IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0973043
(1978-12-12)
|
발명자
/ 주소 |
- Stedman Robert N. (Chillicothe IL)
|
출원인 / 주소 |
- Caterpillar Tractor Co. (Peoria IL 02)
|
인용정보 |
피인용 횟수 :
16 인용 특허 :
2 |
초록
▼
A work vehicle (10) such as, for example, a tractor (74) or loader (27) has a center of gravity (12), a body (14) and first and second continuous track assemblies ( 18,20). In the use of the tractor (74), for example, forwardly locating the center of gravity (12) can increase penetration of a bulldo
A work vehicle (10) such as, for example, a tractor (74) or loader (27) has a center of gravity (12), a body (14) and first and second continuous track assemblies ( 18,20). In the use of the tractor (74), for example, forwardly locating the center of gravity (12) can increase penetration of a bulldozer (76) on the tractor (74) during bulldozing operations. During ripping operations, penetration of a ripper (78) on the tractor (74) can be increased by rearwardly locating the center of gravity (12). Apparatus (22) is provided for controllably moving the body (14) relative to both of the track assemblies ( 18,20). Said apparatus (22) thus controllably shifts the center of gravity (12) of the tractor (74) relative to both of said track assemblies ( 18,20) for selectively increasing penetration of the ripper (78) or bulldozer (76) depending upon the operation being performed by said tractor (74).
대표청구항
▼
In a work vehicle (10) having a center of gravity (12), a body (14) and a lower portion (16) having first and second continuous track assemblies (18,20), said first and second track assemblies (18,20) each having a track frame (19,21) having first and second end portions (92,93;94,95), the improveme
In a work vehicle (10) having a center of gravity (12), a body (14) and a lower portion (16) having first and second continuous track assemblies (18,20), said first and second track assemblies (18,20) each having a track frame (19,21) having first and second end portions (92,93;94,95), the improvement comprising: said lower portion (16) having a subframe (102), said subframe (102) having first and second end portions (108,110) and being movably connected to said track frames (19,21) at locations sufficient for positioning said track assemblies (18,20) one relative to the other; a plurality of links (122,122′,124,124′) each having first and second end portions (126,130;126′,130′;128,132′,128′,132′), each of said first end portions (126,126′,128,128′) being pivotally connected to said body (14), each of said second end portions (130,130′,132,132′) being pivotally connected to said lower portion (16); and power means (125) for pivotally moving said body (14) relative to both of the track assemblies (18,20) for selectively, controllably shifting the center of gravity (12).
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