Device in rotary machines useful as pumps, motors and fluid meters

• US 3,175,507 A
• Filed: 05/03/1962
• Issued: 03/30/1965
• Est. Priority Date: 05/05/1961
• Status: Expired due to Term

• Current Assignee: Sverker Rydberg
• Original Assignee: Sverker Rydberg
• Inventors: SVERKER RYDBERG
• Application Number:
  US04/192,199
• Time in Patent Office: 1,062 Days
• US Class Current: 417/477.1
• CPC Class Codes: F03C 7/00 Engines of flexible-wall type
• CPC Class Codes: F04B 43/0054 particularities of the flexible members
• CPC Class Codes: F04B 43/14 having plate-like flexible members

Claims

1. A ROTARY PUMP COMPRISING A CYLINDRICAL HOUSING HAVING A CONCAVE GROOVE FORMED ON THE INNER FACE THEREOF;

A CYLINDRICAL DIAPHRAGM CARRIED WITHIN SAID HOUSING AND DISPOSED OVER SAID GROOVE;

A BEAD ON THE INNER FACE OF THE DIAPHRAGM;

AN OUTWARDLY DIRECTED FLANGE AT ONE END OF SAID DIAPHRAGM;

A COVER PLATE CLAMPING SAID FLANGE TO SAID HOUSING;

AN INWARDLY DIRECTED FLANGE AT THE OPPOSITE END OF THE DIAPHRAGM, SAID FLANGE DEFINING A CENTRAL OPENING ADAPTED TO RECEIVE A DRIVING SHAFT;

A ROLLER ADAPTED TO ROLL AGAINST SAID BEAD AND IN DOING SO TO PRESS SAID DIAPHRAGM INTO SAID GROOVE IN THE HOUSING;

AN AXIAL RIB ON THE OUTER FACE OF SAID DIAPHRAGM AND ADAPTED TO FIT WITHIN A CORRESPONDING SLOT FORMED IN THE HOUSING BETWEEN THE INLET AND AN OUTLET OPENING IN COMMUNICATION WITH SAID GROOVE, SAID AXIAL RIB HAVING A BORE EXTENDING THERETHROUGH AND ADAPTED TO RECEIVE A PIN FOR ENGAGEMENT WITH SAID COVER PLATE WHEREBY TO RETAIN SAID RIB IN SAID SLOT;

A BUSHING CARRIED WITHIN SAID CENTRAL OPENING AND HAVING A SKIRT THEREON IN ENGAGEMENT WITH SAID INWARDLY DIRECTED FLANGE;

AND MEANS COUPLED WITH SAID BUSHING WHEREBY TO DRAW THE SAME OUTWARDLY WITH RESPECT TO SAID HOUSING AND THEREBY MAINTAIN SAID SKIRT IN TIGHT ENGAGEMENT WITH SAID INWARDLY DIRECTED FLANGE.