An animal trap of the type which precipitates an animal into a disposal chamber (12) through a disposal opening (40), characterized by having a pyramidal bait chamber (11), with an entrance (32) and non-grip internal surfaces, around the disposal opening (40), and a pivoted shutter (42) that normally closes the disposal opening (40), but is actuated by the weight of the animal to not only unclose the disposal opening (40), but also close the entrance (32).

An animal trap for small animals, such as mice, rats, squirrels, and the like, the trap includes an enclosure over which is arranged a bait compartment with two oppositely-facing tilting bottom panels, each panel being mounted on a pivot in the bait compartment with a base edge having a counterweight, a magnetic means, and a spring mechanism on one side of the pivot positioned proximate to the pivot and with a facing distal edge on an opposite side of the pivot and spaced from the pivot. Two ram...

A mousetrap (10) is made of a pivoting platform (12) suspended over a pitfall (14). The platform (12) is balanced in a manner such that it normally assumes a horizontal position, thus giving a mouse an appearance of a stable bridge over the pitfall. When the mouse (42) steps onto the platform (12) for the purpose of obtaining bait placed thereon, however, the platform (12) spins and dumps the mouse into the pitfall thereby trapping it.

A trap is provided for rodents, such as mice, rats and similar small animals, which consists of a cabinet having an upper entrance, to allow the rodents to enter and a lower chamber to retain the rodents. A platform is provided having a first end and a second end. A component is for pivotally mounting the platform across its center between the first end and the second end within the cabinet. A structure is for maintaining the platform in a normally horizontal position, with its first end level w...

An animal trap is provided with an enclosure, inside of which a pivoting member, referred to herein as a "Confinement Activating Teeter-totter" (CAT), is pivotally disposed so that its front end pivots downward when an animal enters the trap and steps on it. A blocking member on the front of the CAT then blocks the entrance, forcing the animal to go toward a bait near the exit at the back of the trap. The CAT then pivots under the weight of the mouse, thereby resetting. If, instead of exiting, t...

An improved rodent trap for use where sanitary conditions are required. The trap housing includes a rodent activated trip mechanism which dislodges a door prop causing the spring or weight biased door to latch shut trapping the rodent inside. Air seals are provided around the door so the rodent is caused to suffocate. A transparent inspection panel, which may be the door, is provided for allowing the user to determine whether the trapped rodent is still alive.

A method for manufacturing a floating gate field effect transistor includes the steps of forming a plurality of first band-like insulating films over a semiconductor substrate in a parallel, spaced-apart relation and a second insulating film between the first insulating films and having a thickness smaller than that of the first insulating film, forming a plurality of first conductive layers selectively over the insulating layer and a plurality of second band-like conductive layers over the firs...

A method for controlling a temperature of a heating device in an image processing apparatus includes the steps of: setting the temperature of the heating device to a first temperature corresponding to a standby temperature upon activation of the image processing apparatus; increasing the temperature of the heating device to a second temperature corresponding to a fixing temperature upon activation of an image forming operation; increasing the temperature of the heating device to a third temperat...

In a nonvolatile semiconductor memory device and a method of producing the same, the nonvolatile semiconductor memory device includes a semiconductor substrate of a first conductivity type, a pair of spaced source/drain diffusion layers of a second conductivity type different from the first conductivity type, a floating gate electrode formed on a channel region disposed between the pair of source/drain diffusion layers in the surface of the semiconductor substrate in an insulated relationship wi...

An automatic rat killing device includes a box having an opening at its top and a stairway leading to its top. A pair of closure plates are pivotally mounted at their one ends on the box for movement between horizontal positions where the two closure plates are mated together at their other ends to close the opening and vertical positions where the closure plates are separated apart to open the opening. A solenoid is mounted on the box and has a stop lever normally engaged with the closure plate...