Harvesters – Motorized harvester – Including motorized vehicle causing transit of harvester
Patent
1994-05-20
1995-05-02
Novosad, Stephen J.
Harvesters
Motorized harvester
Including motorized vehicle causing transit of harvester
56 171, 56DIG22, A01D 3464, A01D 3474, A01D 6700
Patent
active
054108659
ABSTRACT:
A mid-mount type riding lawn tractor includes tractor frames, a mower unit disposed under the tractor frames, and a connection structure for vertically movably connecting the mower unit to the tractor frames. The connection structure includes support arms extending substantially longitudinally of the tractor frames, each of the support arms being pivotally connected at one end thereof to a lower position of one of the tractor frames, and at the other end to a portion of the mower unit, interlocking links each pivotally connected at one end thereof to a position of the mower unit closer than the portion of the mower unit to the position of connection between the support arm and the tractor frame, each of the interlocking links having a free end, and seesaw arms. Each seesaw arm has an intermediate connecting portion pivotally connected to an intermediate position of one of the support arms, a first arm portion extending in one direction from the intermediate connecting portion, the first arm portion being pivotally connected at a distal end thereof to the free end of the interlocking link, and a second arm portion extending in a different direction to the first arm portion from the intermediate connecting portion, the second arm portion having a contact for contacting one of the tractor frames from below.
REFERENCES:
patent: 2928223 (1960-03-01), Danuser
patent: 3283486 (1966-11-01), Marek et al.
patent: 3483684 (1969-12-01), Price
patent: 3654749 (1972-04-01), Ostergren et al.
patent: 3680880 (1972-08-01), Blaauw
patent: 4120136 (1978-10-01), Rose
patent: 4869057 (1989-09-01), Siegrist
patent: 5351467 (1994-10-01), Trefz et al.
Kurohara Kazuaki
Ogasawara Hiroyuki
Kubota Corporation
Novosad Stephen J.
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