Endless belt power transmission systems or components – Pulley with belt-receiving groove formed by drive faces on... – Speed responsive
Patent
1989-11-02
1990-07-24
Bui, Thuy M.
Endless belt power transmission systems or components
Pulley with belt-receiving groove formed by drive faces on...
Speed responsive
474 25, 474 35, F16H 1106
Patent
active
049432648
ABSTRACT:
An automatic variable speed centrifugal clutch with belt tightening assembly is characterized by even transmission of rotational drive to a pair of belts and includes a rotating spindle and clutch plate having an adjustable centrifugally operable belt tightening mechanism. The belt tightening mechanism includes a clutch drum and a spacer which define recesses for receiving the belts to be driven. Slide rails slidably inserted through slide rail holes in the clutch drum and spacer, and connected at their ends to the clutch plate and spindle flange rotationally interlock the clutch assembly yet allow for longitudinal displacement of the clutch drum and spacer means relative to the spindle flange. As the spindle rotates, the clutch drum presses the spacer against a flange of the spindle to evenly drive the belts while compensating for differences in belt size.
REFERENCES:
patent: 2104074 (1938-01-01), Erbach
patent: 2144443 (1939-01-01), Thomas
patent: 2508558 (1950-05-01), Wolff
patent: 3269200 (1966-08-01), Vaughn et al.
patent: 4743221 (1988-05-01), Whiteman
Bui Thuy M.
Dykas Frank J.
Korfanta Craig M.
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