Drive assembly for four-wheel drive vehicles

Details Drive assembly for four-wheel drive vehicles Drive assembly for four-wheel drive vehicles

2006-06-13

2006-06-13

Boehler, Anne Marie (Department: 3611)

Motor vehicles

Having four wheels driven

Including pump and fluid motor, or generator and electric...

C180S305000

Reexamination Certificate

active

07059442

ABSTRACT:
A drive assembly for vehicles with front wheels and rear wheels, especially for tractors, agricultural machinery, construction machinery or for self-driving machines, has an engine (1), a first drive (15) to drive the rear wheels, a second drive (27) to drive the front wheels, an adjustable hydraulic pump (5) driven by the engine (1), and an adjustable first hydraulic motor (9). The first hydraulic motor (9), with respect to drive, is connected to the first drive (15) to drive the rear wheels. Also, the first hydraulic motor, with respect to drive, may be connected to the second drive (27), to drive the front wheels. A second hydraulic motor (10), with respect to drive, can be connected to the second drive (27) to drive the front wheels. The first hydraulic motor (9) has a high coefficient of efficiency within a first driving speed range of the vehicle. The second hydraulic motor (10) has a high coefficient of efficiency within a second driving speed range of the vehicle. The first driving speed range is above the second driving speed range, with both driving speed ranges overlapping.

REFERENCES:
patent: 2996135 (1961-08-01), Grabow
patent: 3979972 (1976-09-01), Sakai et al.
patent: 4306640 (1981-12-01), Morgan
patent: 4886142 (1989-12-01), Yamaoka et al.
patent: 4888949 (1989-12-01), Rogers
patent: 2002/0070065 (2002-06-01), Bracke et al.
patent: 40 34 689 (1994-01-01), None
patent: 42 09 950 (1994-08-01), None
patent: 197 47 459 (1999-05-01), None
patent: 198 27 130 (1999-12-01), None
patent: 0 562 594 (1993-09-01), None
patent: 2 151 565 (1985-07-01), None
patent: 2 257 496 (1993-01-01), None
patent: WO 93/09002 (1993-05-01), None

Affiliated with

Also associated with

Rating

Drive assembly for four-wheel drive vehicles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drive assembly for four-wheel drive vehicles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drive assembly for four-wheel drive vehicles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3627293