Rotary pump or the like

• US 3,152,553 A
• Filed: 11/21/1961
• Issued: 10/13/1964
• Est. Priority Date: 12/13/1960
• Status: Expired due to Term

• Current Assignee: Sverker Rydberg
• Original Assignee: Sverker Rydberg
• Inventors: SVERKER RYDBERG
• Application Number:
  US04/153,971
• Time in Patent Office: 1,057 Days
• US Class Current: 417/477.1
• CPC Class Codes: F03C 7/00 Engines of flexible-wall type
• CPC Class Codes: F04B 43/14 having plate-like flexible members

Claims

1. A ROTARY PUMP COMPRISING A CYLINDRICAL HOUSING HAVING A CIRCUMFERENTIALLY EXTENDING GROOVE FORMED ON THE INNER FACE THEREOF AND AN AXIALLY EXTENDING SLOT FORMED THEREIN BETWEEN AN INLET AND OUTLET OPENING IN COMMUNICATION WITH SAID GROOVE;

A DIAPHRAGM DISPOSED ACROSS THE GROOVE;

A BEAD ON THE INNER FACE OF THE DIAPHRAGM;

A PERFORATE WALL AT ONE END OF THE HOUSING;

A COVER PLATE AT THE OPPOSITE END THEREOF;

A ROLLER ADAPTED TO ROLL AGAINST SAID BEAD AND IN DOING SO TO PRESS THE DIAPHRAGM INTO THE GROOVE, SAID DIAPHRAGM BEING IN THE FORM OF A CYLINDRICAL POT HAVING AN OUTWARDLY DIRECTED FLANGE AT ONE END THEREOF AND A FLAT BOTTOM AT THE OPPOSITE END THEREOF, THE BOTTOM BEING PROVIDED WITH A CENTRAL OPENING ADAPTED TO RECEIVE A ROTOR SHAFT;

AN AXIAL RIB ON THE OUTER SURFACE OF SAID DIAPHRAGM AND ADAPTED TO SEALINGLY FIT WITHIN SAID SLOT;

A WASHER PLATE IN ENGAGEMENT WITH THE INNER SURFACE OF SAID BOTTOM;

AND FASTENING MEANS SECURING SAID PLATE TO SAID END WALL WHEREBY TO RETAIN SAID BOTTOM AGAINST SAID END WALL, SAID OUTWARDLY DIRECTED FLANGE BEING CLAMPED BETWEEN SAID COVER PLATE AND SAID HOUSING, SAID AXIAL RIB HAVING A BORE EXTENDING THERETHROUGH AND ADAPTED TO RECEIVE A PIN FOR ENGAGEMENT WITH THE END WALL AND THE COVER PLATE WHEREBY TO RETAIN SAID RIB IN SAID SLOT.