US3582529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron beam heating apparatus and control system therein
Assignee: Airco Inc
•
Filing: 1969-09-24
•
Granted: 1971-06-01
•
Expires: 1989-09-24
Abstract
Abstract Electron beam heating apparatus is described in which the electron beam is deflected to a series of impact positions on a target surface. Signals for operating deflecting fields are produced by signal-generating means having provision for adjusting the duration at which the signal is at any given level. The energy applied to the target surface by the beam at any of the plurality of impact positions is thereby controllable by controlling the length of the time during which the beam is directed at each position.
Inventors
- 👤 Emmett R Anderson
- 👤 Kurt D Kennedy
- 👤 Sherman Tsou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:16
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/16; C22B9/22; C22B9/228; H; H01; H01J; H01J37/00; H01J37/30; H01J37/302; H01J37/3023
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
129 words
A control system for use with electron beam heating apparatus for heating a target surface, comprising, signal-generating means for producing at least one electrical signal of varying amplitude to cause the heating apparatus to sweep the electron beam over the target surface, said electrical signal having a plurality of discrete levels representative of a corresponding plurality of beam impact positions on the target surface, said signalgenerating means including control means for controlling the time interval for which said signal is at any of said discrete levels, whereby the energy applied to the target surface by the beam at any of the plurality of beam impact positions during a beam sweep is controllable in accordance with the length of the time during which the beam is directed at such position.
Claim 2
Dependent Claim
129 words
A control system for use with electron beam heating apparatus for heating a target surface, comprising, signal-generating means for producing at least one electrical signal of varying amplitude to cause the heating apparatus to sweep the electron beam over the target surface, said electrical signal having a plurality of discrete levels representative of a corresponding plurality of beam impact positions on the target surface, said signalgenerating means including control means for controlling the time interval for which said signal is at any of said discrete levels, whereby the energy applied to the target surface by the beam at any of the plurality of beam impact positions during a beam sweep is controllable in accordance with the length of the time during which the beam is directed at such position.
Claim 3
Dependent Claim
45 words
A system according to claim 1 wherein said signal generating means comprise a pair of signal generators generating respective coordinate signals, wherein each signal has a plurality of discrete levels, and wherein said control means are capable of varying the time intervals for both signals.
Claim 4
Dependent Claim
40 words
A system according to claim 2 wherein said signal-generating means comprise a plurality of pulse circuits operable sequentially to cause said signal generators to change the amplitude of said signal sequentially from one of said discrete levels to the next.
Claim 5
Dependent Claim
32 words
A system according to claim 1 wherein said signal-generating means include a ring counter comprising a series of one-shot multivibrator stages, each having means for varying the duration of its output pulse.
Claim 6
Dependent Claim
81 words
A system according to claim 1 wherein said signal-generating means comprise, a pair of signal generators for generating respective deflection signals, each signal generator having a separate stage for generating one of a series of discrete levels comprising the output wave form of each said signal generator, a plurality of pulse circuits operable sequentially to activate in succession the stages of each of said signal generators, and wherein said control means comprise an RC circuit in each of said pulse circuits.
Claim 7
Dependent Claim
27 words
A system according to claim 5 wherein said signal-generating means further include a dual channel drive amplifier having its respective channels connected to said signal generators, respectively.
Claim 8
Dependent Claim
144 words
Electron beam heating apparatus for heating a target surface, comprising, means for producing an electron beam, deflection means for deflecting the electron beam over the target surface, signal-generating means for producing at least one electrical signal of varying amplitude to cause the deflection system to sweep the electron beam over the target surface in a predetermined pattern, said electrical signals having a plurality of discrete levels representative of a corresponding plurality of beam impact positions on the target surface, said signal-generating means including control means for controlling the time interval for which said signal is at any of said discrete levels, whereby the energy applied to the target surface by the beam at any of the plurality of beam impact positions during a beam sweep is controllable in accordance with the length of the time during which the beam is directed at such position.
Claim 9
Dependent Claim
144 words
Electron beam heating apparatus for heating a target surface, comprising, means for producing an electron beam, deflection means for deflecting the electron beam over the target surface, signal-generating means for producing at least one electrical signal of varying amplitude to cause the deflection system to sweep the electron beam over the target surface in a predetermined pattern, said electrical signals having a plurality of discrete levels representative of a corresponding plurality of beam impact positions on the target surface, said signal-generating means including control means for controlling the time interval for which said signal is at any of said discrete levels, whereby the energy applied to the target surface by the beam at any of the plurality of beam impact positions during a beam sweep is controllable in accordance with the length of the time during which the beam is directed at such position.
Claim 10
Dependent Claim
136 words
Electron beam heating apparatus for heating a target surface, comprising, means for producing an electron beam, x- and y-axes deflection means for deflecting the electron beam in mutually perpendicular axes, a pair of signal generators, each connected to a respective one of said deflecting means for producing an electrical signal of varying amplitude to cause said deflecting means to sweep the electron beam in its associated axis, said electrical signals produced by said signal generators each having a plurality of discrete levels representative of a corresponding displacement in the x- or y-axis, and pulse means connected to said signal generators and operable sequentially to cause said signal generators to change the amplitude of the signal produced thereby sequentially from one of said discrete levels to the next for deflecting the beam in a predetermined sweep pattern.
Claim 11
Dependent Claim
136 words
Electron beam heating apparatus for heating a target surface, comprising, means for producing an electron beam, x- and y-axes deflection means for deflecting the electron beam in mutually perpendicular axes, a pair of signal generators, each connected to a respective one of said deflecting means for producing an electrical signal of varying amplitude to cause said deflecting means to sweep the electron beam in its associated axis, said electrical signals produced by said signal generators each having a plurality of discrete levels representative of a corresponding displacement in the x- or y-axis, and pulse means connected to said signal generators and operable sequentially to cause said signal generators to change the amplitude of the signal produced thereby sequentially from one of said discrete levels to the next for deflecting the beam in a predetermined sweep pattern.
References Cited (Backward Citations)
US3390222A
Cited
US3446934A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |