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US 4,146,195 AGranted
Direction changing section of pneumatic tube conveyor
OwnerDonal R. Brooksinventor
Life of this patent
Estimating the term…
Abstract
A direction changing section of tubing for a pneumatic tube conveyor wherein a carrier with at least one seal ring around it is of a diameter substantially equal to the diameter of the tube. The portion of the section around the curve is of enlarged inner dimension radially of the curve to enable a carrier to move around it along a series of chords and, hence, turn in a tighter arc. A multiplicity of flexible seal members across and along the curved portion extend radially of the curve so as to be engaged by the carrier passing therethrough.
Claims5
For installation in a pneumatic tube conveyor system comprising:
- a lengthy tube extending between at least two sending and receiving stations, and being of a principal inner diameter over most of the length thereof;
- and
- hollow carriers having cylindrical end portions, each with a seal ring around it of a diameter substantially equal to the principal inner diameter of said tube to enable propulsion thereof by a gas pressure differential along the length of said tube;
- a direction-changing section of tubing comprising;
- end portions of substantially said principal inner diameter;
- an intermediate portion disposed along an arcuate path;
- said intermediate portion being enlarged in inner cross-section dimension in the direction radial of said arcuate path to enable a carrier to move around said intermediate portion with said seal rings engaging the radially outer surface thereof;
- and
- a plurality of flexible seal members across said intermediate portion extending outward from the radially inner surface thereof so as to be engagable by, and seal against a carrier passing therethrough.
6 more elements
Dependencies are inferred from the claim text.