GB1289635A - - Google Patents
Info
- Publication number
- GB1289635A GB1289635A GB1289635DA GB1289635A GB 1289635 A GB1289635 A GB 1289635A GB 1289635D A GB1289635D A GB 1289635DA GB 1289635 A GB1289635 A GB 1289635A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- passage
- slots
- air
- rotor
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D44/00—Other cosmetic or toiletry articles, e.g. for hairdressers' rooms
- A45D44/12—Ear, face, or lip protectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B25/00—Regulating, controlling, or safety means
- F01B25/02—Regulating or controlling by varying working-fluid admission or exhaust, e.g. by varying pressure or quantity
- F01B25/14—Regulating or controlling by varying working-fluid admission or exhaust, e.g. by varying pressure or quantity peculiar to particular kinds of machines or engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C20/00—Control of, monitoring of, or safety arrangements for, machines or engines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
1289635 Rotary positive-displacement machines FRIED KRUPP GmbH 22 Jan 1970 [23 Jan 1969] 3211/70 Heading F1F A hand-held pneumatic-motor for a grinding wheel includes a vaned rotor 12 attached to an output shaft 29 and supported by fixed discs 21, 22 at the ends of a cylindrical housing 11 that is furnished with two sets of air-inlet slots 10, 16 and a single set of air-outlet slots 26. Initially, compressed air is supplied solely to the slots 10 through an inlet 1<SP>1</SP>, a passage 2 whose outlet end is controlled by a centrifugal governor 4, a chamber 9 and a passage 23. When the rotor speed diminishes as a consequence of an increasing load on the shaft 29 the governor operates so as to reduce its throttling effect on the air entering the chamber 9. The consequential pressure-rise in said chamber moves a stepped piston 14 so as to allow additional air to enter a working chamber 24 by way of a passage 15 and the slots 16, and thereby augment the torque produced by the rotor. The piston 14 renders the passage 15 closed until the pressure in the chamber 9 reaches a predetermined value.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691903157 DE1903157A1 (en) | 1969-01-23 | 1969-01-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1289635A true GB1289635A (en) | 1972-09-20 |
Family
ID=5723126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1289635D Expired GB1289635A (en) | 1969-01-23 | 1970-01-22 |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE1903157A1 (en) |
FR (1) | FR2028964A1 (en) |
GB (1) | GB1289635A (en) |
NL (1) | NL7000524A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2242708A (en) * | 1990-04-04 | 1991-10-09 | Pierburg Gmbh | Sliding-vane or swing-vane vacuum pump |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3967673A (en) * | 1974-12-11 | 1976-07-06 | United States Steel Corporation | Continuous-casting mold with minimal thermal restraint and method of making |
-
1969
- 1969-01-23 DE DE19691903157 patent/DE1903157A1/de not_active Withdrawn
-
1970
- 1970-01-14 NL NL7000524A patent/NL7000524A/xx unknown
- 1970-01-22 GB GB1289635D patent/GB1289635A/en not_active Expired
- 1970-01-22 FR FR7002255A patent/FR2028964A1/fr not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2242708A (en) * | 1990-04-04 | 1991-10-09 | Pierburg Gmbh | Sliding-vane or swing-vane vacuum pump |
GB2242708B (en) * | 1990-04-04 | 1993-11-17 | Pierburg Gmbh | Vane-cell or swing-vane vacuum pump |
Also Published As
Publication number | Publication date |
---|---|
NL7000524A (en) | 1970-07-27 |
FR2028964A1 (en) | 1970-10-16 |
DE1903157A1 (en) | 1970-10-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |