Title: Vehicle transmission neutralizing system

Abstract: A control system for a vehicle includes fluid pressure actuated brakes and a fluid-pressure engaged transmission. A pair of brake pedals is provided, the first actuating the brakes only, and the second actuating the brakes and also operating a valve for releasing transmission pressure upon application of the second brake pedal, and holding transmission pressure upon release of the second brake pedal. Such valve is operated by transmission of movement of the second brake pedal to a movable valving element, with means provided so that for a given movement of the second brake pedal, the valving element moves less, to provide a degree of valve sensitivity. Adjustment means are associated with the second brake pedal and valving element, to synchronize the operation of the brakes with the engagement and disengagement of the transmission.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Luttrell, Richard W. (Morton, IL, US)

Application Number: 280726
Filing Date: 1972-08-14
Publication_date: 1976-12-28
Assignee: Caterpillar Tractor Co. (Peoria, IL)
Primary Class(es): 192/220.1 192/109A, 192/221
Other Classes:
US Patent Ref:

3050165	Aug, 1962	Day et al.	192/4.
3292752	Dec, 1966	Schuster et al.	192/4.
3339672	Sep, 1967	Crandall	192/13.
3441114	Apr, 1969	Pensa	192/4.

Other Refs:
Primary Examiner: Wyche, Benjamin W.
Assistant Examiner:
Attorney: Phillips, Moore, Weissenberger, Lempio & Strabala