GB1341558A - - Google Patents
Info
- Publication number
- GB1341558A GB1341558A GB1341558DA GB1341558A GB 1341558 A GB1341558 A GB 1341558A GB 1341558D A GB1341558D A GB 1341558DA GB 1341558 A GB1341558 A GB 1341558A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- bag
- vacuum pump
- end piece
- flap valve
- 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
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B33/00—Pumps actuated by muscle power, e.g. for inflating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vacuum Packaging (AREA)
Abstract
1341558 Vacuum pump N D McCULLOCH 21 June 1971 [22 July 1970] 35479/70 Heading F1N A vacuum pump for evacuating produce containing bags comprises inner and outer telescoped cylinders 2, 3 closed by valved end pieces 5, 9 to define a pumping chamber 14 therebetween. In use a bag is sealingly held around the outer cylinder 2 whereafter partial withdrawal of the cylinder 3 draws air from the bag through a perforation in a further end piece 4 and the valve in the end piece 5 into the chamber 14. Air sucked into the chamber 14 is prevented from reentering the bag during the return stroke by the flap valve 7, a flap valve 9 allowing exhaustion of the chamber.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3547970 | 1970-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1341558A true GB1341558A (en) | 1973-12-25 |
Family
ID=10378191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1341558D Expired GB1341558A (en) | 1970-07-22 | 1970-07-22 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1341558A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4627796A (en) * | 1983-11-16 | 1986-12-09 | Moore Gary R | Air removing apparatus |
| US4799863A (en) * | 1985-07-03 | 1989-01-24 | Fgl Projects Limited | Vacuum flow device |
| GB2220231A (en) * | 1988-06-30 | 1990-01-04 | Street Enterprises Inc E | Vacuum pump for beverage container |
| EP0608469A1 (en) * | 1993-01-26 | 1994-08-03 | Nihon Seiki Co. Ltd. | Manually operated reciprocating suction pump |
-
1970
- 1970-07-22 GB GB1341558D patent/GB1341558A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4627796A (en) * | 1983-11-16 | 1986-12-09 | Moore Gary R | Air removing apparatus |
| US4799863A (en) * | 1985-07-03 | 1989-01-24 | Fgl Projects Limited | Vacuum flow device |
| GB2220231A (en) * | 1988-06-30 | 1990-01-04 | Street Enterprises Inc E | Vacuum pump for beverage container |
| GB2220231B (en) * | 1988-06-30 | 1993-02-10 | Street Enterprises Inc E | Vacuum pump for beverage container |
| EP0608469A1 (en) * | 1993-01-26 | 1994-08-03 | Nihon Seiki Co. Ltd. | Manually operated reciprocating suction pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |