Fluid displacement device

Claim 1

A FLUID DISPLACEMENT COMPRISING AS HAFT; A CYLINDER ON THE SHAFT HAVING A DRIVING CONNECTION THEREWITH; A PLURALITY OF LONGITUDINALLY EXTENDING ARCUATELY EQUISPACED VANES CARRIED BY AND RADIALLY MOVABLE RELATIVE TO SAID CYLINDER; SAID CYLINDER BEING ENCLOSED AND SUPPORTED BY A CASING CONSISTING OF AN UPPER STATIONARY BLOCK AND A LOWER STATIONARY BLOCK, EACH BLOCK HAVING A HEMICYCLINDRICAL CAVITY, THE RADIUS OF WHICH IS SUBSTANTIALLY THE SAME AS THE RADIUS OF THE CYLINDER AND THE LENGTH OF WHICH IS SUBSTANTIALLY THE AXIAL LENGTH OF THE CYLINDER, THE SURFACES 13 OR EACH BLOCK AT OPPOSITE SIDES OF THE CAVITY BEING IN THE PLANE OF THE DIAMETER OF THE CAVITY, EACH SAID BLOCK HAVING INGRESS AND EGRESS PASSAGES LEADING TO THE HEMICYLINDRICAL CAVITY; A PAIR OF ELONGATE BARS EACH HAVING A LENGTH WHICH IS EQUAL TO THE LENGTH OF THE CYLINDERR AND A WIDTH EQUAL TO THE WIDTH OF SAID SURFACES 13 AT OPPOSITE SIDES OF THE CAVITY; MEANS INTEGRAL WITH THE BLOCKS AND THE BARS FOR SECURING THE BLOCKS AND THE BARS TOGETHER WITH THE BARS INTERPOSED BETWEEN AND IN ALIGNMENT WITH SAID SURFACES 13 OF THE BLOCKS AT OPPOSITE SIDES OF THE CAVITY TO FORM A UNITARY CASING HAVING A CYLINDER-LIKE CAVITY, APPROXIMATELY OBLATE IN CROSS SECTION, WITHIN WHICH THE CYLINDER ROTATES; MEANS FOR CAUSING SAID VANES TO ENGAGE THE OBLATE-CYLINDRICAL SURFACE OF THE CAVITY AS THE SHAFT ROTATES TO CONFINE FLUID BETWEEN ADJACENT VANES; A SIDE PLATE SECURED TO EACH SIDE OF SAID BLOCKS, EACH SIDE PLATE HAVING FLUID PASSAGES THEREIN; SAID INGRESS AND EGRESS PASSAGES IN EACH BLOCK COMPRISING A PLURALITY OF LONGITUDINALLY SPACED HOLES, EACH SAID HOLE OPENING AT ONE END IN THE SPACE BETWEEN THE OBLATECYLINDRICAL CAVITY IN THE BLOCKS AND THE CYLINDER AND AT THE OTHER END INTO THE PASSAGES IN TH ADJACENT SIDE PLATE; AND END PLATES SECURED TO SAID BLOCKS FOR CLOSING THE ENDS OF SAID CYLINDER-LIKE CAVITY AND HAVING BEARINGS FOR SAID SHAFT.