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A method for inducing cats to exercise consists of directing a beam of invisible light produced by a hand-held laser apparatus onto the floor or wall.
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| Number | Title | Issue Date |
| 6911770 | Apparatus with a cap and cover assembly, an electron gun with a cap assembly, and a method of using a tube A cap can comprise an aperture, and an attenuator may block the aperture during at least one point in time. In one embodiment, the attenuator can include a cover that may be displaced by a spring. In another embodiment, such as an electron gun, may comprise a suppor... | 06/28/2005 |
| 6891321 | Oil-free electron source having cathode and anode members adjustable with five degrees of freedom An electron source includes a vacuum chamber within which a vacuum is maintained by a vacuum pump. An insulated receptacle is mounted within the vacuum chamber and has a receptacle mounting flange. The receptacle mounting flange is used to establish a coordinate sys... | 05/10/2005 |
| 5814939 | Mechanically tunable magnetron injection gun (MIG) A mechanically tunable magnetron injection gun (MIG) provides an annular, relativistic beam of electrons for injection into an axially aligned magnetic field of a gyrotron-class device. The electron emitter encircles a center electrode. Turning a knob adj... | 09/29/1998 |
| 5767614 | Cathode ray tube having annular holding member A cathode ray tube includes a panel having a fluorescent screen formed on an inner surface thereof, a stem, and a neck between the panel and the stem. An electron gun is supported by a supporting structure in coaxial alignment with the neck. The electron ... | 06/16/1998 |
| 5686785 | Electron gun having electrically isolated and adjustable cathode An electron gun for producing a beam of electrons has an elongated, linear thermionic cathode and a focusing electrode. The opposite ends of the cathode are engaged by adjustable holders which enable the spatial separation between the cathode and focusing... | 11/11/1997 |
| 4591753 | Electron beam apparatus comprising a wire source An electron beam apparatus comprises an electron source with an electron emitter in the form of a wire, suitably of metal, which slides on two supports. The two supports are constructed and spaced apart at such a distance (not more than 1 millimeter) that... | 05/27/1986 |
| 4566023 | Squeezable electron tunnelling junction A mechanically adjustable tunnelling junction includes two electrodes defining a gap supported on substrates. Spacers maintain the electrodes in spaced apart relation. At least one of substrates is mechanically deformable, whereby the application of an ex... | 01/21/1986 |
| 4471265 | Apparatus for counteracting the cathode current increase occurring during warming-up in a travelling-wave tube in response to variation in the grid-cathode distance Apparatus for compensating the injurious increase of the cathode current occurring during the initial operation period of a travelling-wave tube when, during successive warming-up, the grid first approaches the cathode and then assumes the nominal distanc... | 09/11/1984 |
| 4338542 | Directly heated cathode assembly Disclosed is a directly heated cathode assembly for a cathode ray tube electron gun, comprising first and second conductive support members disposed to face each other via an insulating base plate, a ribbon filament stretched between the first and second condu... | 07/06/1982 |
| 4259610 | Electron gun assembly for cathode ray tubes and method of assembling the same An electron gun asembly comprising direct heated cathodes each having an electron emitting member fixed on a filament which is stretched between a pair of support means disposed face to face with each other on a substrate and a plurality of grid electrode... | 03/31/1981 |
| 4250425 | Rotating anode X-ray tube for tomodensitometers A hollow, cylindrical, rotating anode, X-ray tube for tomodensitometers. This tube contains a bell-shaped, hollow, cylindrical anode functioning by transmission, which is swept on its inner surface by an electron beam and produces in cooperation with a collima... | 02/10/1981 |
| 3997807 | Mechanically adjustable electron gun apparatus An electron gun apparatus comprises a cathode subassembly which is movably mounted relative to a fixedly mounted and registered grid/anode subassembly to permit mechanical adjustment of the cathode with respect to the grid/anode subassembly. An evacuated ... | 12/14/1976 |
| 3988627 | Electron source A device for generating a high level electron current pulse includes a housing whose interior can be evacuated from outside the housing, a cathode electrode located in the housing and arranged to be connected to a high voltage generator, an anode electrod... | 10/26/1976 |
| 3976908 | Electron beam generator with linear cathode An electron beam generator with a linear cathode which has at least one end clamped to enable the cathode to move longitudinally. A beam forming electrode is at the same potential as the cathode and has an exit opening for the electron beam. The beam-form... | 08/24/1976 |
