Fuel vapor recovery system
First Claim
Patent Images
1. Apparatus for recovering vapor in a fuel dispensing system, said apparatus comprising:
- an inner hose and an outer hose, said inner hose being disposed within said outer hose;
a first turbine disposed within said inner hose; and
a second turbine disposed outside said inner hose and inside said outer hose, said first turbine and said second turbine being coupled so that rotation of one of said turbines caused by fuel flowing powers rotation of the other of said turbines thereby causing vapor recovery, said turbines being cylindrical and each rotating about a longitudinal axis and installed within said hoses longitudinally with said longitudinal axes being parallel to the direction of fuel and vapor flow.
47 Assignments
0 Petitions
Accused Products
Abstract
An improved vapor recovery system for use in a fuel dispensing arrangement is disclosed employing two concentrically arranged hoses. The inner hose includes a turbine disposed therein which rotates in response to fuel flowing therethrough. The outer hose includes a turbine which is preferably magnetically coupled to the turbine included within the inner hose. Rotation of the turbine in the inner hose causes rotation of the turbine in the outer hose and rotation of the turbine in the outer hose creates a vacuum which recovers vapors from the fuel being dispensed.
51 Citations
12 Claims
-
1. Apparatus for recovering vapor in a fuel dispensing system, said apparatus comprising:
-
an inner hose and an outer hose, said inner hose being disposed within said outer hose; a first turbine disposed within said inner hose; and a second turbine disposed outside said inner hose and inside said outer hose, said first turbine and said second turbine being coupled so that rotation of one of said turbines caused by fuel flowing powers rotation of the other of said turbines thereby causing vapor recovery, said turbines being cylindrical and each rotating about a longitudinal axis and installed within said hoses longitudinally with said longitudinal axes being parallel to the direction of fuel and vapor flow. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. Apparatus for recovering vapor in a fuel dispensing system, said apparatus comprising:
-
an inner hose and an outer hose, said inner hose being disposed within said outer hose; a first turbine disposed within said inner hose; and a second turbine disposed outside said inner hose and inside said outer hose, said first turbine and said second turbine being coupled so that rotation of one of said turbines caused by fuel flowing causes rotation of the other of said turbines thereby causing vapor recovery, said inner turbine and said outer turbine being arranged as concentric cylinders and said inner and outer hoses being arranged as concentric cylinders. - View Dependent Claims (9, 10)
-
-
11. Apparatus for recovering vapor in a fuel dispensing system, said apparatus comprising:
-
an inner hose and an outer hose, said inner hose being disposed within said outer hose; a first turbine disposed within said inner hose; and a second turbine disposed outside said inner hose and inside said outer hose, said first turbine and said second turbine being coupled so that rotation of one of said turbines caused by fuel flowing causes rotation of the other of said turbines thereby causing vapor recovery, each of said turbines including at least one magnet thereon, wherein the position of said magnets can be offset with respect to each other such that said magnetic coupling may be varied.
-
-
12. Apparatus for recovering vapor in a fuel dispensing system, said apparatus comprising:
-
an inner hose and an outer hose, said inner hose being disposed within said outer hose; a first turbine disposed within said inner hose; and a second turbine disposed outside said inner hose and inside said outer hose, said first turbine and said second turbine being magnetically coupled so that rotation of one of said turbines caused by fuel flowing causes rotation of the other of said turbines thereby causing vapor recovery, each of said turbines including at least one magnet thereon, wherein the position of said magnets can be offset with respect to each other such that said magnetic coupling may be varied.
-
Specification