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41. 发明专利

NZ749455A Bistable pitch propeller system with bidirectional propeller rotation 未知
公开(公告)号：NZ749455A
公开(公告)日：2020-07-31
申请号：NZ74945517
申请日：2017-03-13
申请人： KITTY HAWK CORP
发明人： REICHERT TODD , VANDER LIND DAMON
IPC分类号： B64C11/30 , B64C11/06 , B64C11/18 , B64C11/32 , B64C11/34 , B64C11/40 , B64C11/42 , B64C11/44 , B64C11/46 , B64C27/08 , B64C27/46 , B64C27/80 , B64C29/02
摘要： Disclosed is a rotor where the angle of attack or pitch can be changed between hovering and forward flight by a simpler, cheaper or lighter mechanism. A propeller includes a blade free to rotate. A first stop is positioned to mechanically engage one or both of a first portion of the blade and a first structure coupled to the blade when the blade is in a first position at a first end of the rotational range of motion. A second stop is positioned to mechanically engage one or both of a second portion, of the blade and a second structure coupled to the blade when the blade is in a second position at a second end of the defined rotational range. The blade rotates to the first position against the first stop when the propeller is rotated in a first direction and to the second position against the second stop when the propeller is rotated in a second direction. The first position is associated with hovering and the second position is associated with forward flight.

42. 发明专利

GB2567976A Device for supplying and distributing fluid 未知
公开(公告)号：GB2567976A
公开(公告)日：2019-05-01
申请号：GB201900500
申请日：2013-12-04
申请人： SNECMA
发明人： OLIVIER BELMONTE , AUGUSTIN CURLIER , MATHIEU PERRIER
IPC分类号： B64C11/38 , B64C11/42
摘要： A device 18 is intended to supply fluid to a rotating linear displacement actuator capable of controlling the pitch of the blades of a propeller. The device is located between a rotary power assembly and the actuator, along a longitudinal axis A and is connected in rotation therewith. The device comprises means 20 for supplying fluid interacting with said power assembly and defining as many supplies as there are operating states of the actuator and also a fluid distributor 21 to which said supplies are connected. The fluid distributor has separate channels for transporting the fluid in the direction of the actuator according to the operating states by means of tubular equipment 25 connected to the distributor.

43. 发明专利

CA2303922A1 VARIABLE PITCH MARINE PROPELLER 未知
公开(公告)号：CA2303922A1
公开(公告)日：1999-04-22
申请号：CA2303922
申请日：1998-10-09
申请人： ELLIOTT MORRIS C
发明人： ELLIOTT MORRIS C
IPC分类号： B63H3/08 , F03D7/02 , B64C11/42
摘要： A modular variable-pitch marine propeller system (10) has a propeller unit(16) for mounting on a drive shaft (20), and a power unit (14) including a stationary annular hydraulic cylinder (32) for operating the propeller unit, a hydraulic remote control unit (18) being fluid-coupled to the power unit. An annular piston (34) of the hydraulic cylinder is coupled to a ring-shaped actuator yoke (40) by a roller thrust bearing (44), the actuator yoke axially displacing a ring-shaped rack member (70) of the propeller unit (16) with which the actuator yoke (40) is allowed to rotate. The ring-shaped rack member(70) carries a plurality of rack sections (72) by which it engages the pinions(66) mounted on the stem portions (68) of each blade member (64). The piston(34) operates in a sealed environment for the exclusion of water from the separately sealed surfaces of the cylinder itself. In one configuration, the propeller unit is replaceable without disturbing the sealed environment of the annular piston. The control unit includes a hydraulic control cylinder (90) that is operated by a rotatably mounted barrel (96) that engages a threaded piston rod (94). Alternatively, the control cylinder is actuated by a lever(120) having biasing springs (128) and an adjustable brake (136).

44. 发明专利

DE69107430D1 未知
公开(公告)号：DE69107430D1
公开(公告)日：1995-03-23
申请号：DE69107430
申请日：1991-12-20
申请人： HONDA MOTOR CO LTD
发明人： KOMURA TAKASHI , BANNAI TAKESHI
IPC分类号： B63H3/02 , B64C11/30 , B64C11/42
摘要： A variable-pitch mechanism, for use in an airplane, a ship, or the like, for adjusting the pitch of a plurality of blades (8) of a propeller (4) in which attachment shafts (9) of a plurality of radial blades of a propeller are rotatably mounted on a tubular hub (3) which can be driven by a drive shaft (1), and eccentric pins (16) projecting from ends of the attachment shafts are held in an annular groove (15) defined in the outer periphery of an adjusting ring (14) which is disposed concentrically in the hub and axially movable. The attachment shafts can be turned about their own axes through the eccentric pins in response to axial displacement of the adjusting ring for adjusting the pitch of the propeller blades.

45. 发明专利

SE451826B 未知
公开(公告)号：SE451826B
公开(公告)日：1987-11-02
申请号：SE8403411
申请日：1984-06-27
申请人： UNITED TECHNOLOGIES CORP
发明人： DUCHESNEAU J G , SCHWARTZ R A
IPC分类号： B64C11/38 , B64C11/40 , B64C11/42 , B64C11/30
摘要： In a propeller pitch control system, a selector 10 isolates engine (42) speed control in one of two engine governor (175 and 300) systems. The selector is input with fluid pressure signals from a pair of pilot valves (215 and 325), each operated by a corresponding one of the governors. The selector passes the signal of lowest magnitude to an actuator 40 which sets blade pitch in accordance with the magnitude of the signal whereby the governor providing such signal (through its associated pilot valve) controls engine speed independently of the other governor.

46. 发明专利

IT1176351B 未知
公开(公告)号：IT1176351B
公开(公告)日：1987-08-18
申请号：IT2165784
申请日：1984-06-29
申请人： UNITED TECHNOLOGIES CORP
发明人： DUCHESNEAU JEROME GERARD , SCHWARTZ ROBERT ALLAN
IPC分类号： B64C11/38 , B64C11/40 , B64C11/42 , G05B
摘要： In a propeller pitch control system, a selector 10 isolates engine (42) speed control in one of two engine governor (175 and 300) systems. The selector is input with fluid pressure signals from a pair of pilot valves (215 and 325), each operated by a corresponding one of the governors. The selector passes the signal of lowest magnitude to an actuator 40 which sets blade pitch in accordance with the magnitude of the signal whereby the governor providing such signal (through its associated pilot valve) controls engine speed independently of the other governor.

47. 发明专利

ES8503599A1 PERFECCIONAMIENTOS EN LOS DISPOSITIVOS DE CONTROL DE PASO PARA HELICES ACCIONADAS POR MOTOR 未知
公开(公告)号：ES8503599A1
公开(公告)日：1985-03-16
申请号：ES533290
申请日：1984-06-09
申请人： UNITED TECHNOLOGIES CORP
IPC分类号： B64C11/38 , B64C11/40 , B64C11/42
摘要： PERFECCIONAMIENTOS EN LOS DISPOSITIVOS DE CONTROL DE PASO PARA HELICES ACCIONADAS POR MOTOR.CONSTAN DE PRIMEROS ELEMENTOS (215) PARA APLICAR UNA PRIMERA SEN/AL DE CONTROL INDICATIVA DE UNA FIJACION DE PASO DESEADA PARA EL ACTUADOR (40); UN GOBERNADOR (175) DE VELOCIDAD DE MOTOR; SEGUNDOS ELEMENTOS (325) PARA APLICAR UNA SEGUNDA SEN/AL DE CONTROL INDICATIVA DE UNA FIJACION DE PASO DESEADA PARA EL ACTUADOR; UN GOBERNADOR DE SOBREVELOCIDAD (300); Y ELEMENTOS DE CONTROL (10) CONECTADOS A LOS PRIMEROS (215) Y SEGUNDOS (325) ELEMENTOS DE APLICACION DE SEN/AL DE CONTROL Y QUE RESPONDEN A LAS PRIMERA Y SEGUNDA SEN/ALES DE CONTROL, PARA AISLARLAS UNA DE OTRA Y HACER PASAR UNA SOLA DE LAS SEN/ALES DE CONTROL AL ACTUADOR EN RESPUESTA A LA MAGNITUD RELATIVA DE LAS SEN/ALES DE CONTROL.

48. 发明专利

GB2133088A APPARATUS FOR THE CONTROL OF AN ARIEL PROPELLER 未知
公开(公告)号：GB2133088A
公开(公告)日：1984-07-18
申请号：GB8400069
申请日：1984-01-04
申请人： SHORT BROTHERS LTD
发明人： FINNIGAN HENRY WILFRED
IPC分类号： B63H3/10 , B64C11/38 , B64C11/40 , B64C11/42 , F02D29/00 , F02D29/02 , B64C11/30

49. 发明专利

CS148102B1 未知
公开(公告)号：CS148102B1
公开(公告)日：1973-02-22
申请号：CS604570
申请日：1970-09-03
IPC分类号： B64C11/42

50. 发明专利

GB868419A Hydraulic system for adjustable pitch aeronautical propeller 未知
公开(公告)号：GB868419A
公开(公告)日：1961-05-17
申请号：GB3901457
申请日：1957-12-16
申请人： UNITED AIRCRAFT CORP
IPC分类号： B64C11/34 , B64C11/42
摘要： 868,419. Variable pitch propellers. UNITED AIRCRAFT CORPORATION. Dec. 16, 1957 [Dec. 18,1956], No. 39014/57. Class 114. Variable-pitch propellers are adjusted by an hydraulic motor fed with fluid under the action of a control valve, normally adjusted by a speed governor driven from the engine, and a feathering valve. The housing 14 contains the hydraulic motor which varies the pitch of the blades 12 through suitable cam and gear mechanism. The feathering valve 32 when in its " closed position (as shown) allows communication between the fluid supply source fed to conduit 28 and conduit 28a, which leads to control valve 34, and also connects conduits 26a, 26 and 30a, 30, conduit 26 feeding fluid to the hydraulic motor to decrease the pitch and conduit 30 supplying fluid to increase the pitch. The control valve 34 when in its " central " position (as shown) terminates the flow through conduit 28a from the supply source and this valve is moved by a governor 48, driven from gearing 42, against the action of spring 52 to connect conduits 28a, 30a to provide fluid to the hydraulic motor to increase the pitch, and when the spring loading is sufficient to overcome the governor action conduit 28a communicates with conduit 26a to decrease the pitch. The supply of hydraulic fluid is provided by a main pump 62 and a standby pump 64 which deliver fluid from a tank 56 supplied by pumps 58 from a tank 54. The main pump 62 delivers fluid past filter 66 and conduit 22 to the conduit 28 which is provided with a branch conduit 94 leading to a normally closed valve 92. The standby pump 64 delivers past filter 68 to a conduit 70 which communicates when valve 32 is " closed " with a conduit 70a leading to a spring loaded valve 72 having a small orifice 88, the main delivery flows through conduit 78 to a drain conduit 80 communicating with the tank 56 while part of the flow passes through the orifice 88 to conduit 82 which communicates through passage 84 of control valve 34, when in its " central " position, with conduit 86 which leads to the drain conduit 80. When control valve 34 is moved to vary the pitch it closes conduit 82 and the pressure in this conduit increases to the value existing in conduit 70a thus allowing valve 72 to close under the influence of its spring, thus the pressure in conduit 70 increases and opens a non-return valve 74 thus permitting the delivery from standby pump 64 to join the delivery from the main pump 62 whenever the pitch is changed. Similarly, when the feathering valve 32 is " opened " conduit 70 is closed and the two deliveries combine as above. Specifications 683,906, 724,284 and 824,078 are referred to.

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