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Class Information
Number: 416/153
Name: Fluid reaction surfaces (i.e., impellers) > Having positive means for impeller adjustment > Having pitch lock or adjustable stop
Description: Apparatus wherein the apparatus includes means for retaining the impeller or working member in a selected position of adjustment.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7448855 |
Droop stop mechanism for helicopter rotor blade |
Nov. 11, 2008 |
| 7357686 |
Boat propeller with adjustable blades for adjusting the pitch thereof |
Apr. 15, 2008 |
| 7334994 |
Automatic self-feathering and resetting sail restraint for migler's vertical axis wind turbine |
Feb. 26, 2008 |
| 7261517 |
Device for adjusting a rotor blade of a wind energy turbine |
Aug. 28, 2007 |
| 7179054 |
Flow reversal system for axial fan |
Feb. 20, 2007 |
| 6872045 |
Apparatus and method for fluid drive conversion |
Mar. 29, 2005 |
| 6692231 |
Molded fan having repositionable blades |
Feb. 17, 2004 |
| 6666649 |
Helicopter individual blade control system |
Dec. 23, 2003 |
| 6461212 |
Automatic start control and clutch of toy engine powered by high pressure gas |
Oct. 8, 2002 |
| 6428274 |
Drive mechanism for adjusting the rotor blades of wind power installations |
Aug. 6, 2002 |
| 6364610 |
Manually adjustable variable-pitch boat propeller |
Apr. 2, 2002 |
| 6312223 |
Marine propeller |
Nov. 6, 2001 |
| 6170779 |
Rotor pitch lock for rotary/wing aircraft |
Jan. 9, 2001 |
| 6077040 |
Control system for blades for a variable pitch propeller |
Jun. 20, 2000 |
| 6065934 |
Shape memory rotary actuator |
May. 23, 2000 |
| 6059528 |
Electronic propeller control system |
May. 9, 2000 |
| 6056609 |
Adjustable-pitch propeller, especially for sport boats |
May. 2, 2000 |
| 5997253 |
Adjustable pitch propeller |
Dec. 7, 1999 |
| 5951252 |
Helicopter flap lock assembly |
Sep. 14, 1999 |
| 5810561 |
Variable pitch propeller apparatus |
Sep. 22, 1998 |
| 5595474 |
Pitch variation control device for the blades of a turbomachine rotor and method of operating the device |
Jan. 21, 1997 |
| 5527153 |
Variable pitch propeller |
Jun. 18, 1996 |
| 5527154 |
Variable pitch boat prop |
Jun. 18, 1996 |
| 5498135 |
Actuator for a variable pitch propeller |
Mar. 12, 1996 |
| 5452988 |
Blade pitch change mechanism |
Sep. 26, 1995 |
| 5242265 |
Aircraft pitch change mechanism |
Sep. 7, 1993 |
| 5232345 |
Feathering propeller with a manually adjustable pitch |
Aug. 3, 1993 |
| 5199850 |
Pitch stop assembly for variable pitch propulsor |
Apr. 6, 1993 |
| 5031858 |
Apparatus and method for folding and locking rotor blades |
Jul. 16, 1991 |
| 5022820 |
Variable pitch propeller |
Jun. 11, 1991 |
| 5005357 |
Oscillating force turbine |
Apr. 9, 1991 |
| 4948337 |
Aircraft engine propulsor blade pitch sensing |
Aug. 14, 1990 |
| 4890979 |
No-back apparatus for propeller pitch control |
Jan. 2, 1990 |
| 4753572 |
Propeller pitch change actuation system |
Jun. 28, 1988 |
| 4533296 |
Pitch control system for variable pitch propeller |
Aug. 6, 1985 |
| 4346305 |
Governor for fluid current motor |
Aug. 24, 1982 |
| 4289970 |
Wind powered electrical generator |
Sep. 15, 1981 |
| 3994128 |
Dual output variable pitch turbofan actuation system |
Nov. 30, 1976 |
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