US3986066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron beam generating system with cathode
Assignee: Licentia Patent Verwaltungs GmbH
•
Filing: 1975-04-30
•
Granted: 1976-10-12
•
Expires: 1995-04-30
Abstract
Abstract In an electron beam generating system including a cathode, a Wehnelt electrode, an anode, three groups of at least two electrically conductive rods, the rods of each group being connected to a respective one of the cathode, the Wehnelt electrode and the anode, a plurality of electrically insulating members each holding a respective rod, and a metal disc to which the insulating members are fastened in a manner to insulate each rod from the disc and from the other rods, the disc is made in the form of a circular ring provided with a central opening and at least six additional openings disposed around the central opening, the insulating members are tubular members each having a central bore and each projecting from both sides of the disc, and each rod is inserted in the bore of a respective insulating member, and extends at least partially through, and is fastened to, its respective insulating member.
Inventors
- 👤 Erwin Goll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:43
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/02; H01J23/06; H01J23/065
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
157 words
In an electron beam generating system including a cathode, a Wehnelt electrode, an anode, three groups of at least two electrically conductive rods, the rods of each group being connected to a respective one of the cathode, the Wehnelt electrode and the anode, a plurality of electrically insulating members each holding a respective rod, and a metal disc to which the insulating members are fastened in a manner to insulate each rod from the disc and from the other rods, the improvement wherein: said disc is in the form of a circular ring provided with a central opening and at least six additional openings disposed around the central opening; said insulating members are tubular members each having a central bore and each projecting from both sides of said disc; and each said rod is inserted in the bore of a respective insulating member, and extends at least partially through, and is fastened to, its respective insulating member.
Claim 2
Dependent Claim
157 words
In an electron beam generating system including a cathode, a Wehnelt electrode, an anode, three groups of at least two electrically conductive rods, the rods of each group being connected to a respective one of the cathode, the Wehnelt electrode and the anode, a plurality of electrically insulating members each holding a respective rod, and a metal disc to which the insulating members are fastened in a manner to insulate each rod from the disc and from the other rods, the improvement wherein: said disc is in the form of a circular ring provided with a central opening and at least six additional openings disposed around the central opening; said insulating members are tubular members each having a central bore and each projecting from both sides of said disc; and each said rod is inserted in the bore of a respective insulating member, and extends at least partially through, and is fastened to, its respective insulating member.
Claim 3
Dependent Claim
27 words
An arrangement as defined in claim 1 wherein said tubular insulating members are made of a ceramic material and are fastened to said metal disc by soldering.
Claim 4
Dependent Claim
28 words
An arrangement as defined in claim 1 further comprising a plurality of annular metal caps each fastening a respective one of said rods to its associated insulating member.
Claim 5
Dependent Claim
24 words
An arrangement as defined in claim 1 wherein each said insulating member has a length substantially greater than the thickness of said metal disc.
Claim 6
Dependent Claim
27 words
An arrangement as defined in claim 1 wherein said conductive rods are arranged to extend parallel to the axis of the electron beam generated by said system.
Claim 7
Dependent Claim
35 words
An arrangement as defined in claim 1 wherein said system is constructed in a manner such that the center of gravity of said metal disc approximately coincides with that of said electron beam generating system.
Claim 8
Dependent Claim
26 words
An arrangement as defined in claim 1 wherein said metal disc is arranged to hold said system within a vacuum envelope of an electron beam tube.
Claim 9
Dependent Claim
45 words
An arrangement as defined in claim 1 wherein each said group of rods is constituted by three rods, and there are nine of said additional openings distributed around said metal disc to be symmetrical with the axis of the electron beam generated by said system.
Claim 10
Dependent Claim
22 words
An arrangement as defined in claim 1 wherein each said rod is fastened to only one end of its respective insulating member.
Claim 11
Dependent Claim
32 words
An arrangement as defined in claim 1 wherein said metal disc is provided with further openings which facilitate evacuation of gas from an envelope in which said system is to be housed.
Claim 12
Dependent Claim
16 words
An arrangement as defined in claim 1 wherein said system is part of a microwave tube.
References Cited (Backward Citations)
US2567893A
Cited
US2957999A
Cited
US2991391A
Cited
US2958800A
Cited
US3214625A
Cited
US3227913A
Cited
US3567988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |