GB636402A - Improvements in or relating to stop devices for controllable pitch propellers - Google Patents
Improvements in or relating to stop devices for controllable pitch propellersInfo
- Publication number
- GB636402A GB636402A GB5973/47A GB597347A GB636402A GB 636402 A GB636402 A GB 636402A GB 5973/47 A GB5973/47 A GB 5973/47A GB 597347 A GB597347 A GB 597347A GB 636402 A GB636402 A GB 636402A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stops
- sleeve
- pitch
- moved
- relating
- 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
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/30—Blade pitch-changing mechanisms
- B64C11/38—Blade pitch-changing mechanisms fluid, e.g. hydraulic
- B64C11/385—Blade pitch-changing mechanisms fluid, e.g. hydraulic comprising feathering, braking or stopping systems
Abstract
636,402. Variable pitch propellers. UNITED AIRCRAFT CORPORATION. March 3, 1947, No. 5973. Convention date, April 17, 1946. [Class 114] A pitch stop device for a hydraulically operated propeller is moved to its inactive position hydraulically. The pitch - changing piston 32 carries with it the sleeve 66 until its surface 94 engages the stops 68. To proceed past this limiting position hydraulic fluid at higher pressure than the normal operating pressure is led through the line 46 to unseat valve 100 and thus to move piston 90 to the right. A wedge block 84 is thus moved from between the stop hooks, and these are then pressed inward by the surface 94. The operative position of the stops is adjusted by screwing sleeve 38 into or out of the sleeve 70. In modifications the stops are attached to and adjusted relative to the dome 36 or the stops engage the sleeve 38 on its movement to the left. Specifications 505,077, 505,168, 505,169, 514,725 and 607,856 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US636402XA | 1946-04-17 | 1946-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB636402A true GB636402A (en) | 1950-04-26 |
Family
ID=22050541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5973/47A Expired GB636402A (en) | 1946-04-17 | 1947-03-03 | Improvements in or relating to stop devices for controllable pitch propellers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB636402A (en) |
-
1947
- 1947-03-03 GB GB5973/47A patent/GB636402A/en not_active Expired
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