Valves and valve actuation – Mechanical movement actuator – Gear
Patent
1996-06-11
1999-03-16
Rivell, John
Valves and valve actuation
Mechanical movement actuator
Gear
251294, F16K 3153, F16K 3146
Patent
active
058819940
ABSTRACT:
A rotary temperature control system for use in controlling the temperature of a blended air stream supplied to a vehicle passenger compartment includes a manually operable rotary control knob operatively connected with a control pulley that is, in turn, connected through a pull-pull cable system to a vent pulley. The vent pulley operates a blend door that controls the output temperature of a blended air stream. A drive connection between the vent pulley and a drive shaft of the blend door includes non-circular gears for producing a predetermined generally non-linear relationship between rotary movement of the control pulley and rotary movement of the output shaft to produce a generally linear relationship between the rotary movement of the control pulley and the temperature of the air stream throughout a major portion of the rotary movement of the control pulley.
REFERENCES:
patent: 1501340 (1924-07-01), Hirschler
patent: 2220431 (1940-11-01), Strehs
patent: 2583050 (1952-01-01), Harrower
patent: 3823617 (1974-07-01), Infanger et al.
patent: 4509387 (1985-04-01), Tschanz et al.
patent: 4535932 (1985-08-01), Herb
patent: 4656926 (1987-04-01), Bauer
patent: 5235866 (1993-08-01), Truman et al.
Butler Fred W.
Parekh Bipin D.
Shifflett Dennis
Stevenson Jordan M.
Ford Motor Company
Rivell John
TRW Inc.
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