Variable speed drive

Details Variable speed drive Variable speed drive

1981-02-27

1983-04-26

King, Lloyd L.

Pumps

Condition responsive control of pump drive motor

With control of pump drive transmission

474 26, F04B 4900

Patent

active

043811744

ABSTRACT:
A variable speed drive wherein a first embodiment is comprised of a pivotally mounted prime mover (10) coupled to a rotary fluid output device (58), such as a fan or pump, through a variable and fixed pulley drive arrangement (50 and 52) wherein the pivotal position of the prime mover (10) and accordingly the pitch diameter of variable pulley means (50) is controlled in accordance with fluid motor means (26, 28) coupled to the prime mover (10) and which is actuated in response to a fluid feedback control signal derived from a sensed output of the rotary fluid output device (58). The pivotal motion of the prime mover (10) imparts an arcuate motion to the variable pulley means (50) which effects a speed variation of the rotary fluid output device (58) in accordance with the variation of the pitch diameter ratio of opposing variable and fixed pulley means (50 and 52). In a second embodiment, idler pulley means (82 and 84) are pivotally mounted between the prime mover (10) and the rotary fluid output device (58) and an arcuate movement is imparted to the idler pulley means by means of the fluid motor actuator means (94). The idler pulley means (82 and 84) are connected to respective opposing pulleys (96) and (98) located on the shafts of prime mover (10) and the rotary output device (58) with at least one of the pulleys of the combination being variable pulley means which acts to change its pitch diameter in response to arcuate motion of the idler pulley means and accordingly vary the speed of the rotary output device (58).

REFERENCES:
patent: 2289287 (1942-07-01), Hallinan
patent: 2350913 (1944-01-01), Mercer
patent: 2369044 (1945-02-01), Hallinan
patent: 2448379 (1948-08-01), Mantle
patent: 2506738 (1980-05-01), Raypholtz
patent: 2507904 (1950-05-01), Heller et al.
patent: 2695529 (1954-11-01), Evans
patent: 2927471 (1960-03-01), Long
patent: 3129598 (1964-04-01), Buss
patent: 3354749 (1965-03-01), Sadier
patent: 3362240 (1968-01-01), Beck
patent: 3369417 (1968-02-01), Scott et al.
patent: 3425288 (1969-02-01), Golden et al.
patent: 3685365 (1972-08-01), Bauer
"Design of Machine Elements" by V. M. Faires, MacMillian Co., (1934) pp. 133-136, 159-161.

Affiliated with

Also associated with

Rating

Variable speed drive 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 speed drive, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable speed drive will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1563330