Abstract: A bolt having an opening formed therethrough is slidably located in the bore of the gun. The bolt is held in a rear position by a sear with the bolt opening closed by a valve which extends into the bolt opening and engages a rear facing bolt seat. A passageway extends into the bolt opening for allowing pressurized gas to flow into the bolt opening. A trigger mechanism releases the bolt for allowing the bolt to be moved forward for allowing the valve and seat to separate for allowing the gas to flow through the bolt opening for forcing a ball from the rear end of the barrel out of the gun. The valve and bolt are constructed to allow initially a small amount of gas to flow through the gas outlet of the bolt and then to allow the full force of the gas to flow through the gas outlet. This causes the ball to start rolling before the full force of the air impacts the ball thereby minimizing breakage of the ball in the gun barrel.

Abstract: The game board is an elongated rectangular shaped member having a top side. At each end, a series of axial scoring numbers 1, 2, 3, 4 and a series of lateral scoring numbers 1, 2, 3 are formed on the top side.

Abstract: The pump is formed by a body having a cavity with a cylindrical chamber in which a piston is reciprocated toward and away from an inlet and outlet aperture. A crank shaft extends through an aperture formed through the piston transverse to its axis and through opposite walls of the cavity. The crank shaft has a cam located in the piston aperture. Upon rotation of the crank shaft, the cam alternately engages opposite facing cam surfaces of the piston in the piston aperture to reciprocate the piston to draw fluid into the chamber from an inlet path and then to pump the fluid out through an outlet path. The piston has spaced apart O-rings on its outer wall which engage the chamber wall upon reciprocation of the piston.

Abstract: The solenoid includes an electrical coil having a central opening in which is fixedly located a rod formed of a material of the type capable of being magnetized when in a magnetic field. A plunger is supported for movement toward and away from one end of the rod. A permanent magnet is supported by the plunger. In one embodiment the permanent magnet is located such that the plunger and permanent magnet are held next to the coil when the coil is in a deactivated condition. When the coil is activated, the magnetic field produced by the coil repels the permanent magnet and hence the plunger away from the coil. The polarity of the permanent magnet can be reversed in position such that normally the permanent magnet and hence the plunger are normally repelled away from the rod end when the coil is in a deactivated condition. When the coil is activated in a given manner, the magnetic filed of the coil pulls the magnet and hence the plunger next to the coil.

Abstract: The dental handpiece includes a disposable head assembly and a reusable handle which are removably coupled together. The head assembly includes a housing formed of plastic material forming a cavity in which is located a turbine operated drill assembly with a drill burr extending out of a lower opening. The upper wall of the housing is formed against the top of the drill assembly to permanently fix the drill assembly in the cavity such that the bearing mechanism for rotatably supporting the turbine and drill burr is integral with the head assembly. The head assembly also has a neck with a cavity for removably receiving the proboscis of the handle by way of a rear opening. The handle supplies and removes air to and from the head cavity for operating the turbine and also supplies air, water and light from the proboscis which are directed toward the burr by way of an outlet opening. The handle is snap-locked to the head assembly when the proboscis is located in the neck cavity.

Abstract: The meter pit is formed by a hollow cylindrical wall having a top end and a bottom end with top and bottom openings leading to the interior thereof. The top end has structure forming upper spaced apart slots extending outward from the upper opening with the slots having a radial dimension capable of receiving the bottom lugs of annular lid covers which are located at different radial positions.

Abstract: Pain in an animal during animal husbandry procedures is blocked and tetany of the muscles caused by the application of spaced pulses of electrical current. The pulses are of minimum or zero width on initial application to the animal, and a gradual increase of pulse width cuases gradual increases in pain blockings until tetany occurs without distress to the animal.

Abstract: The cleaning apparatus has a body with two wheels on opposite sides of the body which are driven by two electric motors for moving the body forward or rearward or for turning the body. A cleaning device which uses pressurized air is supported by the body for providing a cleaning function for cleaning the inside of the duct. The cleaning device is supported by a support member. Another electric motor is employed for moving the support member upward and downward. Lights and a video camera are located at the front of the body for allowing the duct to be monitored and inspected by way of a remote video screen. Electrical leads are coupled to the motors to the lights and to the camera for remote control purposes. A conduit is coupled to the cleaning device for supplying air under pressure to the cleaning device.

Abstract: The floor advertisement apparatus is used in a cavity formed in the floor of a building. A lower holding layer is located and secured in the bottom of the cavity. An upper holding layer with an opening extending therethrough has a transparent layer is secured to one side of the upper holding layer. The transparent layer and the upper holding layer are located in the cavity. An advertising layer is secured to the lower side of the transparent layer within the opening for viewing from above. Both of the holding layers may be magnetic material or one can be magnetic material and the other metal attracted by magnetic lines of force for removably holding the upper layer to the lower layer when the two layers are located next to each other such that the transparent layer with its advertising layer is removably held in the cavity. In another embodiment, a support layer is secured in the cavity.

Abstract: The toilet ventilation system has an intake member located directly adjacent the toilet bowl of a toilet. The intake member is coupled to a manifold supported by the toilet which permits odors from the toilet to be transferred from the intake member and manifold to a ventilation pipe located adjacent the toilet. A fan is located at a remote end of the ventilation pipe for drawing odors through the intake member, the manifold, and the ventilation pipe, and expelling the odors into a ventilation area. The intake member is removably coupled to the manifold through a manifold inlet and may be removed from the manifold. The ventilation pipe is removably coupled to the manifold by way of a manifold outlet. The manifold may be rotated about the ventilation pipe or moved out of the way when the intake member has been removed from the manifold inlet, for cleaning purposes.

Abstract: The fire extinguisher particularly useful on a cooking stove, is formed by a container having a fire extinguishing powder, an explosive charge and a heat sensitive fuse. The fuse actuator the charge for forming an opening in the container through which the powder passes. A screen is located across the opening formed to meter the flow of fire extinguishing powder. A vent is provided to release the pressure in the container resulting form actuation of the explosive charge. A tiltable hanging assembly is provided as well as an extension fuse. For use on a gas stove, a system including an acoustic detector and circuity is provided for turning off the gas upon detection of the sound produced upon actuation of the explosive charge.

Abstract: Two slidable plates are provided which can be moved to first positions for providing expanded passages for receiving the necks of bottles and to second positions to provide contracted passages for engaging and holding the necks of the bottles. A spring biased mechanism is provided for releasably securing the plates in the first and second positions.

Abstract: A bolt having an opening formed therethrough is slidably located in the bore of the gun. The bolt is held in a rear position by a sear with the bolt opening closed by a valve which extends into the bolt opening and engages a rear facing bolt seat. A passageway extends into the bolt opening by way of a valve for allowing pressurized gas to flow into the bolt opening. A trigger mechanism releases the bolt for allowing the bolt to be moved forward for allowing the valve and seat to separate for allowing the gas to flow through the bolt opening for forcing a ball from the rear end of the barrel out of the gun. Forward movement of the bolt is stopped by a lock member located in an aperture formed through the wall of the bolt which is forced outward into a slot of the gun body when the lock member reaches the slot. A cock valve located in a cock valve chamber releases gas from the cock valve chamber to force the lock member back into the bolt aperture and to force the bolt back to the rearward position.

Abstract: A pivotal housing member has an end pivotally coupled to an end of a base housing member for movement between a retracted or folded position and an extended position. The pivotal housing member has a pulsed deflagration or detonation device located therein for producing pulsed deflagration or detonation pressure waves for cleaning purposes. When the pivotal member is in its folded position, the two housing members may be moved through the opening formed through the wall of a boiler, etc. for cleaning the interior surface of the wall with the pulsed pressure waves. In order to increase the wall area cleaned from a given wall opening, the two housing members may be rotated about an axis of the base housing member and the pivotal housing member pivoted to different extended positions from its folded position.

Abstract: The cleaning system has a head to which water is applied for cleaning carpets, etc. The head has a water nozzle for injecting hot water on the carpet, etc. and a vacuum inlet with vacuum hose coupled to a vacuum container. A lid having an outlet is provided for covering the top of the container. A hose is connected to the lid outlet and to a vacuum blower. A lid conduit forming the lid outlet extends through the lid with inlet openings formed through the lower portion of the outlet conduit. A chamber extends from the lower side of the lid surrounding the lower portion of the lid conduit with a bottom wall located below the lower portion of the lid conduit. A plate is connected to the bottom of the lid conduit and extends outward forming a dead space between the plate and the bottom wall of the chamber. An opening is formed through the side wall of the chamber for passage of air from the container into the chamber and to the vacuum device.

Abstract: A toilet ventilation system has an intake member located directly adjacent the toilet bowl of a toilet. The intake member is coupled to a manifold which permits odors from the toilet to be transferred from the intake member on the toilet to a ventilation pipe located adjacent the toilet. A fan is located at a remote end of the ventilation pipe for drawing odors through the intake member, the manifold, and the ventilation pipe, and expelling the odors into a ventilation area. The intake member is removably located in the manifold through a manifold inlet and may be removed from the manifold. The ventilation pipe is located in the manifold through a manifold outlet. The manifold may be rotated about the ventilation pipe when the intake member has been removed from the manifold inlet, for cleaning purposes. In another embodiment, the toilet bowl has an integrally coupled exhaust manifold with a removable receptacle or sump for receiving liquids and for allowing the manifold to be readily cleaned.

Abstract: The pliers have a first arm with first and second ends and a second arm with first and second ends. The two arms are pivotally coupled together. The first ends include a slotted member located opposing and facing a bearing member respectively. The slotted member has a slot with an open end extending therethrough for receiving a hook end of a fishhook. The bearing member has a bearing surface for supporting a rounded portion of the fishhook such that a pork rind may be located between the two members and attached to the hook of a fishhook by moving the first ends to the closed position. The second ends include a hook retaining member located opposing a hook receiving member.

Abstract: The apparatus includes mounting brackets which are secured to the roof of a vehicle. Two elongated tubes are mounted parallel to each other extending lengthwise above the roof on the mounting brackets. An elongated support is slidably located in each tube. The supports each comprise a front section pivotally coupled to a rear section with the legs of the ladder pivotally coupled to the rear sections. The ladder and the supports cooperatively slide between a storage position and an operating position. In the storage position the supports are located substantially in the elongated tubes and the ladder is located on the mounting brackets. In the operating position, the supports are located substantially out of the tubes rearward of the vehicle with the front sections supported by the tubes and the rear sections moved and locked to a vertical position with their lowered ends supported by the ground. The ladder then may be pivoted against a building, etc.

Abstract: An articulated aerial lift has a platform that is coupled to one end of a boom. The other end of the boom is connected to an upper end of a riser. An arm couples the lower end of the riser to a turret. As the arm moves between a lowermost position to a raised position, the riser rotates between a forward position to a backward position in order to reduce an overturning moment caused by the platform. Rotation of the riser can be accomplished with nonparallel arms.

Abstract: The refractive surgery keratotomy knife has a handle with a footplate with an opening for receiving a surgical blade. The footplate is adapted to be placed against the cornea of the eye. The blade is held by a blade support member which can locate the cutting edge of the blade in the opening of the footplate and beyond for forming a radial incision in the cornea of the eye by being pressed directly into the cornea tissue. The cutting edge of the blade is fixed at an acute angle relative to the bottom of the footplate either due to the design of the blade or with the use of an adjusting mechanism of the knife.