Endless belt power transmission systems or components – Control for variable input to output speed-ratio
Patent
1993-03-08
1994-06-28
Bui, Thuy M.
Endless belt power transmission systems or components
Control for variable input to output speed-ratio
F16H 1500
Patent
active
053242360
ABSTRACT:
A toroidal-type power transmission device in which pivoting drive wheel assemblies (5 and 6), comprised each in part of a drive wheel (15) and frictional ring (18), transmit rotational power from a driving toroidal race (1) to a driven toroidal race (2). For each pivoting drive wheel assembly (5 and 6), a drive wheel (15) is rotatably attached to a holding frame (19), such that each drive wheel (15) is permitted substantially free rotation about a respective axle (17). One end of a holding frame (19) is rotatably attached with a control shaft (20) to a mounting structure (10). The opposite end of the holding frame (19) is rotatably attached with a control shaft (21) to a mounting structure (9). The drive wheel (15) and holding frame (19) can therefore pivot as a unit about an axis situated through control shaft (20) and control shaft (21). A driving toroidal race (1) is fixedly attached to a driving shaft (3). The driving shaft (3) is rotatably attached to a mounting structure (12). A driven toroidal race (2) is fixedly attached to a driven shaft (4). The driven shaft (4) is rotatably attached to a mounting structure (13). Engaged semi-cogs (7 and 8) are fixedly attached to the control shafts of the pivoting drive wheel assemblies (5 and 6). In operation, a control lever (14), fixedly attached to a semi-cog (8), is actuated to pivot the drive wheels to a selected drive ratio. The active drive ratio is determined by the position of the drive wheels as they contact the driving toroidal race (1) and driven toroidal race (2). This device therefore provides an infinite selection of drive ratios within the range of drive ratios provided by the particular dimensions of such a device. The transition from one drive ratio to another drive ratio is smooth and continuous. The pivoting control of the drive wheels is accomplished in unison by the engaged semi-cogs (7 and 8), a mechanism that is much simpler and less cumbersome than pivoting controls on other toroidal-type transmissions.
REFERENCES:
patent: 2124399 (1938-07-01), Hayes
patent: 4499782 (1985-02-01), Perry
patent: 4885949 (1989-12-01), Barber
LandOfFree
Control mechanism for toroidal-type transmissions does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control mechanism for toroidal-type transmissions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control mechanism for toroidal-type transmissions will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2374789