GB776336A - Improvements in pumping apparatus for evacuated envelopes - Google Patents
Improvements in pumping apparatus for evacuated envelopesInfo
- Publication number
- GB776336A GB776336A GB29352/55A GB2935255A GB776336A GB 776336 A GB776336 A GB 776336A GB 29352/55 A GB29352/55 A GB 29352/55A GB 2935255 A GB2935255 A GB 2935255A GB 776336 A GB776336 A GB 776336A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- shelf
- sleeve
- cold trap
- oct
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F9/00—Diffusion pumps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/38—Exhausting, degassing, filling, or cleaning vessels
- H01J9/385—Exhausting vessels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
776,336. High vacuum pumps. MACHLETT LABORATORIES, Inc. Oct. 14, 1955 [Oct. 26, 1954], No. 29352/55. Class 71 A conventional high vacuum pump 11 of the oil diffusion type, a cold trap 30 and a rigid tube 20 connected to the exhaust tubulation 21 of an envelope 10 to be evacuated mounted on a shelf 16 of a. frame 12 are resiliently mounted as a unit below said envelope 10, so as to be capable of linear movement relatively thereto, there by taking up expansion of the tubulation 21 and allowing sealing thereof without displacement of the envelope. To this end the pump 11 and cold trap 30 are carried by brackets 33, 34 secured to a sleeve 24 telescoping on a vertical shaft 25 secured to the floor 14 and a shelf 15 of the frame 12; the sleeve 24 having arms 42 provided with spools 40 Fig. 3 (not shown) round which are wound spring strips 26 by which the unit is suspended from the shelf 15. The sleeve 24 may also carry a vacuum gauge and a Dewar flask supporting ring beneath the cold trap 30.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US776336XA | 1954-10-26 | 1954-10-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB776336A true GB776336A (en) | 1957-06-05 |
Family
ID=22139201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29352/55A Expired GB776336A (en) | 1954-10-26 | 1955-10-14 | Improvements in pumping apparatus for evacuated envelopes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB776336A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2714210A1 (en) * | 1993-12-22 | 1995-06-23 | Futaba Denshi Kogyo Kk | Vacuum system for display, with sequential evacuating and sealing of display envelope |
-
1955
- 1955-10-14 GB GB29352/55A patent/GB776336A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2714210A1 (en) * | 1993-12-22 | 1995-06-23 | Futaba Denshi Kogyo Kk | Vacuum system for display, with sequential evacuating and sealing of display envelope |
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