Abstract: An electronic controller for a vehicle leveling system comprises an extend-enable switch, a retract-enable switch, an all-activate switch, and at least one group-activate switch. It is configured to generate an all-extend electronic signal upon coordinated actuation of the extend-enable switch and the all-activate switch, an all-retract electronic signal upon coordinated actuation of the retract-enable switch and the all-activate switch, a group-extend electronic signal upon coordinated actuation of the extend-enable switch and the group-activate switch, and a group-retract electronic signal upon coordinated actuation of the retract-enable switch and the group-activate switch. Vehicle leveling systems having the electronic controller further include a plurality of jacks operably controlled by the electronic controller and a power system.

Abstract: A door check assembly comprises a guide block and a one-piece or multi-piece elongate linkage having a range of travel back-and-forth through the guide block between a first position and a second position corresponding to open and closed positions, respectively, of a door assembly incorporating the door check assembly. A locking pin or other check-lock member is mounted in the guide block for movement between a locking position and an unlocking position. A check-lock actuator, e.g., hand-operated, electric, etc., is operatively connected via linkage directly or indirectly (i.e., alone or in combination with other link members) connecting the check-lock actuator to the check-lock member. The check-lock actuator is mounted in a door at a position, e.g., remote from the check-lock in order to be more convenient for the user. The check-lock actuator is operative via the linkage member to move the check-lock member between the locking position and the unlocking position.

Abstract: An electronic controller for a vehicle leveling system comprises an extend-enable switch, a retract-enable switch, an all-activate switch, and at least one group-activate switch. It is configured to generate an all-extend electronic signal upon coordinated actuation of the extend-enable switch and the all-activate switch, an all-retract electronic signal upon coordinated actuation of the retract-enable switch and the all-activate switch, a group-extend electronic signal upon coordinated actuation of the extend-enable switch and the group-activate switch, and a group-retract electronic signal upon coordinated actuation of the retract-enable switch and the group-activate switch. Vehicle leveling systems having the electronic controller further include a plurality of jacks operably controlled by the electronic controller and a power system.

Abstract: A recreational vehicle water heater includes a tank for holding water to be heated and a heating element to heat the water in the tank. The tank has an inlet port and an outlet port. A cold water supply conduit is in fluid communication with the inlet port. A mixing valve has a first inlet port, a second inlet port, and an outlet port. The outlet port on the tank is in fluid communication with the first inlet port of the mixing valve. A cold water mixing conduit is in fluid communication with the second inlet port of the mixing valve. The mixing valve is configured to regulate a flow of heated water through the outlet port on the tank and a flow of cold water through the second inlet port of the mixing valve to output a flow of water at a desired temperature through the outlet port of the mixing valve.

Abstract: A ball screw mechanism has an opposing thread provided by an integral male thread formed at one end of a nut received on the screw. The male thread is of a smaller form than the female thread on the screw so as to not normally be in contact therewith, but should ay loss of the balls occur with the resultant slight relative axial shift of the screw and nut, the male threads engage to limit such relative axial movement to protect connected equipment. Both the nut male and female threads may be machined from a cylindrical nut blank.

Abstract: An awning-type insulated glazing assembly includes an insulated glazing having a first glazing pane and a second glazing pane mounted parallel to and spaced from the first glazing pane. The first glazing pane has a marginal portion extending beyond the second glazing pane in at least a first direction in a plane of the first glazing pane. A mounting hinge defines a hinge axis and is secured to the insulated glazing for hingedly mounting the insulated glazing for awning-type movement about the hinge axis. A window regulator is secured to the insulated glazing for controlling the awning-type movement of the insulated glazing about the hinge axis.

Abstract: A jack includes a motor, a gear assembly operably connected to the motor, a ram, and a plurality of screws driven by the gear assembly to move the ram.

Abstract: A window assembly includes a pane defining a plane, and a latch bolt housing mounted to the pane. A latch bolt is slidingly mounted to the latch bolt housing for movement in a plane substantially parallel to the plane of the pane between a first position and a second position. A biasing member is operative to urge the latch bolt toward the first position, and a release handle remote from the latch bolt is operative to move the latch bolt from the first position toward the second position against a biasing force of the biasing member.

Abstract: A gooseneck trailer coupler is disclosed which secures a first structure such as a towing vehicle to a second structure such as a trailer. The coupler is provided with a mounting element extending from the first structure, a chuck having a top end and a base at a bottom end opposite the top end, with the chuck attached to the mounting element at the top end and adapted to receive a ball mounted to the second structure. A locking assembly is adapted to releasably secure the ball and the chuck, and comprises a ring gear mounted around the chuck and movable from a locking position where the chuck is secured with the ball and an unlocking position where the chuck is unlocked from the ball, wherein the ring gear translates from the base toward the top end of the chuck as the ring gear moves from the locking position to the unlocking position. The locking assembly can also comprise at least one jaw mounted in the chuck for engaging the ball when the ring gear is in the locked position.

Abstract: A door check for holding a door in an open position is disclosed, which is particularly useful for thin doors. The door check comprises a check body attached to the door and having an opening. The door check pivots with the door about a first axis. A main link is slidable through the door check opening as the door pivots. A second link is pivotably attached to the main link, and pivotably about a second axis with respect to a rigid member. As the check body pivots about the first axis, the second link pivots about the second axis and the main link translates through the opening in the check body. The main link may have an irregular surface so that a large force may be required to move the door back from the open position to a closed position.

Abstract: The invention is a flexible corner piece for use in the construction of a spacer frame for insulated glass panels. The corner piece is provided with opposing end sections suitable for mating with spacer tubes. In addition, the flexible corner piece has a variably flexible center section having a smooth and contiguous outer face opposing a parallel serrated face, thereby allowing the corner piece to flex along a variable radius.

Abstract: A water heater for a recreational vehicle which employs both gas and electric powered system for heating the water within the water heater, wherein both the gas powered and electric powered systems are controlled through a single user interface control. The present invention provides a water heater for a recreational vehicle wherein a hot surface ignition system is used in conjunction with the gas burner and the electric resistance coil is immersed within the water such that either gas stored on board the recreational vehicle, or land-based electrical power can be used to heat the water either independently or in combination. Through the use of a single temperature sensor, and a single operator control, the water can be most efficiently brought up to the appropriate temperature in the most convenient manner for the user.

Abstract: A low cost room temperature electrochemical gas sensor for sensing CO and other toxic analyte gases has a solid protonic conductive membrane with a low bulk ionic resistance. A sensing electrode and a count counter electrode, which are separated by the membrane, can be made of mixed protonic-electronic conductors. Embodiments of the inventive sensor also include an electrochemical analyte gas pump to transport the analyte gas away from the counter electrode side of the sensor. Analyte gas pumps for the inventive sensor include dual pumping electrodes situated on opposite sides of the membrane, and include a means for applying a DC power across the membrane to the sensing and counter electrodes. Another embodiment of the inventive sensor has first and second solid protonic conductive membranes, one of which has a sensing electrode and a counter electrode separated by the first membrane, and the other of which has dual pumping electrodes situated on opposite sides of the second membrane.

Abstract: A low cost room temperature electrochemical gas sensor with humidity compensation for sensing CO, alcohol vapors and other toxic analyte gases has a solid protonic conductive membrane with a low bulk ionic resistance. A sensing electrode and a counter electrode, optionally a counter electrode and a reference electrode, which are separated by the membrane, can be made of mixed protonic-electronic conductors, or can be made of a thin electrically conducting film such as platinum. A reservoir of water maintain the solid protonic conductive membrane at constant 100 percent relative humidity to compensate for ambient humidity changes. Embodiments of the inventive sensor also include an electrochemical analyte gas pump to transport the analyte gas away from the counter electrode side of the sensor.