| Patent Number |
Title Of Patent |
Date Issued |
| 6653788 |
Magnetron having a lowered oscillation frequency and processing equipment employing the same |
November 25, 2003 |
| A magnetron has an anode cylinder, a plurality of vanes extending radially inwardly from the anode cylinder, a cathode filament extending along a center axis of the anode cylinder, an output section including an antenna coupled to one of the vanes, and a magnetic circuit section for supp |
| 5635797 |
Magnetron with improved mode separation |
June 3, 1997 |
| A magnetron having eight anode vanes (2) arranged radially inside an anode cylinder (3) and a helically coiled, directly heated filament positioned along the anode cylinder. The magnetron oscillates at a basic frequency of 2450 MHz. The external diameter of the helically coiled, directly |
| 5087853 |
Magnetron and dielectric heater using magnetron |
February 11, 1992 |
| A magnetron having an anode cylinder, cooling fins fixed thereto, permanent magnets vertically superposed on the anode cylinder and a yoke, serving as a magnetic path, for surrounding these components. The cooling fins extend on the windward direction to facilitate a discharge of the air |
| 5003223 |
Structure of anode of magnetron and a method of manufacturing the same |
March 26, 1991 |
| The invention relates to a structure of an anode of a magnetron and to a method of manufacturing the same. This structure has a cylindrical outer frame portion and a plurality of vanes which are integrally formed with the outer frame portion and which radially extend from the inside of t |
| 4862034 |
Structure of anode of magnetron and a method of manufacturing the same |
August 29, 1989 |
| The invention relates to a structure for an anode of a magnetron and to a method for manufacturing the same. This structure has a cylindrical outer frame portion and a plurality of vanes which are integrally formed with the outer frame portion and which radially extend from the inside of |
| 4862031 |
Magnetron cathode structure |
August 29, 1989 |
| A cathode structure of a magnetron which is used for microwave ovens, industrial microwave heating, and medical purposes is disclosed. One of two leads of the cathode structure of the magnetron, that is, one of a center lead and a side lead is tightly fitted into the spacer, and a metal |
| 4752720 |
Magnetron with fifth harmonic suppression projection in through capacitor seal |
June 21, 1988 |
| A magnetron with a filter case housing a through-type capacitor and a choke coil wherein a mounting plate for the capacitor is fixed in intimate contact with the wall of the filter case along a line encircling a through-hole drilled in the wall of the filter case for drawing out the |
| 4733124 |
Cathode structure for magnetron |
March 22, 1988 |
| A cathode structure for a magnetron representative of a self-oscillation type microwave electron tube comprises a pair of opposite end shields for supporting both ends of a filament helically wound in an axial direction, and a getter fixed on at least an upper end shield positioned on th |
| 4298825 |
Magnetron device |
November 3, 1981 |
| In a forced air cooled type magnetron device having a plurality of cooling fins, the opposite ends of each fin are provided with a plurality of tongue shaped pieces and alternate pieces are bent in the opposite directions to enhance turbulence. |
| 4230968 |
Cathode structure for magnetrons |
October 28, 1980 |
| The cathode filament of a magnetron is constituted by a metallic cylindrical body provided with a plurality of perforations. The cylindrical body may be made of a cylinder or formed by helically winding a web of a metal strip. |
| 4220841 |
Microwave generating device utilizing a magnetron |
September 2, 1980 |
| In a microwave generating device utilizing a magnetron a switching element is connected in the circuit of the cathode heater of the magnetron and ON/OFF-controlled at a predetermined frequency for varying the high frequency output of the microwave generating device. |
| 4205257 |
Magnetron strap ring structure |
May 27, 1980 |
| The radial vanes secured to the inside of a cylindrical anode electrode are short-circuited by inner and outer strap rings which are secured to alternate vanes. The intermediate portions of the strap rings between the points at which the strap rings are secured to the vanes are projected |
| 4205256 |
Magnetron supporting structure |
May 27, 1980 |
| In a magnetron device of the type wherein a magnetron tube is supported by a supporting plate and a waveguide is clamped to the magnetron tube through a metal gasket, the edge of an opening provided for the waveguide is urged against the supporting plate via the metal gasket. |
| 4175245 |
Magnetron magnet assembly |
November 20, 1979 |
| At least one permanent magnet and a pole piece having a projection is contained in an evacuated envelope formed by an anode cylinder and yokes on the opposite ends thereof. The permanent magnet and the pole piece is clamped between one yoke and a holder secured to the inner wall of the |
| 4169987 |
Magnetron tubes cathode support |
October 2, 1979 |
| The magnetron tube is provided with two concentric supports each with one end connected to the opposite ends of the cathode electrode and two concentric cup shaped input terminals respectively connected to the other ends of the supports. Lead wires extending from a filter for preventing |
| 4164684 |
Magnetrons |
August 14, 1979 |
| A cylindrical envelope of the magnetron is provided with annular grooves about its periphery and each of the cooling fins and the mounting plate is provided with an annular member press fitted on the envelope and an integral bent rim which engages the groove. |
| 4143295 |
Cathode structure for an electron tube |
March 6, 1979 |
| A cathode structure for an electron tube comprises a filament unit and a supporter on which the filament unit is mounted. The filament unit includes a thoriated tungsten wire and a tungsten carbide layer formed by carburizing the surface of the wire, the wire having a diameter of about |
