Abstract: A cleaning tool for a fluid vacuum type of cleaning machine having a demand-responsive air port for an automatic determination of air as required by the degree of suction exerted at the perimeter of the cleaning head to the end that there is an adequate stream of air entrained into the cleaning tool such that the cleaning fluid therein is effectively dispersed for engagement with the surface or surface covering material to be cleaned and for the avoidance of over or under powering the suction of the lower perimeter of the tool when engaged with various surfaces and surface coverings.

Abstract: A golf ball retrieving device to withdraw a golf ball from a water hole providing an extensible reach and an expandable cage to receive and entrap a golf ball therein for recovery by the operator.

Abstract: A steady beam is focused upon a target member located on a building structure. The target member moves with the deflection of the building structure and the movement of the target is communicated to a programmed controller which responds to the movement indicated by actuating tension adjusting members which are connected to an array of elastic steel rod-like tendons disposed adjacent the structure's main support members. The tension adjusting members are caused to apply tensile force to the tendons to counter the force causing the deflection of the structure and to inhibit the effect of the force on the structure's support members, thus diminishing the extent of deflection and dampening the oscillation of the structure which is incident to the restoration of the structure to a condition of equilibrium.

Abstract: A plasma arc cutting torch embodying an electrode having a swirl tube and a nozzle thereabout, a spring mechanism bearing on the swirl tube and nozzle being caused by them to complete a circuit, the circuit not becoming completed in the absence of one of or both the swirl tube and nozzle.

Abstract: A wire feeding machine automatically forming a coil through an aperture in a product.

Abstract: A metal cutting nozzle attachment for an inert gas welder converting the welder into a metal cutting apparatus having the welding flux core wire energized to become the cutting element and the nozzle being arranged to cause a sufficient increase in the velocity of an air stream passing therethrough to clear away the molten or cut metal.

Abstract: A unitary wall corner protective member consisting of an underlying layer conforming to the wall member and an overlying layer spaced from said underlying layer, said layers having a common end portion having intermediate thereof a hinge unitary therewith and said layers having releasable interengaging other end portions, said overlying layer being yieldingly resistant to impact and an impact absorbing member intermediate said layers carried by said underlying layer.

Abstract: This invention relates to an extruded self-gripping clip poster hanger device consisting of an elongated body portion having a rail or track formed in its upper end portion and having an apertured ear or holder slidable in the rail, the body portion having a flat rear wall and a front wall arcuate in vertical cross section having a bottom lip in gripping engagement with the adjacent facing portion of the rear wall, the bottom lip and facing portion having engaging longitudinal ribs.

Abstract: In connection with a plasma arc metal cutting apparatus, an electrode having vertical movement within a nozzle, said nozzle having a gas supply passing therethrough, an over-center spring mechanism holding the electrode in one operating position, a switch in one position energizing the electrode in engagement with the nozzle and said switch in a second position actuating the spring mechanism to snap the electrode to a position away from engagement with the nozzle and thus draw an arc between the electrode and the nozzle, the arc comprising a plasma flame to cut materials.

Abstract: A bilge pump switch sensing the presence of bilge water by measuring the density of water by using an ultrasonic field penetrating the water, the field extending through the housing of the switch. Thus the internal elements of the switch are isolated from any contact with the water. The ultrasonic field detecting the presence of water activates sensing means in said switch housing to activate the pump, delay means being provided against false pump starts due to wave action as caused by a rocking boat.

Abstract: A wire coiling apparatus having a plurality of wire feeding spools, belts driving a wire coiling arbor, variable speed motors driving the belts and arbor, a lead screw moving the spools across the arbor feeding wire to be coiled on said arbor and a programmed computer coordinating the motors to determine the character of the coil produced.

Abstract: This invention relates to insert strips for a floor covering structure for public walking areas such as in foyers of commercial buildings. The floor structure is made up of connected longitudinal sections, each section having a central longitudinal channel, a raised removable strip being disposed into each channel, to provide a walking surface and the strip having a relatively friction free underlying surface for an easy insertion into a channel and the same being arranged to be retained in the channel.

Abstract: This invention relates to a fishing line bobber consisting of a pair of disk or plate-like members of some thickness formed of a buoyant material and held in a juxtaposed operating position by an axial holding member, said holding member in cooperation with said plate-like member providing a sufficient friction hold for a fishing line wound thereabout and yet permitting a sliding position adjustment of said bobber on the fishing line.

Abstract: A gaseous fuel injector valve for diesel engines having access to the combustion chamber of a cylinder to supplement diesel fuel with natural gas, the valve being adapted to supply gaseous fuel by a programmed electronic control circuit which regulates the valve operation to be in accord with certain sensed engine operation parameters and in timed sequence with the crankshaft position for the optimum time to introduce gaseous fuel.

Abstract: An apparatus mounted upon an automotive vehicle to determine the impact of centrifugal force upon the vehicle in traveling through a curve of a road for the purpose of ascertaining an upper safe speed limit for posting the curve.

Abstract: A display tray structure for a food containing cabinet as in a grocery store, the tray being formed of a suitable fairly rigid bendable plastic material comprised of a blank having some portions cut out and others readily folded, the same being self-secured to form the walls and partitions and having openings for free circulation of cold air and the structure being impervious to the adverse effects of a frigid temperature.

Abstract: A vehicle battery harness including a battery charger having a cable permanently attached to the electrical or battery system of a storage battery equipped vehicle, the cable having a terminal which can only be connected in a correct polarity with the battery charger for a safe connection to charge the battery of the vehicle.

Abstract: A horizontal platform like support member less in length than the length of a rifle, a socket member made up of a unitary piece of a suitable flexible material having a forward strap like extension secured to the support member and a post elevating the barrel of the rifle make up an apparatus whereby the recoil forces of the rifle are attenuated and transferred to the support member.