IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0378266
(2003-03-03)
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우선권정보 |
JP-0201751 (2002-07-10) |
발명자
/ 주소 |
- Samejima, Kazuo
- Chujo, Kenichi
- Shimamura, Teruo
- Esaki, Yoshiyuki
- Yamaguchi, Masatoshi
- Kawahara, Yoshihiro
|
출원인 / 주소 |
|
대리인 / 주소 |
Webb Ziesenheim Logsdon Orkin &
|
인용정보 |
피인용 횟수 :
27 인용 특허 :
7 |
초록
▼
A mid-mount mower including a body frame supported above the ground by front wheels and rear wheels, and a mower unit vertically movably suspended from the body frame between the front wheels and rear wheels. The mower unit includes a mower deck having a top board, and a front wall, side walls and a
A mid-mount mower including a body frame supported above the ground by front wheels and rear wheels, and a mower unit vertically movably suspended from the body frame between the front wheels and rear wheels. The mower unit includes a mower deck having a top board, and a front wall, side walls and a rear wall depending from the top board. The mower deck has a rearwardly opening recess formed in a sideways middle region at a rear end thereof. A mower input shaft is disposed on the top board for transmitting power to the rotary blades juxtaposed inside the mower deck to be rotatable about three vertical axes arranged sideways. The mower input shaft extends longitudinally of the body frame and has a rear connecting end. A PTO shaft is provided in a rear transmission mechanism that drives the rear wheels. The PTO shaft extends longitudinally of the body frame and has a forward connecting end. A relay transmission shaft has one end thereof connected to the connecting end of the mower input shaft through a front universal joint, and the other end connected to the PTO shaft through a rear universal joint. The recess is recessed longitudinally of the body frame to an extent forwardly of the rear universal joint to receive the rear universal joint when the mower unit is raised.
대표청구항
▼
1. A mid-mount mower comprising:a body frame supported above the ground by front wheels and rear wheels; a mower unit vertically movably suspended from said body frame between said front wheels and said rear wheels, said mower unit including: a mower deck having a top board, and a front wall, side w
1. A mid-mount mower comprising:a body frame supported above the ground by front wheels and rear wheels; a mower unit vertically movably suspended from said body frame between said front wheels and said rear wheels, said mower unit including: a mower deck having a top board, and a front wall, side walls and a rear wall depending from said top board; rotary blades juxtaposed inside said mower deck to be rotatable about three vertical axes arranged sideways; and a mower input shaft disposed on said top board for transmitting power to said rotary blades, said mower input shall extending longitudinally of the mower and having a rear connecting end; a rear transmission mechanism for driving said rear wheels; a PTO shaft provided in said rear transmission mechanism, said PTO shaft extending longitudinally of the mower and having a forward connecting end; and a relay transmission shaft having one end thereof connected to the rear connecting end of said mower input shaft through a front universal joint, and the other end connected to the forward connecting end of said PTO shaft through a rear universal joint; wherein said mower deck has a recess formed in a sideways middle region at a rear end thereof, said recess opening rearward in a longitudinal direction of the mower in plan view, to receive said rear universal joint when said mower unit is raised. 2. A mid-mount mower as defined in claim 1, wherein said mower deck comprises a flat deck, with an upper surface of said top board having a substantially uniform height above the ground.3. A mid-mount mower as defined in claim 1, wherein said body frame includes a front frame pair extending substantially horizontally, and a rear frame pair extending rearward and downward from said front frame pair, said rear transmission mechanism being supported by said rear frame pair, said recess having an opening width larger than a width of said rear frame pair.4. A mid-mount mower as defined in claim 3, wherein said PTO shaft is disposed at a lower level than axles of said rear wheels.5. A mid-mount mower as defined in claim 3, wherein said mower deck comprises a flat deck, with an upper surface of said top board having a substantially uniform height above the ground.6. A mid-mount mower comprising:a front wheel unit; a rear wheel unit having a rear axle; a body frame supported above the ground by said front wheel unit and said rear wheel unit; a mower unit vertically movably suspended from said body frame between said front wheel unit and said rear wheel unit, said mower unit including: a mower deck having a top board, and a front wall, side walls and a rear wall depending from said top board; a plurality of rotary blades juxtaposed inside said mower deck to be rotatable about respective vertical axes arranged sideways; and a mower input shaft disposed on said top board for transmitting power to said rotary blades; a rear transmission mechanism for driving said rear axle; a PTO shaft provided in said rear transmission mechanism; and a relay shaft extending longitudinally of the mower for transmitting the power from said PTO shaft to said mower input shaft, said relay shaft having at a front end thereof a front universal joint connected to said mower input shaft, said relay shaft further having at a rear end thereof a rear universal joint connected to said PTO shaft; wherein said mower deck has a recess formed in a sideways middle region at a rear end thereof, said recess opening rearward in a longitudinal direction of the mower to avoid an interference between said mower deck and said rear universal joint when said mower unit is raised; and wherein said PTO shaft and said rear universal joint are disposed at a lower level than said rear axle, said relay shaft being inclined upward to said front universal joint when said mower unit is raised. 7. A mid-mount mower as defined in claim 6, wherein said front universal joint is positioned at a higher level than said rear axle when said mower unit is raised.8. A mid-mount mower as defined in claim 6, wherein said mower deck comprises a flat deck, with an upper surface of said top board having a substantially uniform height above the ground.9. A mid-mount mower as defined in claim 6, wherein said body frame includes a front frame pair extending substantially horizontally, and a rear frame pair extending rearward and downward from said front frame pair, said rear transmission mechanism being supported by said rear frame pair, said recess having an opening width larger than a width of said rear frame pair.10. A mid-mount mower comprising:a front wheel unit; a rear wheel unit having a rear axle; a body frame supported above the ground by said front wheel unit and said rear wheel unit; a mower unit vertically movably suspended from said body frame between said front wheel unit and said rear wheel unit, said mower unit including: a mower deck having a top board, and a front wall, side walls and a rear wall depending from said top board; a plurality of rotary blades juxtaposed inside said mower deck to be rotatable about respective vertical axes arranged sideways; and a mower input shaft disposed on said top board for transmitting power to said rotary blades; a rear transmission mechanism for driving said rear axle; a PTO shaft provided in said rear transmission mechanism; and a relay shaft extending longitudinally of the mower for transmitting the power from said PTO shaft to said mower input shaft, said relay shaft having at a front end thereof a front universal joint connected to said mower input shaft, said relay shaft further having at a rear end thereof a rear universal joint connected to said PTO shaft; wherein said mower deck comprises a flat deck, with an upper surface of said top board having a substantially uniform height above the ground; and wherein said mower deck has a recess formed in a sideways middle region at a rear end thereof, said recess opening rearward in a longitudinal direction of the mower to avoid an interference between said mower deck and said rear universal joint when said mower unit is raised. 11. A mid-mount mower as defined in claim 10, wherein said PTO shaft and said rear universal joint are disposed at a lower level than said rear axle, said relay shaft being inclined upward to said front universal joint when said mower unit is raised.12. A mid-mount mower as defined in claim 11, wherein said front universal joint is positioned at a higher level than said rear axle when said mower unit is raised.13. A mid-mount mower as defined in claim 10, wherein said body frame includes a front frame pair extending substantially horizontally, and a rear frame pair extending rearward and downward from said front frame pair, said rear transmission mechanism being supported by said rear frame pair, said recess having an opening width larger than a width of said rear frame pair.
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