Abstract: An electric scooter of standing drive has a pair of dolly wheels located behind the rear wheel to work as a parking stand. At the parked position with the handlebar stem folded, the scooter can be pulled away by hand, and vertically stand using the dolly wheels and the rear end of the deck frame to touch the ground. The scooter has a front wheel drive to assist it to start from stop, eliminating the kicking start. An electric scooter of standing-sitting drive is an improvement to the electric scooter of standing drive type. It has a seat of flat plate hinging on a pair of supporting parallel posts. The seat works as a front part of the standing deck for standing drive. When the posts rise to vertical, the seat is set for sitting drive. Its handlebar stem can be tilted and set to desired angles for comfortable driving.

Abstract: A pre-stressed concrete pipe is made by casting a concrete pipe inside a metal cylinder and then being pre-stressed by injecting solidifying compound under pressure into the boundary between the metal cylinder and concrete pipe, and includes a pair of end rings within the metal cylinder, each having a metal ring with an annular groove and an elastic band having a curved end to provide a rounded corner on the concrete pipe. After the solidifying compound is solidified, the concrete pipe retains the compression increasing its strength to withstand pressure, and moments caused by external loads. The pre-stressed concrete pipe further includes a bell ring mounted at one end and a spigot ring having a gasket ring at the other end. A bell clamp is mounted on the bell ring.

Abstract: A conventional passenger vehicle has a lower deck and an upper deck on both sides of its aisle to double its seating areas. Each deck has ceiling and seat heights about the same as that in sedans, and hence without substantially increasing the vehicle height. Both decks are divided into seating sections with partition walls, and in a seating section each deck contains only a row of power reclining seats. Each seat has a power footrest mounted separately on the partition wall in front of the seat for sitting comfort and forming a bed with the seat. The footrest can also be placed to higher elevations to use as a table for eating or working. The footrest is stored vertically to allow more leg room for the seat. In some section of the vehicle each seating section may mount two rows of sitting-only seats to increase the vehicle capacity.

Abstract: A method of constructing a water heater includes the steps of providing a tank having a metal interior tank wall and a heat exchanger positioned within the tank, coating the interior tank wall and the heat exchanger with a first layer comprising glass enamel, and coating a portion of the first layer with a second layer comprising an organic polymer to protect the portion of the first layer from exposure to water in the tank.

Abstract: A method of constructing a water heater includes the steps of providing a tank having a metal interior tank wall and a heat exchanger positioned within the tank, coating the interior tank wall and the heat exchanger with a first layer comprising glass enamel, and coating a portion of the first layer with a second layer comprising an organic polymer to protect the portion of the first layer from exposure to water in the tank.

Abstract: A pre-stressed concrete pipe is taught that incorporates a cylinder (20), an annular ring (34) and an annular offset member (40) welded together. A seal band (44) stretches over the annular offset member and the assembled annular ring is welded within a first end (22) of the metallic cylinder. A strip of pressure sensitive tape (54) seals the internal interface. An O-ring (52) is positioned around the annular ring during joint attachment of a pipeline. The cylinder second end (24) utilizes a hat member (56) and a resilient seal band (44a) stretched over the hat member with the assembled hat member welded within the second end of the cylinder. A strip of pressure sensitive tape (54) seals this interface. A film layer of release agent (64) is adhered to the inside of the metallic cylinder where a concrete tube (68) is cast within the cylinder.

Abstract: An improved enclosed motorcycle (310) is taught, having an electric motor (324) and an improved handlebar assembly (326) employing a torque arm (358) with spherical rod ends (360). The foot brake pedal (328) is improved by attached rigidly to the frame (320) and the bench seat (330) is now slideably attached and the back portion of the bench seat capable of tilting providing the requisite adjustment. The landing wheels (332) are now individually mounted on a support arm (372) hinged on the frame retained by a spring loaded take-up rod assembly (374) allowing stabilizing on uneven surfaces. The entrance doors upper half windows each have vent window (386) hinged independently on a front edge with the hinge including a locking head (392) secured to the window frame for ventilation. The leg doors (340) are hinged horizontally onto the entrance doors (338) and open at a predetermined speed before the motorcycle has stopped.

Abstract: A method for manufacturing a jacket for a storage-type water heater includes applying a coating to a sheet of metal, printing content on the coating to form a printed sheet, and forming the printed sheet into a finished jacket. The coating may be a thin film or may be a layer of paint. The content may be printed with an inkjet printer.

Abstract: A corrosion-resistant, copper-finned heat exchanger for a water heater is provided. The heat exchanger includes a conduit through which water runs, heat-transfer fins extending from the conduit and an anti-corrosive coating containing electroless nickel. The heat-transfer fins contain copper, and the coating is deposited directly onto at least one of the copper heat-transfer fins.

Abstract: An enclosed motorcycle (10) that utilizes a structural frame (14), a pair of tandem wheels (36,38), an engine (40) and a handlebar assembly (46) provides transportation for a single driver. A foot brake pedal assembly (96) is pivotally affixed to the frame for stopping the motorcycle and a bench seat (132) is rigidly attached to the frame for seating the driver. A pair of outrigger landing wheels (140) are attached to the motorcycle frame on a common axle and have automatic control to extend the wheels at a predetermined road speed, for preventing tipping at low speeds and when stopped. An enclosure (16) is disposed over and attached to the frame which includes a pair of entrance doors (172) and a pair of leg doors (170), one on each side of the motorcycle for access to the seat for minimizing the enclosure envelope and providing effortless entry into the motorcycle. A two piece external passenger seat (272) is provided over the engine with a fold down cargo compartment underneath.

Abstract: A corrosion-resistant, copper-finned heat exchanger for a water heater is provided. The heat exchanger includes a conduit through which water runs, heat-transfer fins extending from the conduit and an anti-corrosive coating containing electroless nickel. The heat-transfer fins contain copper, and the coating is deposited directly onto at least one of the copper heat-transfer fins.

Abstract: An enclosed motorcycle (10) that utilizes a structural frame(14), a pair of tandem wheels (36,38), an engine (40) and a handlebar assembly (46) provides transportation for a single driver. A foot brake pedal assembly (96) is pivotally affixed to the frame for stopping the motorcycle and a bench seat (132) is rigidly attached to the frame for seating the driver. A pair of outrigger landing wheels (140) are attached to the motorcycle frame on a common axle and have automatic control to extend the wheels at a predetermined road speed, for preventing tipping at low speeds and when stopped. An enclosure (16) is disposed over and attached to the frame which includes a pair of entrance doors (172) and a pair of leg doors (170), one on each side of the motorcycle for access to the seat for minimizing the enclosure envelope and providing effortless entry into the motorcycle. A two piece external passenger seat (272) is provided over the engine with a fold down cargo compartment underneath.

Abstract: A corrosion-resistant, copper-finned heat exchanger for a water heater is provided. The heat exchanger includes a conduit through which water runs, heat-transfer fins extending from the conduit and an anti-corrosive coating containing electroless nickel. The heat-transfer fins contain copper, and the coating is deposited directly onto at least one of the copper heat-transfer fins.

Abstract: A set of vehicle electrically actuated reclining seats are provided to replace stationary seats in a van permitting comfortable sleeping. The invention consists of a pair of side walls (30) attached to the van interior, with each side wall including a slotted frame (31) having a horizontal slot (32) therein. A set of rollers (42) on a bench frame (40) interface with the slots permitting the frame to slide horizontally as driven by a first electric motor drive. A pair of seats (60) and back rests (72) are attached to the bench frame, connected to a second electric motor drive such that when the back rest is substantially upright the back of the seat is lower than the front of the seat and when the back rest is pivoted flat the seat is simultaneously raised to a horizontal position parallel to the back rest.

Abstract: A set of vehicle electrically actuated reclining seats are provided to replace stationary seats in a van permitting comfortable sleeping. The invention consists of a pair of side walls (30) attached to the van interior, with each side wall including a slotted frame (31) having a horizontal slot (32) therein. A set of rollers (42) on a bench frame (40) interface with the slots permitting the frame to slide horizontally as driven by a first electric motor drive. A pair of seats (60) and back rests (72) are attached to the bench frame, connected to a second electric motor drive such that when the back rest is substantially upright the back of the seat is lower than the front of the seat and when the back rest is pivoted flat the seat is simultaneously raised to a horizontal position parallel to the back rest.

Abstract: An electric lift camper top is provided for covering a rectangular head clearance opening (31) in a vehicle top structure for camper modification. The camper top consists of a bottom frame (32), including compression springs (38), attached to the vehicle surrounding the opening with a top frame (42) which is in turn attached to the compression springs urging the frames apart. A roof (54) is attached onto the top frame covering the opening in the vehicle. A flexible wall (58) is attached to both the top and bottom frame, securing them together forming a sealed enclosed area, when extended, to allow head room within the vehicle interior. Raising and lowering linkage means, employing front and rear connecting arms (78) and (80) are also jointly attached to the top and bottom frame. Electric drive means, in the form of an electric motor (82) and worm gear (84), are attached to the linkage such that the connecting arms are angularly separated raising or lowering the roof electrically using vehicle electric power.

Abstract: A belt assembly for a pipe lining machine used to make concrete lined pipes. A pipe to be rotated is supported on the exterior surface of a belt loop wound around several pulleys, including a drive pulley and a displaceable pulley which moves laterally in response to slack and tension in the belt loop. A damping assembly is connected to the displaceable pulley to damp vibrations in the displaceable pulley. Preferably, the damping assembly includes a pneumatic suspension member, e.g., air bellows, and a hydraulic damping member, e.g., a hydraulic shock-absorbing cylinder, connected in series to the displaceable pulley.

Abstract: An outer pipe casing (20) and a concrete tube (26) cast inside, form a pre-stressed concrete pipe in its elementary form. Prior to casting, a layer of non-cohesive material (28) is sprayed on the inside of the pipe casing and an annular ring (32) is welded inside adjacent to each end. A resilient seal ring (46) is captivated into the inwardly facing legs (38) of the second channel (36) of each annular ring and a temporary seal (52) separates each annular ring from the material (28). After the concrete of the tube cures, a pressurized solidifying compound (54) is inserted under pressure to a pathway (42) formed into each annular ring and it is also extruded into a region (30) coated by the non-cohesive material. Pressurization of the compound is sufficient to cause the pipe casing to bulge outwardly and compression of the concrete in the tube is achieved. When the compound hardens, the compressive force remains and pre-loads the pipe.

Abstract: A coating composition for preventing corrosion of a substrate including corrodable material, the coating composition comprising: a cycloaliphatic epoxy compound; a polyester compound; and a catalyst.

Abstract: A gated mold for casting concrete pipe requires no wedges or bolts for securement. A core mold may be contracted by lifting at an actuation point, and expanded by resting on a base ring. An external mold may be expanded by lifting at an actuation point, and contracted by resting on a base ring. The mold gates are opened and closed with sets of collapsing links pivotably attached to a longitudinally extending actuation column. Longitudinal motion of the actuation column forces the links to collapse or extend, thereby expanding or contracting the mold. Appropriately positioned actuation and lifting points are provided such that the mold can be lifted vertically along the longitudinal axis containing the mold center of gravity.