Nova Patents
US1964330A

Untitled record

Abstract

This record has no abstract on file.

US1964330A, drawing sheet 1
Sheet 1 of 7

Term

Term ended

Expired 26 June 1951, 75.2 years ago.

  1. Granted
  2. Expired
  3. Today

2 claims: 2 independent, 0 dependent

  1. 1
    What I claim is:— 1. In a rotary pump, the combination of an inner rotor, an outer rotor eccentrically disposed relatively to the inner rotor, the rotors having cooperating projections and recesses, and the 85 outer rotor having one projection more than the inner rotor and having inlet and outlet passages formed therein, a housing for the rotors having inlet and outlet passages, a driving shaft to which the inner rotor is secured, a ring disposed be- 90 tween the housing and the outer rotor, which has an outer cylindrical face supported from the housing and an inner relatively eccentric cylindrical face against which the outer rotor bears, the ring having inlet and outlet passages formed 95 therein which place the passages in the housing into communication with those in the outer rotor, means for effecting change in the position of the ring, and means for locking the ring in position.
  2. 2
    In a rotary pump, the combination of an 100 inner rotor, an outer rotor eccentrically disposed relatively to the inner rotor, the rotors having cooperating projections and recesses, and the outer rotor having one projection more than the inner rotor and having inlet and outlet passages formed 105 therein, a housing for the rotors having inlet and outlet passages, a driving shaft to which the inner rotor is secured, a ring disposed between the housing and the outer rotor and which has an outer cylindrical face supported from the no housing and an inner relatively eccentric cylindrical face against which the outer rotor bears, the ring having inlet and outlet passages formed therein which place the passages in the housing in communication with those in the outer rotor, 115 and the ring being automatically moved when the direction of rotation of the spindle is reversed so as to reverse the eccentricity thereof, and means which limits the movement of the ring. ROBERT BRINDLEY PUT. 120
Independent claims2