Coupling assembly for a three point hitch assembly
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A01B-059/06
A01B-059/00
A01B-059/043
출원번호
US-0171680
(2005-06-30)
등록번호
US-7461702
(2008-12-09)
발명자
/ 주소
Farnsworth,Fred L.
Farnsworth,Jason R.
출원인 / 주소
Farnsworth,Fred L.
Farnsworth,Jason R.
대리인 / 주소
Saitta,Thomas C.
인용정보
피인용 횟수 :
5인용 특허 :
14
초록▼
A coupling assembly for use with a tractor having a three point mounting hitch assembly having two extension legs telescopically retained by two generally vertical sleeve members slanted towards each other and two lateral extension arms telescopically retained by a cross sleeve member, wherein the l
A coupling assembly for use with a tractor having a three point mounting hitch assembly having two extension legs telescopically retained by two generally vertical sleeve members slanted towards each other and two lateral extension arms telescopically retained by a cross sleeve member, wherein the lateral extension arms can be extended or retracted and wherein the extension legs can be extended or retracted to alter the relative positions of an upper hook and two lower hooks.
대표청구항▼
We claim: 1. A coupling assembly for connecting an implement to a three point mounting hitch assembly on a tractor, the implement comprising a mounting frame having an upper pin and two lower pins, said coupling assembly comprising: an upper hook to receive and retain the upper pin of an implement,
We claim: 1. A coupling assembly for connecting an implement to a three point mounting hitch assembly on a tractor, the implement comprising a mounting frame having an upper pin and two lower pins, said coupling assembly comprising: an upper hook to receive and retain the upper pin of an implement, said upper hook mounted on a generally horizontal assembly comprising lateral extension arms; two lower hooks to receive and retain the lower pins of an implement, and extension legs mounted to said lateral extension arms; means to simultaneously extend and retract said lateral extension arms such that the horizontal spread distance between said lower hooks may be increased or decreased; means to independently extend and retract said extension legs, such that the vertical spread distance between said upper hook and said two lower hooks may be increased or decreased. 2. The assembly of claim 1, further comprising an upper arm assembly comprising means to extend or shorten said upper arm assembly. 3. The assembly of claim 2, wherein said means to extend or shorten said upper arm assembly comprises a hydraulic cylinder. 4. The assembly of claim 3, further comprising a cross sleeve member retaining said lateral extension arms in a telescoping manner, wherein said upper arm assembly is joined to said cross sleeve member and said upper hook is joined to said upper arm assembly. 5. The assembly of claim 1, further comprising two vertical sleeve members retaining said extension legs in a telescoping manner, said vertical sleeve members joined to said lateral extension arms. 6. The assembly of claim 5, wherein said means to extend and retract said extension legs comprise two electrical actuators. 7. The assembly of claim 1, further comprising a cross sleeve member retaining said lateral extension arms in a telescoping manner. 8. The assembly of claim 7, wherein said means to simultaneously extend and retract said lateral extension arms comprises an electrical actuator operating a dual piston cylinder. 9. The assembly of claim 1, wherein said extension legs are non-parallel to each other. 10. A coupling assembly to connect an implement to a three point mounting hitch on a tractor, the tractor three point mounting hitch assembly comprising an upper arm mounting means and two lower arm assemblies each having a lower hitch arm, said coupling assembly comprising: an upper hook and two lower hooks, said lower hooks disposed on two extension legs telescopically retained by two vertical sleeve members; two lateral extension arms telescopically retained by a cross sleeve member, said vertical sleeve members mounted to said lateral extension arms and said upper hook mounted to said cross sleeve member; means to simultaneously extend and retract said lateral extension arms, such that the distance between said lower hooks may be increased or decreased; means to independently extend and retract said extension legs, such that the vertical distance between the upper hook and the lower hooks may be increased or decreased. 11. The assembly of claim 10, further comprising an upper arm assembly connected to said cross sleeve member, said upper arm assembly comprising means to extend or shorten said upper arm assembly. 12. The assembly of claim 11, wherein said upper arm assembly is adapted to connect to a mounting bracket on a tractor, and wherein said extension legs further comprise mounting brackets to receive lower hitch arms of a tractor. 13. The assembly of claim 10, wherein said means to simultaneously extend and retract said lateral extension arms and said means to independently extend and retract said extension legs comprise electrical actuators. 14. The assembly of claim 11, wherein said means to extend or shorten said upper arm assembly comprises a hydraulic cylinder. 15. The assembly of claim 10, wherein said vertical sleeve members are non-parallel to each other, such that the vertical sleeve members slant towards each other at their upper ends. 16. The assembly of claim 15, wherein said vertical sleeve members are slanted at an angle of approximately 10 to 15 degrees from vertical. 17. A coupling assembly in combination with a tractor having a three point mounting hitch comprising an upper arm mounting means and two lower arm assemblies each having a lower hitch arm, said coupling assembly adapted to temporarily retain an implement comprising a mounting frame having an upper pin and two lower pins, said coupling assembly comprising: an upper hook to receive and retain the upper pin of an implement; two lower hooks to receive and retain the lower pins of an implement, said lower hooks disposed on two extension legs telescopically retained by two vertical sleeve members, wherein said vertical sleeve members are slanted towards each other, and wherein said extension legs are connected to said tractor lower hitch arms; two lateral extension arms telescopically retained by a cross sleeve member, wherein said lateral extension arms extend and retract in opposite directions from said cross sleeve member and wherein said vertical sleeve members are mounted to said lateral extension arms and said upper hook is mounted to said cross sleeve member; an upper arm assembly connected to said cross sleeve member and to said tractor upper arm mounting means, said upper arm assembly comprising means to extend or shorten said upper arm assembly; means to simultaneously extend and retract said lateral extension arms relative to said cross sleeve member, such that the distance between said vertical sleeve members, said vertical leg extensions, lower hooks may be increased or decreased; means to independently extend and retract said extension legs relative to said vertical sleeve members, such that the vertical distance between the upper hook and the lower hooks may be increased or decreased. 18. The assembly of claim 17, wherein said means to simultaneously extend and retract said lateral extension arms and said means to independently extend and retract said extension legs comprise electrical actuators, and wherein means to extend or shorten said upper arm assembly comprises a hydraulic cylinder. 19. The assembly of claim 17, further comprising means to lock in a particular position said means to simultaneously extend and retract said lateral extension arms, said means to independently extend and retract said extension legs comprise electrical actuators, and said means to extend or shorten said upper arm assembly comprises a hydraulic cylinder. 20. The assembly of claim 17, wherein said vertical sleeve members are slanted towards each other at an angle of approximately 10 to 15 degrees from vertical.
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이 특허에 인용된 특허 (14)
Blessent ; John B., Agricultural tillage equipment.
Bernhardt,Gerd; Fedotov,Sergiy; Rudik,Ruslan, Implement attachment interface for the coupling of operating implements to a utility vehicle and valve arrangement.
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