A competitive game device having mainly a plurality of balls, two sets of obliquely mounted tubes, at least two slidable blocks slidably mounted on two sets of horizontal guide rails and connected with bellow-shaped tubes so that a player can deflect the balls put into the tubes by an opponent player to a winning basket of the player. Stopper means is also provided on each of the tubes so that the players can deposit some balls at selected tubes and thereafter open the stopper means at a selecte...

A color identifying device includes an emitter for supplying light to throw on a tested object, an amorphous photosensor, an amplifier, an ADC and a microprocessor. The emitter is formed with a LED producing three original colors or with three separate LED producing separate colors of red, green and blue. The photosensor receives the reflected light from the object and sends signals of three colors to the amplifier which amplifies the signals and sends them to the ADC. Then the ADC converts the ...

The present invention provides a naturally disintegratable cushion material and the process for making the material. The cushion material is non-toxic and environmental protective that it can be disintegrated naturally after being discarded. The cushion material is made from main material powder of grain shells, added with fillers (such as calcium carbonate), binders (such as polyvinyl alcohol) in suitable percentages, and further mixed with softeners (such as trimethylolpropane, polyethylene gl...

An adjustable connector for a lawn rake has a sleeve, a rake head and a lever. The rake head is connected in front of the sleeve. The lever is attached pivotally to the sleeve and has a cam head operationally pressing against a shaft of the lawn rake when the lever is pivoted to lock the handle in the sleeve. By directly pressing the cam head of the lever against the handle, other accessories such as separate compression clamps in the prior art are obviated so that the structure of the adjustabl...

A hammer-type stapler with cartridge is a tool using in building working for driving staples into a working object, comprising a casing having a hollow hammer casing on the front portion of the casing for containing a driving unit. The driving unit moves vertically by inertia force and having a driving element for driving staples, and an elastic element for recoiling the driving unit. A replaceable cartridge is installed in the casing and adjacent to the driving element having two identical, upp...

A screw includes a cylindrical shank having an upper portion formed with spiral circular threads and a lower portion formed with spiral triangular threads, each of the spiral triangular threads having three budges having three sharp edges and three pointed tips, the pointed tips of the spiral triangular threads being located at different positions, the cylindrical shank having a pointed end at a lower portion thereof, whereby the screw can be easily and rapidly turned into a piece of hard wood.

A hammer-type stapler with cartridge is a tool using in building working for driving staples into a working object, comprising a casing having a hollow hammer casing on the front portion of the casing for containing a driving unit. The driving unit moves vertically by inertia force and having a driving element for driving staples, and an elastic element for recoiling the driving unit. A replaceable cartridge is installed in the casing and adjacent to the driving element having two identical, upp...

A screw comprising a shank having an upper portion formed with spiral circular threads and a lower portion formed with spiral triangular threads, each of said spiral triangular threads having three sharp edges and three pointed tips, said pointed tips of said spiral triangular threads being located at different positions, whereby the screw can be easily and rapidly turned into a piece of hard wood.

An ignition enhancement device for enhancing ignition efficiency of car engine is installed between a high voltage wire and a spark plug. The ignition enhancement device has a capacitor. Two sides of the capacitor are connected to two metal conductive rods. An insulating sleeve encloses the capacitor; and two sides of the insulating sleeve are formed with two insertion holes. An outer wall of each of the two sides of the insulting sleeve has an annular slot; and two ends of the capacitor being c...

A mobile signal light set is disclosed to include three warning signal bars collapsibly arranged on a base to form a light-emitting warning triangle, which base holding a dry battery and a rechargeable battery on the inside, a lamp bulb at one end, a battery charging/discharging control switch, a warning signal bar on/off switch for controlling on/off status of the LEDs of the warning signal bars, a lamp bulb on/off switch for controlling on/off status of the lamp bulb, a cable with AC adapter c...