Tensioner for toothed drive belts

Details Tensioner for toothed drive belts Tensioner for toothed drive belts

1986-06-11

1987-11-24

Novosad, Stephen J.

Endless belt power transmission systems or components

Means for adjusting belt tension or for shifting belt,...

With sensor for controlling operation of shifter to correct...

474138, F16H 712

Patent

active

047086963

ABSTRACT:
A tensioner for toothed belts comprises a hydraulic fluid filled cylinder having a piston with a rod projecting out of the cylinder and engaging a pivoted arm with a roller at one end for engaging the belt. A spring within the cylinder urges the rod in the projecting direction, and a check valve carried by the piston allows the rod to project rapidly to take up slack in the belt. Hydraulic fluid, however, flows through the small clearance between the piston and the cylinder wall as the rod retracts, and therefore limits the rate of retraction. A path is provided between seals surrounding the rod to route air directly to the reservoir so that it does not enter the fluid chambers within the cylinder. The piston material is chosen to expand more rapidly than the cylinder with increasing temperatures to reduce variations in leak-down time.

REFERENCES:
patent: 3574418 (1971-04-01), Okabe
patent: 3595551 (1971-07-01), Ortheil
patent: 3666256 (1972-05-01), Ellis et al.
patent: 3794309 (1974-02-01), Chrokey et al.
patent: 4411638 (1983-10-01), Wilson
patent: 4472161 (1984-09-01), Ojima
patent: 4539001 (1985-09-01), Okabe

Affiliated with

Also associated with

Rating

Tensioner for toothed drive belts does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tensioner for toothed drive belts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tensioner for toothed drive belts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2422942