Variable ratio crank assembly

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

74393, F16H 2118

Patent

active

041799429

ABSTRACT:
The lower end of a crank from an internal combustion engine is pivoted on one side of the center of a small gear which in turn is mounted for rotation to one side of the center of a relatively large drive gear. A stationary gear is concentric with the drive gear and an idler gear is mounted for rotation to the drive gear and engages the small gear and the stationary gear. The drive gear engages a take-off gear to transmit power from the piston via the crank and gears. The gear ratio of the small connecting rod gear and fixed gear is such that the small gear rotates at twice the speed of the large gear. The connecting pin of the small gear is furthest from the center of the drive gear at top dead center and bottom dead center and nearest to the center at 90.degree. from top dead center and bottom dead center so that when at top dead center, the crank has the highest mechanical advantage and at 90.degree. therefrom, the lowest mechanical advantage. This means that the piston is slowed down at the center of its stroke thus giving a change of ratio within the engine at each power stroke as well as during the other three strokes.

REFERENCES:
patent: 1191827 (1916-07-01), Reese
patent: 2088332 (1937-07-01), Marchou
patent: 3686972 (1972-08-01), McWhorter

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Variable ratio crank assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable ratio crank assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable ratio crank assembly will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2066210

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.