FR1587546A - - Google Patents

Info

Publication number: FR1587546A
Authority: FR; France
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

Application number

Priority date (The priority date 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 date listed.)

1967-10-12

Filing date

1968-10-11

Publication date

1970-03-20

1968-10-11 Application filed filed Critical

1970-03-20 Application granted granted Critical

1970-03-20 Publication of FR1587546A publication Critical patent/FR1587546A/fr

Status Expired legal-status Critical Current

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/32—Rotors
- B64C27/46—Blades
- B64C27/473—Constructional features
- B64C27/50—Blades foldable to facilitate stowage of aircraft

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Aviation & Aerospace Engineering (AREA)
Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Air Bags (AREA)
Transmission Devices (AREA)

FR1587546D 1967-10-12 1968-10-11 Expired FR1587546A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US67488267A	1967-10-12	1967-10-12

Publications (1)

Publication Number	Publication Date
FR1587546A true FR1587546A (fr)	1970-03-20

Family

ID=24708265

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR1587546D Expired FR1587546A (fr)	1967-10-12	1968-10-11

Country Status (4)

Country	Link
US (1)	US3484175A (fr)
DE (1)	DE1781313A1 (fr)
FR (1)	FR1587546A (fr)
GB (1)	GB1230010A (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3743441A (en) *	1971-11-02	1973-07-03	United Aircraft Corp	Helicopter blade folding and locking mechanism
US3874817A (en) *	1973-11-01	1975-04-01	United Aircraft Corp	Apparatus for folding blades without changing pitch due to folding
US4738592A (en) *	1984-09-28	1988-04-19	The Boeing Company	Cam assisted blade folding system
US5246188A (en) *	1989-09-14	1993-09-21	Koutsoupidis Theodore K	Wing turbines in conjuction with propulsion systems for aircraft and helicopters
US5211538A (en) *	1991-11-27	1993-05-18	Bell Helicopter Textron Inc.	Method for folding helicopter main rotor blades
GB9204305D0 (en) *	1992-02-28	1992-04-08	Hamble Aerostructures	Locking device
US8919692B2 (en)	2009-04-28	2014-12-30	Sikorsky Aircraft Corporation	Proximity sensor valve and lock system using same
FR2991292B1 (fr) *	2012-06-04	2014-05-23	Etienne Jean Rampal	Dispositif pour repliage automatique des pales sur les rotors de giravions ou aeronefs de tout type
FR3010046B1 (fr) *	2013-08-28	2015-09-18	Eurocopter France	Dispositif de repliage de pale, pale et aeronef
US10858094B2 (en)	2018-07-09	2020-12-08	Bell Helicopter Textron Inc.	Method of blade fold for tiltrotor aircraft
CN109677600A (zh) *	2018-08-16	2019-04-26	深圳市格上格创新科技有限公司	一种可收缩无人机旋翼防护装置及无人机
CN111806680B (zh) *	2020-06-19	2023-09-12	中国科学院地理科学与资源研究所	无人机复飞装置及无人机
CN111806682B (zh) *	2020-06-19	2023-10-03	中国科学院地理科学与资源研究所	无人机复飞方法
CN112591083B (zh) *	2020-12-25	2023-02-28	中国直升机设计研究所	一种桨叶折叠收藏整流结构
CN114313250A (zh) *	2022-01-04	2022-04-12	广东汇天航空航天科技有限公司	折叠装置、螺旋桨、旋翼模组及飞行设备

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2738146A (en) *	1953-02-19	1956-03-13	Nicholas J Medvedeff	Convertiplane
US2925130A (en) *	1954-10-01	1960-02-16	United Aircraft Corp	Means of folding rotor blades
GB852841A (en) *	1957-12-10	1960-11-02	Westland Aircraft Ltd	Improvements in or relating to rotary wing aircraft
US3097701A (en) *	1960-10-27	1963-07-16	United Aircraft Corp	Blade folding mechanism
US3153455A (en) *	1962-10-15	1964-10-20	Boeing Co	Folding mechanism
US3185408A (en) *	1963-07-17	1965-05-25	Boeing Co	Aircraft propulsion system
US3247907A (en) *	1963-09-18	1966-04-26	Boeing Co	Blade folding mechanism for rotary wing aircraft
US3187818A (en) *	1964-12-31	1965-06-08	Boeing Co	Blade folding mechanism

1967
- 1967-10-12 US US674882A patent/US3484175A/en not_active Expired - Lifetime
1968
- 1968-09-20 GB GB1230010D patent/GB1230010A/en not_active Expired
- 1968-09-26 DE DE19681781313 patent/DE1781313A1/de active Pending
- 1968-10-11 FR FR1587546D patent/FR1587546A/fr not_active Expired

Also Published As

Publication number	Publication date
DE1781313A1 (de)	1971-03-04
US3484175A (en)	1969-12-16
GB1230010A (fr)	1971-04-28

Publication	Publication Date	Title
AU425114B2 (fr)	1972-06-14
AU416737B2 (fr)	1971-09-03
AU2277767A (fr)	1968-12-12
AU342066A (fr)	1968-09-19
AU610966A (fr)	1968-11-28
AU2977667A (fr)	1969-05-22
AU2256867A (fr)	1968-12-05
AU3189468A (fr)	1969-07-10
AU1273466A (fr)	1969-04-24
AU2116667A (fr)	1969-04-03
AU2454867A (fr)	1969-01-16
AU3151267A (fr)	1968-01-08
AU2528767A (fr)	1970-01-08
BE692778A (fr)	1967-07-03
BE509738A (fr)
AU25066A (fr)	1968-07-11
BE692552A (fr)	1967-07-13
AU1763766A (fr)	1968-08-15
AU34866A (fr)	1968-07-04
AU408412B2 (fr)	1970-11-23
AU1677166A (fr)	1968-07-25
BE477645A (fr)
AU459699A (fr)	1975-04-10
AU97666A (fr)	1968-08-01
BE692492A (fr)	1967-06-16

Legal Events

Date	Code	Title	Description
1976-12-10	ST	Notification of lapse