Abstract: Some empty beverage aluminum cans (such as for beer, Coke, Pepsi and V8 vegetable juice) and empty food cans are recycled and some are thrown away, causing an environmental hazard. The can connector for beverage and food cans can connect empty beverage aluminum cans or food cans together to make things, such as children chairs, foot stools, little dog houses, toys, etc. for practical use or for fun according to an individual's creativity and imagination.

Abstract: Weight balancer for toilet seat is to be installed onto toilet seat to keep toilet seat open by the mechanism of seesaw to prevent it from being dirtied by urine. Toilet seat can be opened or closed by an implemental pusher instead of using hand to touch the bacteria contaminated toilet seat to open or close it.

Abstract: Flying disc equipped with V-shaped lifting blades is a flying disc which is equipped with several V-shaped lifting blades on the top. Because of the extra lifting force of the equipped V-shaped lifting blades when turning it can fly higher than a regular Frisbee. It can be turned either clockwise or counter-clockwise to produce extra lifting force to fly higher. Therefore a left-handed player and a right-handed player can play with the same flying disc equipped with V-shaped lifting blades.

Abstract: The rotary cutting die of a paper shredder for making pattern paper strips has built-in trapezoid pattern or rectangular pattern cutting blades. It can cut a piece of paper into trapezoid or rectangular paper strips. These trapezoid and rectangular paper strips can be folded to make double-wing pouches to be articulated each other to make toys.

Abstract: Electric cord storage reel with a central open-end roller which has an inner opening can store about two foot long of electric cord in open-end roller. Therefore one does not have to un-wind the whole length of electric cord to expose both plug end and socket end for usage because the end which is stored inside open-end roller can be removed any time from its opening to expose both plug end and socket end for usage.

Abstract: When one wants to store an electric cord he/she first has to start to store electric cord either from plug end or socket end. And when he/she wants to use electric cord he/she has to unwind electric cord all the way to expose both plug end and socket end for use. Dual electric cord reels with an open-slotted mutual middle wheel or a fenestrated mutual middle wheel can store the plug side of electric cord in one side of its reel and socket side at the other side of its reel with both plug end and socket end exposed outside. Therefore one can unwind plug end and socket end of electric cord simultaneously to the length he/she needs for use and does not have to unwind whole electric cord for use.

Abstract: Pocket toy building piece composes two or more identical mirror image pockets which are connected together by U-shaped bridge connector at the correlated sides of their openings. By overlapping numerous pocket toy building pieces one can build a variety of things, figures and animals. Each pocket building piece can have built-in bridges to interlock with those of other piece. Pocket toy building pieces can be easily assembled and disassembled.

Abstract: A toilet seat is easily soiled by urine of men and boys if they have not lifted the toilet seat before they urinate. The dual functioned apparatus for lifting toilet seat can solve this problem by one mode of automatically lifting toilet seat by the mechanism of a seesaw or another mode of manually stepping on footboard to lift the toilet seat with minimum effort by the mechanism of a seesaw. Dual functioned apparatus for lifting toilet seat can be converted simply by changing the hanging position of weighted connectors on levers from the mode of automatically lifting apparatus to the mode of manually lifting apparatus by stepping on footboard and vice versa.

Abstract: Flapper tank ball pendulum comprised a buoyant hollow ball which has a small bottom opening, a handle which is fixed at the top of buoyant hollow ball and a fenestrated cone-shaped shell which is fixed at the bottom of buoyant hollow ball. One can easily fasten its handle onto lever of toilet flushing unit. Flapper tank ball pendulum can be lifted by pushing downwards pushing handle of toilet flushing unit to drain whole tank of toilet water to flush human solid waste and also can be pushed downwards by elevating manually pushing handle of toilet flushing unit to close drainpipe of toilet water tank to stop draining toilet water. Only about one quarter of water in toilet water tank is enough to flush human liquid waste. Human urinate several times a day and defecate only once a day. Flapper tank ball pendulum can replace flapper tank ball to save huge amount of water to solve the shortage of water supplies in big cities in the States.

Abstract: Magnetic car window wiper comprises one inner magnetic plate, one outer magnetic plate and one connecting string. The outer magnetic plate is placed outside car window and inner magnetic plate is placed inside car window. In raining day driver can move inner magnetic plate against car window from side to side to attract and move by magnetic force outer magnetic plate from side to side to wipe rain water off outside car window for better vision of side mirror.

Abstract: Belt with two handgrips provides grips for hands to grasp to straighten arms for upper body extension. Patient who is suffering from backache secondary to pinched nerve can wear this device and grasps handgrips with hands to straighten his/her arms to extent upper body and vertebral space to decompress the pinched spinal nerve to relieve backache. It is especially helpful for patients who have to sit in a car or airplane for a long trip.

Abstract: Upright lift toilet seat comprises one toilet seat with an upward-turned rear end, two pull strings and two weights. Upright lift toilet seat is kept at upright position by weight through the mechanism of seesaw and can be turned to horizontal position by hand. Male has to lift ordinary toilet seat to urinate to prevent toilet seat from being wetted by urine. If toilet has installed upright lift toilet seat then male does not have to raise toilet seat every time before urinating.

Abstract: Upright lifted toilet seat consists of a toilet seat, one or two built-in anchor rod(s) and one or two heavy weight(s). Upright lifted toilet seat can be raised automatically to upright position by heavier leverage weight of heavy weight(s) than that of toilet seat by the mechanism of seesaw. It can be turned into horizontal position by hand. Upright lifted toilet seat can be installed on a toilet to prevent man from urinating on toilet seat.

Abstract: An apparatus to keep toilet seat at upright position consists of a toilet seat griper, a lever which is fastened onto toilet seat griper at right angle and a heavy weight which can turn forward or backward on lever. An apparatus to keep toilet seat at upright position can be installed onto a toilet seat to keep it at upright position by the mechanism of seesaw and the toilet seat can be pushed to horizontal position by hand. This apparatus to keep toilet seat at upright position can prevent toilet seat from getting wet by urine when man urinates.

Abstract: Level mark for flushing small amount of toilet water can be adhered and mounted onto toilet water tank just underneath toilet handle of toilet water tank to guide us how far should we push downward the toilet handle to elevate flapper tank ball just high enough to drain small amount of water to flush liquid human waste. We urinate several times a day and only defecate once a day. If we use small amount of water to flush urine in toilet we can save a large amount of water to resolve the shortage of water supply in the big cities of the United States.

Abstract: Dual function door lock plate with built-in lock opening(s) is a door lock plate which has built-in lock opening(s). It is to be fastened onto door jamb to guide door lock pin to slide smoothly into lock hole and its lock opening(s) can be locked by lock piece(s) to prevent door from being opened outside.

Abstract: The flat tire repair kit at present on the market contains band rubbers, a tube of super glue and a needle. It is very troublesome to repair a flat tire because the flat tire has to be removed from wheel before it can be repaired by the repair kit on market. Besides it is very hard to insert the band rubbers into nail hole with needle. The present invented barrel formed screw or barrel formed nail can repair flat tire while it is still on wheel. After applying super glue to the present invented barrel formed screw or barrel formed nail user can screw or hammer it into nail hole on flat tire while it is still on wheel. The form of barrel formed screw or barrel formed nail prevents it from coming loose. The submitted picture demonstrates only one of the possible drive design, which is a cross-shape. Barrel formed screw or barrel formed nail can be used temporarily to repair a flat tire before the nail hole can be repaired by a machinist at auto body shop.

Abstract: Two levels toilet water flushing unit provides two levels of water flushing, one level to drain smaller amount of water to flush liquid human waste and another level to drain larger amount of water to flush solid human waste. Everybody urinates several times a day and defecates only once a day. If we use the level to drain a large amount of water to flush solid human waste and the level to drain smaller amount of water to flush liquid human waste we can save a very large amount of water to relieve the shortage of water supply in big cities in the States.

Abstract: By tightening string of a musical instrument musician can change the tone and pitch of sound. The more tightening is the sting the stronger is the sound. The more tightening are our vocal cords the high tone and pitch of our voice will be. With the state of art of medical technology laryngologist can burn vocal cords with Laser beam or other heating source to created minimum scars to tighten vocal cords to enhance voice.

Abstract: To fly kite requires wind and skill. Balloon kite can fly high with no wind. To fly balloon kite requires no skill. You do not have to be an expert to fly balloon kite. In a year only windy season is suitable for flying kite. With balloon kite every day is a flying kite day and every child can fly it. Children can enjoy flying balloon kite all year round.