Tractor with a PTO apparatus

Details Tractor with a PTO apparatus Tractor with a PTO apparatus

2005-06-24

2008-09-09

Fenstermacher, David M (Department: 3682)

Machine element or mechanism

Power take-off

C074S015400, C074S015820, C074S473210

Reexamination Certificate

active

07421917

ABSTRACT:
A tractor with a PTO apparatus, comprises: a plurality of wheels; a vehicle body supported by the plurality of wheels; an engine supported on the vehicle body; a rear PTO shaft disposed at a rear of the vehicle body for transmitting power from the engine; a mid-PTO shaft disposed under the vehicle body for transmitting power from the engine; a PTO mode selecting device having a first position for transmitting power only to the rear PTO shaft, a second position for transmitting power to both the rear PTO shaft and said mid-PTO shaft, and a third position for transmitting power only to said mid-PTO shaft; a PTO clutch disposed on a transmission line upstream of said PTO mode selecting device and switchable between an engaged position and a disengaged position; and a restricting mechanism for preventing a change operation of said PTO mode selecting device when said PTO clutch is in the engaged position, and permitting the change operation of said PTO mode selecting device when said PTO clutch is in the disengaged position.

REFERENCES:
patent: 3763976 (1973-10-01), Prokop et al.
patent: 4398433 (1983-08-01), Sonns
patent: 4517856 (1985-05-01), Schafer et al.
patent: 5085095 (1992-02-01), Lasoen
patent: 5145469 (1992-09-01), Lasoen
patent: 56-153151 (1981-11-01), None
patent: 56-160222 (1981-12-01), None
patent: 61-031742 (1986-02-01), None
patent: 05-162551 (1993-06-01), None
patent: 05-246258 (1993-09-01), None
patent: 07-205673 (1995-08-01), None

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