Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3652192 A
Publication typeGrant
Publication dateMar 28, 1972
Filing dateJan 15, 1970
Priority dateJan 16, 1969
Publication numberUS 3652192 A, US 3652192A, US-A-3652192, US3652192 A, US3652192A
InventorsHahn Karl-Heinz, Kramer Hermann
Original AssigneeLederle Pumpen & Maschf
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Sealed conveying apparatus
US 3652192 A
Abstract
A conveyor screw is mounted in a working chamber to convey a fluid material, and is sealed by a row or stack of sealing elements extending along a surface line of the conveyor screw perpendicular to the turns of the same.
Images(21)
Previous page
Next page
Description  (OCR text may contain errors)

United States Patent Kramer et al.

1451 Mar. 28, 1972 SEALED CONVEYING APPARATUS Hermann Kramer; Karl-Heinz Hahn, both of Freiburg, Germany Pumpen- Und Maschinenfabrik Lederie 011G, Freiburg, Germany Jan. 15, 1970 Inventors:

Assignee:

Filed:

Appl. N0.:

Foreign Application Priority Data [56] References Cited UNITED STATES PATENTS 3,151,806 10/1964 Whitfield ..418/126 X 1,723,157 8/1929 Guttinger, Jr ..4l8/195 1,437,464 12/1922 Carroll 418/195 X 1,306,572 6/1919 Bartlett.... ..418/220 3,181,296 5/1965 Zimmern. 418/195 X 907,022 12/ 1908 Finkle ..418/208 2,625,885 1/1953 Mumma .418/220 Primary ExaminerCarlton R. Croyle Jan. 16, 1969 Germany ..P 19 02 065.6 nin hn J- Vrablik Oct. 6, 1969 Germany ..P 19 50 238.6 A'mmey-M1chaelS-Smker US. Cl ..418/125, 418/129, 418/208, ABSTRACT 418,210 4 1 8/220 418] 418/249 A conveyor screw is mounted in a working chamber to convey 11 1. c1 ..F0lc 19/02,F01c 11/00, F04c 27/00 a fluid material, and is sealed by a row or Stack of sealing def Field of Search ..418/48, 125, 126, 195,208, mems extending along a Surface line of the conveyor screw 418/220, 243, 246, 247, 248, 249, 127-129, 210, perpendicularto the turns ofthe Same.

52 Claims, 31 Drawing Figures I 12a .9 /6: 15 i 17 K 46 15 7/4- \H/I/ I 3 Q 41 /2 i 51 f f 2*; 79 1 INVENTOR #5004 m) fume/z lat/26 4/5/01.

ATTORNEY $HEET 01 0F 21 PATENTEDMAHZB I972 m v a N III IIJ.

PATENT-En mm: 2 8 I972 SHEEI UZDF 21.

INVENTOR H5; Mm! kQAEHE/l lam. 4/2102 H4 H 4/ ATTORNEY P'A'TENTEUMWB I972 SHEET 03 0F 21 l l lil I I INVENTOR l/enum/ kids/1511 ATTORNEY PATENTEDmza 1972 3.652.192

SHEET OSUF 21 INVENTOR #501140 KR km! file/0a H4 ATTORNEY PATENTED ma 2 8 I972 SHEET [-6 OF 21 INVENTOR kma yam/z v l/4mu ATTORNEY PATENTEnmzemz SHEET 070F 21 INVENTOR ATTORNEY mmnmza 1972 3. 652. 192

SHEET O8UF 21 Fig. 77

INVENTOR uemnuu 001mm lair/mu;

ATTORNEY PATENTEDHAR28 I972 3,652,192

sum near 21 Fig. 12

v INVENTOR usnmwv kluchel mg wewz HAHA/ oz-mr 1.5%

ATTORNEY PKTENTE0MAR28|912 3.652.192

saw 10 ur 21 ATTORNEY INVENTOR PATENTEDHARZB I972 SHEET 13UF 21 IIII IHIIIIIJIIII INVENTOR yen/4w [Ila/rel] K416 wen/z. HMW

ATTORNEY PATENTEnmza 1972 3,652,192

sum 15 or 21 BY Ol /40! .S Sh-b- ATTORNEY INVENTOR PATENTEUMAR28 I972 3,652,192

SHEET 17UF 21 INVENTOR Hal/A mu [W Ml! 4/5/02 l-M/l 4 ATTORNEY

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US907022 *Apr 6, 1907Dec 15, 1908Charles E FinkleRotary force-pump.
US1306572 *Jan 24, 1918Jun 10, 1919 l bartlett
US1437464 *Mar 13, 1920Dec 5, 1922Carroll John DPump
US1723157 *Dec 22, 1926Aug 6, 1929Motor Pumpen Ges M B HScrew pump
US2625885 *Mar 4, 1948Jan 20, 1953Fmc CorpInk pump
US3151806 *Sep 24, 1962Oct 6, 1964Whitfield Joseph EScrew type compressor having variable volume and adjustable compression
US3181296 *Jan 31, 1962May 4, 1965Zimmern FernandGas engine with continuous fuel injection
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3975120 *Nov 21, 1974Aug 17, 1976Smith International, Inc.Wafer elements for progressing cavity stators
US3975121 *Nov 20, 1974Aug 17, 1976Smith International, Inc.Wafer elements for progressing cavity stators
US4558954 *Dec 12, 1984Dec 17, 1985Barr Robert AExtruder screw and positive displacement wave pump assembly
US4558991 *Jan 10, 1985Dec 17, 1985Barr Robert AWave pump assembly
US5807087 *Mar 21, 1997Sep 15, 1998Tarby, Inc.Stator assembly for a progressing cavity pump
US6270326 *Aug 31, 1998Aug 7, 2001Seiko Epson CorporationTransfusion device and liquid supply tube
US20120034122 *Apr 21, 2010Feb 9, 2012Pdd Innovations LimitedPump with a resilient seal
Classifications
U.S. Classification418/125, 418/129, 418/220, 418/208, 418/249, 418/210, 418/248
International ClassificationF04C2/00, F04C2/107
Cooperative ClassificationF04C2/107
European ClassificationF04C2/107