A pair of bait receptacles are provided on either side of a passageway designed to entice the rat to be trapped past a first one-way gate. The passageway leads the rat upwardly through a passageway and a second gate or flipper in middle of climb. At the top, he slides downwardly to a holding tank provided at the rear of the rat trap and readily removable therefrom for disposing of rats trapped therein.

Directional light beam generators are implemented in waveguides with tilted core structures. The waveguides have cores, cladding and jacket layers. A directional light beam with small divergent beam angle is generated after propagating through the waveguides. Divergent light beams with large beam sizes can be converted into beams with small sizes.

A live catch rodent trap has a tubular housing which is sealed at a far end by a removable end cap. A door is pivotably mounted to a near end of the housing, and alternately permits entrance to the housing through a front opening when the door is propped open, and closes the front opening when the trap is actuated by a rodent passing into housing and past a midpoint of the housing. The housing is pivotably mounted to a shroud which surrounds the rear portion of the housing to prevent inadvertent...

An exemplary circuit breaker includes at least one arcing chamber that is filled with isolating gas, extends along a longitudinal axis, is designed to be essentially radially symmetrical, contains an arc area and has at least two power contact pieces. At least one of the power contact pieces is in the form of a moving or stationery tubular hollow contact, which is provided for dissipating hot gases from the arc area into a concentrically arranged exhaust body. A deflection device, which interact...

An optical network unit is associated with a multi-wavelength optical fiber communications system carrying low-power digital signals bidirectionally transmitted at a first and a second wavelength and a high-power analog video signal transmitted at a third wavelength. The unit comprises a housing having a connection for the optical fiber; and an optical filter, first and second optical units, and a beam splitter mounted in the housing. The optical filter is interposed between the fiber terminatio...

A container has one or more openings which extend into the container down elongated passageways. The passageways have needle prodders mounted along sidewalls to discourage rodent retreat once a rodent has entered the passageway. The interior ends of the passageways have doors with small holes for permitting rodents to smell enticing substances on the interior of the container, which doors are structured with lengths greater than the height of the passageways such that the doors extend into the i...

A power supply for supplying energy to a load includes an energy supply source for generating energy, an energy storage device that is charged from the energy generated by the energy supply source, an optional regulator for improving the energy matching of the energy supply source and the energy storage device, an energy converter for delivering energy from the energy storage device and/or the energy supply source to a load, a detector for monitoring the energy level of the energy storage device...

A semiconductor laser basically includes a first cladding layer; an active layer; a second cladding layer; and a current constriction means for defining a current injection region in the active layer. The active layer has a gain region which acquires an optical gain by current injection thereto; a saturable absorption region in which current injection thereto little occurs and light effusion thereto occurs; and an outside region, being in contact with the saturable absorption region, in which cu...

A photographic exposure apparatus has a light path for directing an optical pattern of a display image from an image display to a photosensitive material and a light path for directing an optical pattern of a negative image from a negative film of the photosensitive material. The two light paths are selectively switched from one to the other to project each of the display and negative images onto the photosensitive material at a common exposure station. A mirror is disposed turnably to be movabl...

An animal toss trap includes an enclosure having openings for animal entry therethrough. A generally elongated gate displaced from these openings and positioned within the enclosure presents an animal capture compartment therebeyond. In a normal gate position, the horizontally disposed spikes project from one end of the gate towards a wall of the enclosure so as to present a means of entry or path into the animal capture compartment. An animal on initial progression through this path pushes agai...