Interrelated power delivery controls – including engine control – Transmission control – Engine starting interlock
Patent
1995-08-11
1996-12-24
Luong, Vinh T.
Interrelated power delivery controls, including engine control
Transmission control
Engine starting interlock
74474, 74570, F16H 6336
Patent
active
055869556
ABSTRACT:
A neutral start mechanism having first and second arm members coupled with an input control shaft of a hydrostatic transmission and which extend at angles to one another for being pulled back to a neutral position by a spring. First and second slots are formed in the second arm member for receiving first and second pin members which are positioned in the end portions of the slots when the linkage is in its neutral mode. First and second switches are positioned adjacent the end portions of the first and second slots for sensing the presence of the pin members within the end portions of the slots. The switches are coupled with the vehicle power source for preventing the power source from being started when the pins are not in the end portions of the slots and the linkage and transmission are not in a neutral, non-driving mode.
REFERENCES:
patent: 3613817 (1971-10-01), Glass et al.
patent: 3858675 (1975-01-01), Geis
patent: 4279179 (1981-07-01), Marto
patent: 4759417 (1988-07-01), Wanie et al.
patent: 4883137 (1989-11-01), Wanie et al.
Brochure published by Gravely International, Inc., entitled "Gravely Promaster 400 Series", 6 pages (see particularly p. 3), dated Jul. 1992, published in the U.S.A.
Copies of six photographs showing the control mechanism found on vehicles sold by Gravely International, Inc., 2 pages containing copies of six photographs taken in 1990 by employee of Deere & Company.
Sketch drawn by employee of Deere & Company showing a schematic representation of the control mechanism found on the Gravely Promaster 400 Series vehicles, 1 page, sketched approximately 25 Apr. 1990.
Deere & Company
Estremsky Sherry Lynn
Luong Vinh T.
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