IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0461144
(2003-06-13)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
Akin Gump Strauss Hauer &
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인용정보 |
피인용 횟수 :
9 인용 특허 :
5 |
초록
A hand control mechanism to produce a selectively changeable effect on a continuously variable input shaft is disclosed. The mechanism selectively varies the length of a lever arm to effect a change in the amount of rotation of a continuously variable input shaft of a machine.
대표청구항
▼
The invention claimed is: 1. A control mechanism to produce a selectively changeable effect on a continuously variable input shaft, the input shaft forming part of another mechanism which is supported by a support structure, the control mechanism being operable by hand, the control mechanism compri
The invention claimed is: 1. A control mechanism to produce a selectively changeable effect on a continuously variable input shaft, the input shaft forming part of another mechanism which is supported by a support structure, the control mechanism being operable by hand, the control mechanism comprising: a first link having a first end and a remote second end, said first link affixed at said first end thereof to said input shaft such that said first link may be rotated in a first plane about a first pivot point, causing a corresponding rotation of said input shaft; a slide bar having a first end and a second remote end, said slide bar affixed at said first end thereof to said support structure for pivotable movement generally in said first plane about a second pivot point; an adjustment member attached to said slide bar for selectable and slidable movement therealong between said first and second ends of said slide bar; a second rigid link having a first end and a remote second end, said second link pivotably affixed, about a third pivot point, at the first end thereof to said second end of said first link; said second rigid link pivotably affixed about a fourth pivot point at the second end thereof to said adjustment member; a manually-engagable handle affixed to said adjustment member, whereby movement of said handle also moves said adjustment member generally in said first plane; the relationship among the first, second, third and fourth pivot points such that movement of said handle in said first plane causes said adjustment member and second link to move in said first plane and rotate said first link and input shaft a first distance, and substantially the same movement of said handle after relocation of said adjustment member to a different position along said slide bar results in rotation of said first link and input shaft a second distance, different from said first distance. 2. The control mechanism of claim 1, wherein the second end of said second rigid link may be moved along the slide bar toward and away from the second pivot point such that the relative movement between the slide bar and the second end of the first link may be selectively altered. 3. The control mechanism of claim 2, wherein said input shaft controls the speed of a drive wheel of a walk-behind landscaping machine. 4. The control mechanism of claim 3, wherein said slide bar is a rod. 5. The control mechanism of claim 3, wherein said adjustment member may be adjustably affixed to said slide bar at any location along a length of said slide bar. 6. A self-propelled landscaping machine having a support frame with generally rearwardly extending handlebars and at least one pair of drive wheels, a ground-engaging implement; an engine mounted on said support frame, a hydrostatic transmission receiving input from said engine and providing output to said drive wheels and said implement, said transmission having a continuously variable input shaft for controlling the direction and speed of at least said drive wheels, a control mechanism for said transmission comprising: a first link having a first end and a remote second end, said first link affixed at said first end thereof to said input shaft such that said first link may be rotated in a first plane about a first pivot point, causing a corresponding rotation of said input shaft; a slide bar having a first end and a second remote end, said slide bar affixed at said first end thereof to one of said handlebars for pivotable movement generally in said first plane about a second pivot point; an adjustment member attached to said slide bar for selectable and slidable movement therealong between said first and second ends of said slide bar; a second rigid link having a first end and a remote second end, said second link pivotably affixed, about a third pivot point, at the first end thereof to said second end of said first link; said second rigid link pivotably affixed about a fourth pivot point at the second end thereof to said adjustment member; a manually-engagable handle affixed to said adjustment member, whereby movement of said handle also moves said adjustment member generally in said first plane; the relationship among the first, second, third and fourth pivot points such that movement of said handle in said first plane causes said adjustment member and second link to move in said first plane and rotate said first link and input shaft a first distance, and substantially the same of said handle after relocation of said adjustment member to a different position along said slide bar results in rotation of said first link and input shaft a second distance, different from said first distance. 7. The self-propelled landscaping machine of claim 6 wherein said first link, and thus said input shaft, are movable between locations of activation corresponding to reverse, neutral, forward and transport. 8. The self-propelled landscaping machine of claim 7, wherein the second end of said second rigid link may be moved along the slide bar toward and away from the second pivot point such that the relative movement between the slide bar and the second end of the first link may be selectively altered. 9. The self-propelled landscaping machine of claim 8, wherein said input shaft controls the speed of a drive wheel of the landscaping machine said landscaping machine being a walk-behind landscaping machine. 10. The self-propelled landscaping machine of claim 9, wherein said slide bar is a rod. 11. The self-propelled landscaping machine of claim 10, wherein said adjustment member may be adjustably affixed to said slide bar at any location along the effective length of said slide bar. 12. The self-propelled landscaping machine of claim 10, wherein said ground-engaging implement is a generally vertical cutting blade and said landscaping machine is an edge-shaper. 13. A self-propelled edge-shaper having a support frame with generally rearwardly extending handlebars and at least one pair of drive wheels, a ground-engaging implement; said implement being a cutting blade an engine mounted on said support frame, a hydrostatic transmission receiving input from said engine and providing output to said drive wheels and said cutting blade, said transmission having a continuously variable input shaft for controlling the direction and speed of at least said drive wheels, a control mechanism for said transmission, comprising: a first link having a first end and a remote second end, said first link affixed at said first end thereof to said input shaft such that said first link may be rotated in a first plane about a first pivot point, causing a corresponding rotation of said input shaft; a slide bar having a first end and a second remote end, said slide bar affixed at said first end thereof to one of said handlebars for pivotable movement generally in said first plane about a second pivot point; an adjustment member attached to said slide bar for selectable and slidable movement therealong between said first and second ends of said slide bar; a second rigid link having a first end and a remote second end, said second link pivotably affixed, about a third pivot point, at the first end thereof to said second end of said first link; said second rigid link pivotably affixed about a fourth pivot point at the second end thereof to said adjustment member; a manually-engagable handle affixed to said adjustment member, whereby movement of said handle also moves said adjustment member generally in said first plane; the relationship among the first, second, third and fourth pivot points such that movement of said handle in said first plane causes said adjustment member and second link to move in said first plane and rotate said first link and input shaft a first distance, and substantially the same movement of said handle after relocation of said adjustment member to a different position along said slide bar results in rotation of said first link and input shaft a second distance, different from said first distance. 14. The self-propelled edge-shaper of claim 13 wherein said first link and thus said input shaft are movable between locations of activation to actuate a hydrostatic pump to reverse, neutral, forward and transport modes. 15. The self-propelled edge-shaper of claim 14, wherein the second end of said second rigid link may be moved along the slide bar toward and away from the second pivot point such that relative movement between the slide bar and the second end of the first link may be selectively altered. 16. The self-propelled edge-shaper of claim 15, wherein said slide bar is a rod. 17. The self-propelled edge-shaper of claim 16, wherein said adjustment member may be adjustably affixed to said slide bar at any location along the effective length of said slide bar. 18. The self-propelled edge-shaper of claim 17, wherein said cutting blade is generally vertical and cupped.
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