US3859072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating cataphoretic lasers
Assignee: Metrologic Instruments Inc
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Filing: 1973-08-23
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Granted: 1975-01-07
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Expires: 1993-08-23
Abstract
Abstract Two central bore assemblies are constructed, each including a ceramic tube having a plurality of drilled disc assemblies frictionally attached thereon. A cathode element is inserted in the central portion of an outer envelope, as are the two gridbore assemblies. The inner portion of the envelope is maintained in a partial vacuum, and heat is applied to the exterior, thereby shrinking the envelope over the grid-bore assemblies. A taut tungsten wire is inserted through the bore, and the envelope in the region of each of the disc assemblies is heated successively, from one side to the other. This achieves precise alignment of the central bore throughout the laser. Anode elements are inserted at either end, and mirrors are attached. After preliminary adjustment, the mirrors are fine-tuned by means of application of a narrow band of heat on the mirror neck, as slight transverse forces are applied to the sides of the mirrors.
Inventors
- 👤 James R Fendley
- 👤 Carl Harry Knowles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:34
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/04; C03B23/07; C03B23/073; C03B23/076; H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/031; H01S3/034; H01S3/036; H01S3/038; H01S3/05; H01S3/08; H01S3/086; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49758; Y10T29/49764; Y10T29/49778
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
100 words
A method of fabricating laser apparatus comprising the steps of: a. assembling a structure having a central bore tube located on the axis of an outer envelope tube by means of a plurality of baffle assemblies; b. shrinking said envelope tube over said baffle assemblies by application a pressure differential and of heat; c. mounting said structure on a taut wire which is relatively impervious to heat; d. successively heating said structure in the regions of said baffle assemblies from one end of said structure to the other end thereof; and e. installing mirrors at opposite ends of said structure.
Claim 2
Independent Claim
100 words
A method of fabricating laser apparatus comprising the steps of: a. assembling a structure having a central bore tube located on the axis of an outer envelope tube by means of a plurality of baffle assemblies; b. shrinking said envelope tube over said baffle assemblies by application a pressure differential and of heat; c. mounting said structure on a taut wire which is relatively impervious to heat; d. successively heating said structure in the regions of said baffle assemblies from one end of said structure to the other end thereof; and e. installing mirrors at opposite ends of said structure.
Claim 3
Dependent Claim
35 words
A method as described in claim 1 wherein said mounting step includes installing said structure on lathe means by means of a spring loaded tungsten wire affixed through the bore of said central bore tube.
Claim 4
Dependent Claim
32 words
A method as described in claim 1 wherein said step of successively heating includes moving the position of said taut wire while heat is applied to the central region of said structure.
Claim 5
Dependent Claim
61 words
A method as described in claim 3 wherein said assembling step includes inserting two central bore tubes on the axis of said envelope tube, the juncture of said two bore tubes being in the central region of said structure, said moving step occurring as heat is applied to said structure in the region of the juncture of said two bore tubes.
Claim 6
Dependent Claim
27 words
A method as described in claim 3 wherein said moving step includes paddling said envelope tube in the central region of said structure with a carbon paddle.
Claim 7
Dependent Claim
77 words
A method as described in claim 1 wherein said installing step includes the steps of a. sealing said mirrors at opposite ends of said structure approximately perpendicularly to said central bore tube; b. heating a relatively narrow portion of said envelope tube in the region of one of said mirrors; and c. applying sufficient transverse force to said one of said mirrors to produce precision alignment of said one of said mirrors with said central bore tube.
Claim 8
Dependent Claim
77 words
A method as described in claim 1 wherein said installing step includes the steps of a. sealing said mirrors at opposite ends of said structure approximately perpendicularly to said central bore tube; b. heating a relatively narrow portion of said envelope tube in the region of both of said mirrors; and c. applying sufficient transverse force to said both of said mirrors to produce precision alignment of said both of said mirrors with said central bore tube.
Claim 9
Dependent Claim
39 words
A method as described in claim 1 wherein said assembling step includes insertion of a cathode electrode in the central region of said structure, and said installing step includes insertion of anode electrodes at opposite ends of said structure.
Claim 10
Independent Claim
210 words
A method of fabricating a cataphoretic laser comprising the steps of: a. assembling a structure including an outer envelope tube, a cathode electrode in the central region of said envelope tube, two central bore tubes on the axis of said envelope tube, and a plurality of baffle assemblies comprising perforated discs arranged between said central bore tube and said outer envelope tube; b. mounting said structure on a glass working lathe by means of a taut tungsten wire drawn through said central bore tubes; c. establishing in the interior of said envelope tube a partial vacuum; d. shrinking said envelope tube over said baffle assemblies by application of heat; e. successively reheating said structure in the regions of said baffle assemblies from one end of said structure to the other; f. paddling said structure in the central region thereof as heat is applied thereto; g. removing said taut wire; h. installing anode electrodes at both ends of said structure; i. installing mirrors at both extremities of said envelope tube; j. reheating a relatively narrow portion of said envelope tube in the region of at least one of said mirrors; and k. applying sufficient transverse force to said one of said mirrors to produce lasing action when said electrodes are energized.
Claim 11
Independent Claim
210 words
A method of fabricating a cataphoretic laser comprising the steps of: a. assembling a structure including an outer envelope tube, a cathode electrode in the central region of said envelope tube, two central bore tubes on the axis of said envelope tube, and a plurality of baffle assemblies comprising perforated discs arranged between said central bore tube and said outer envelope tube; b. mounting said structure on a glass working lathe by means of a taut tungsten wire drawn through said central bore tubes; c. establishing in the interior of said envelope tube a partial vacuum; d. shrinking said envelope tube over said baffle assemblies by application of heat; e. successively reheating said structure in the regions of said baffle assemblies from one end of said structure to the other; f. paddling said structure in the central region thereof as heat is applied thereto; g. removing said taut wire; h. installing anode electrodes at both ends of said structure; i. installing mirrors at both extremities of said envelope tube; j. reheating a relatively narrow portion of said envelope tube in the region of at least one of said mirrors; and k. applying sufficient transverse force to said one of said mirrors to produce lasing action when said electrodes are energized.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |