IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0552525
(2009-09-02)
|
등록번호 |
US-8146999
(2012-04-03)
|
발명자
/ 주소 |
- Ferguson, Keith Michael
- Pinkal, Donald R.
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
16 |
초록
▼
An aircraft seat has an adjustable armrest in which the armrest platform is supported by a hinged attachment to an armrest support member. The hinged attachment between the armrest platform and the arm support member is located at the wrist-end of the arm support member near the aircraft control sti
An aircraft seat has an adjustable armrest in which the armrest platform is supported by a hinged attachment to an armrest support member. The hinged attachment between the armrest platform and the arm support member is located at the wrist-end of the arm support member near the aircraft control stick. The armrest platform and the armrest support are locked into position by means of telescoping struts that are controlled at the wrist-end of the arm platform member. The telescoping struts can be selectively locked to create triangular and/or quadrilateral trusses that lock the armrest firmly into position and may include springs or other elements to bias the armrest platform up and forward so that the armrest “floats” when the telescoping struts re released.
대표청구항
▼
1. A seat comprising: a seat frame having a seat back portion and a seat pan portion,an arm support member, said arm support member having a hinged end and a free end, the hinged end of said arm support member being pivotably mounted to said seat frame;an arm platform member, said arm platform membe
1. A seat comprising: a seat frame having a seat back portion and a seat pan portion,an arm support member, said arm support member having a hinged end and a free end, the hinged end of said arm support member being pivotably mounted to said seat frame;an arm platform member, said arm platform member having a hinged end and a free end, the hinged end of said arm platform member being pivotably mounted to the free end of said arm support member;a first telescoping strut, said first telescoping strut having a hinged end and a free end, the hinged end of said first telescoping strut being pivotably mounted to said seat frame, the free end of said first telescoping strut slidably engaging said arm platform member proximal the free end of said arm support member, said frame, said first telescoping strut, said arm platform member and said arm support member forming a quadrilateral linkage;a second telescoping strut, said second telescoping strut having a hinged end and a free end, the hinged end of said second telescoping strut being pivotably mounted to said arm support member, the free end of said second telescoping strut slidably engaging the arm platform member proximal the free end of said arm support member said second telescoping strut, said arm platform member and said arm support member forming a triangular linkage; anda locking mechanism for selectively engaging said first and second telescoping struts to prevent sliding engagement between said first and second telescoping struts and said arm platform member. 2. The seat of claim 1, wherein: the hinged end of said arm support member is proximal the seat back portion such that said arm support member extends away from the seat back; andsaid arm platform member extends from the free end of said arm support member toward the seat back portion. 3. The seat of claim 1, wherein: the quadrilateral linkage has no linkages having lines of action that remain parallel throughout the range of motion. 4. The seat of claim 1, wherein: the hinged end of said first telescoping strut is pivotably mounted to said frame proximal the hinged end of said arm support member. 5. The seat of claim 4, wherein: the hinged end of said first telescoping strut is pivotably mounted to said frame within 2 to 6 inches of the hinged end of said arm support member. 6. The seat of claim 1, wherein: the hinged end of said arm support member is attached to said frame proximal the seat back portion. 7. The seat of claim 1, wherein: said locking mechanism located at the free end of arm support. 8. The seat of claim 1, wherein, the hinged end of said arm support member and the hinged end of said arm platform member pivot about substantially parallel, horizontal axes. 9. The seat of claim 1, wherein, the free end of said first telescoping strut comprises a threaded rod member; and wherein said locking mechanism comprises a barrel nut operatively attached to said arm platform member, said barrel nut having an oblong hole formed therein, the oblong hole having a plurality of helical threads formed along a portion of an interior wall thereof, said barrel nut moveable from a first position in which said helical threads engage said threaded rod member to prevent relative motion between said threaded rod member and said barrel nut to a second position in which the plurality of helical threads disengage said threaded rod member to permit said threaded rod member to slide through said barrel nut. 10. The seat of claim 9, wherein, said barrel nut further comprises a smooth surface formed along a portion of the interior wall opposite the plurality of helical threads, wherein the smooth side of the interior wall contacts said threaded rod member when said barrel nut is in the second position. 11. The seat of claim 9, wherein: said barrel nut is pivotably mounted in a bushing to rotate about an axis normal to the oblong hole. 12. A seat comprising: a seat frame having a seat back portion and a seat pan portion,an arm support member, said arm support member having a hinged end and a free end, the hinged end of said arm support member being pivotably mounted to said seat frame;an arm platform member, said arm platform member having a hinged end and a free end, the hinged end of said arm platform member being pivotably mounted to the free end of said arm support member;a first telescoping strut, said first telescoping strut operatively attached between said seat frame and the free end of said arm platform member so that said frame, said first telescoping strut, said arm platform member and said arm support member form a quadrilateral linkage;a second telescoping strut operatively attached between said arm support member and the free end of said arm platform member so that said second telescoping strut, said arm support member and said arm platform member form a triangular linkage;a locking mechanism moveable between a first position in which said first and second telescoping struts are free to telescope thereby allowing said arm support member and said arm platform member to pivot about their fixed ends, and a second position in which said first and second telescoping struts are locked in a rigid configuration, thereby preventing said arm support member and said arm platform member from pivoting about their fixed ends. 13. The seat of claim 12, wherein: said first and second telescoping struts each telescope relative to said arm platform member by slidably engaging one of a plurality of pilot sleeves mounted to said arm platform member to form a sliding engagement. 14. The seat of claim 13, wherein: the sliding engagement comprises a threaded rod member formed at a free end of each of said first and second telescoping struts, wherein said locking mechanism comprises first and second-a barrel nuts operatively attached to said arm platform member, said first and second barrel nuts each having an oblong hole formed therein, the oblong hole having a plurality of helical threads formed along a portion of an interior wall thereof, said first and second barrel nuts being moveable from a first locked position in which said helical threads engage said threaded rod members to prevent relative motion between said threaded rod member and said first and second barrel nuts to a second unlocked position in which the plurality of helical threads disengage said threaded rod members to permit said threaded rod members to slide through said first and second barrel nuts. 15. The seat of claim 14, further comprising: a locking plunger for moving said first and second barrel nuts in unison from their respective locked to unlocked positions. 16. The seat of claim 14, wherein: said first and second barrel nuts are mounted to said plurality of pilot sleeves. 17. The seat of claim 12, wherein: said frame, said first telescoping strut, said arm platform member and said arm support member each comprise a link of said quadrilateral linkage, each of said links having a longitudinal axis defined by a point of attachment at each end therefore, wherein no longitudinal axes remain parallel. 18. A latch mechanism comprising: first and second sliding linkages, each of said first and second sliding linkages having a free end, the free ends of said first and second sliding linkages each comprising a threaded rod member;first and second barrel nuts, each of said first and second barrel nuts having a hole formed therein having a longitudinal axis and an oblong cross section, the hole further comprising a plurality of helical threads formed along a portion of an interior wall, said first and second barrel nuts being moveable along an axis transverse to the longitudinal axis of the hole from a first locked position in which the helical threads simultaneously engage the threaded rod members of said first and second sliding linkages to a second unlocked position in which the plurality of helical threads disengage the threaded the threaded rod members of said first and second sliding linkages to permit said threaded rod members to slide through said first and second barrel nuts. 19. The latch mechanism of claim 18, wherein: said first and second barrel nuts are pivotably mounted for pivoting independently about the transverse axis. 20. The latch mechanism of claim 19, further comprising: a locking plunger for simultaneously moving said first and second barrel nuts from said locked position to said unlocked position.
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