Rotary kinetic fluid motors or pumps – Selectively adjustable vane or working fluid control means – Separate means upstream and downstream of blade set
Patent
1985-11-27
1987-12-01
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
Selectively adjustable vane or working fluid control means
Separate means upstream and downstream of blade set
415150, 406112, 137870, B65G 5108, F04D 2940
Patent
active
047100982
ABSTRACT:
A blower and valve apparatus for a pneumatic tube system is enclosed in a divided housing (10). A conventional blower fan (36) operates to create pressure in a pressure area P and suction in a suction area S of the housing. Area P has two air passage outlets; a first pressure outlet (38) to atmosphere and a second pressure outlet (40) to a neutral area C. Area S likewise has two air passage outlets; a first suction outlet (44) to atmosphere and a second suction outlet 42 to neutral area C. Area C is connected through a coupling (23) to the end of a pneumatic tube. A first rotatable flapper vane (50) is mounted in area P. At one extreme of its arcuate movement, the rotatable flapper vane closes the first pressure outlet to atmosphere and at the other extreme closes the second pressure outlet to area C. A second rotatable flapper vane (54) is mounted in area S. At one extreme of its arcuate movement the second flapper vane (54) closes the first suction outlet to atmosphere and at the other extreme closes the second suction outlet to area C. The rotatable flapper vanes are rotated together by a control linkage (63). The control linkage is arranged so that in a first position the vane in area S closes the outlet to atmosphere and opens the outlet to area C while the vane in area P closes the outlet to area C (40) leaving the outlet to atmosphere in area P open.
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Anders Walter G.
Grosswiller, Jr. Leo J.
Lozier Benjamin F.
Rozlosnik Alan J.
Diebold Incorporated
Garrett Robert E.
Hochberg D. Peter
Pitko Joseph M.
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