over the partition and an impermeable sheet is interposed between the membrane and the gel member and withdrawn prior to the transfer operation. A pump provides a small over pressure within the lower chamber which in cooperation with the impermeable sheet substantially prevents chemical solutions from penetrating the transfer membrane prior to the transfer operation.

Abstract: A remote control tiller arm is provided for controlling the operation of an outboard motor. An inverted U-shaped steering boom is attached to the outboard motor and extends over-the motor boat operator. The steering boom includes a throttle mechanism for remotely controlling the speed of the outboard motor. By using the steering boom, the motor board operator can steer the boat from a forward looking position.