GB712758A - Speed control for rotary fluid-operated motors - Google Patents
Speed control for rotary fluid-operated motorsInfo
- Publication number
- GB712758A GB712758A GB1477451A GB1477451A GB712758A GB 712758 A GB712758 A GB 712758A GB 1477451 A GB1477451 A GB 1477451A GB 1477451 A GB1477451 A GB 1477451A GB 712758 A GB712758 A GB 712758A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluid
- control
- turbine
- speed
- pressure
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
- A61C1/0007—Control devices or systems
- A61C1/0038—Pneumatic systems
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Hydraulic Motors (AREA)
Abstract
712,758. Fluid-pressure servomotor-control systems. NILES-BEMENT-POND CO. June 21, 1951, No. 14774/51. Class 135 A speed control for a rotary fluid-operated motor, e.g. a turbine, comprises a valve closure member 14 operable in a casing 18 to control the supply of motive fluid from a source 12 to a conduit 15 leading to the turbine 10, by a piston 26 acted on by pressure fluid against a spring 22. The pressure fluid is also supplied from the source through an adjustable needle valve 34 to a conduit 30 from which fluid leaks via a nozzle 32 under the control of flaps 38 formed on a member 36 driven by the turbine. The flaps move radially under centrifugal force to control the pressure on piston 26 and hence maintain the turbine at a constant speed. The controlled speed may be preset by adjustment of vave 34 which may be equipped with a dial and pointer calibrated in terms of speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1477451A GB712758A (en) | 1951-06-21 | 1951-06-21 | Speed control for rotary fluid-operated motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1477451A GB712758A (en) | 1951-06-21 | 1951-06-21 | Speed control for rotary fluid-operated motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB712758A true GB712758A (en) | 1954-07-28 |
Family
ID=10047248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1477451A Expired GB712758A (en) | 1951-06-21 | 1951-06-21 | Speed control for rotary fluid-operated motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB712758A (en) |
-
1951
- 1951-06-21 GB GB1477451A patent/GB712758A/en not_active Expired
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