Face ring retainer arrangement for mechanical seal
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 3, 1996
Grant Date -
N/A
app pub date -
Jun 29, 1994
filing date -
Jun 29, 1994
priority date (Note) -
Expired
status (Latency Note)
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Importance

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Abstract
A mechanical seal assembly having a face ring disposed within an axially-opening recess associated with a support ring. The support ring includes a sleevelike shroud which externally surrounds and maintains the face ring in concentric relationship. A separate retainer ring cooperates between the shroud and face ring to axially and positionally secure the face ring to the support ring. The retainer ring includes an annular ring part which projects radially inwardly so as to radially overlap a part of the exposed face of the face ring to effect axial securement thereof to the support ring. The retainer ring in addition has an axially-extending sleeve part which projects axially and in surrounding relationship to the shroud. This sleeve part has a press-fit engagement with the shroud to create a fixed engagement of the retainer ring to the support ring.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
FLOWSERVE MANAGEMENT COMPANY | 222 W LAS COLINAS BOULEVARD SUITE 1500 IRVING TEXAS 75039 UNITED STATES OF AMERICA |
International Classification(s)

- 1994 Application Filing Year
- F16J Class
- 253 Applications Filed
- 141 Patents Issued To-Date
- 55.74 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Mason, Harry L | Portage, MI | 3 | 25 |
# of filed Patents : 3 Total Citations : 25 | |||
Vesey, John R | Mattawan, MI | 1 | 8 |
# of filed Patents : 1 Total Citations : 8 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 8 Citation Count
- F16J Class
- 2.41 % this patent is cited more than
- 29 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events
Date | Code | Event | Description |
---|---|---|---|
Jan 25, 2018 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Sep 03, 2004 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Sep 03, 2004 |
Sep 03, 2004 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Mar 24, 2004 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Aug 08, 2000 | AS� | SECURITY INTEREST | free format text: SECURITY AGREEMENT;ASSIGNOR:FLOWSERVE MANAGEMENT COMPANY;REEL/FRAME:011035/0494 Owner name: BANK OF AMERICA, N.A., AS COLLATERAL AGENT, CALIFO Effective Date: Aug 08, 2000 |
Dec 29, 1999 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Apr 23, 1999 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FLOWSERVE HOLDINGS, INC.;REEL/FRAME:010288/0432 Owner name: FLOWSERVE MANAGEMENT COMPANY, TEXAS Effective Date: Apr 23, 1999 |
Apr 23, 1999 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FLOWSERVE INTERNATIONAL, INC.;REEL/FRAME:010255/0029 Owner name: FLOWSERVE HOLDINGS, INC., TEXAS Effective Date: Apr 23, 1999 |
Apr 23, 1999 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FLOWSERVE CORPORATION;REEL/FRAME:010226/0040 Owner name: FLOWSERVE INTERNATIONAL, INC., TEXAS Effective Date: Apr 23, 1999 |
Apr 23, 1999 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DURAMETALLIC CORPORATION;REEL/FRAME:010206/0385 Owner name: FLOWSERVE CORPORATION, TEXAS Effective Date: Apr 23, 1999 |
Sep 03, 1996 | I | Issuance | |
Jul 01, 1994 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:VESEY, JOHN R.;MASON, HARRY L.;REEL/FRAME:007109/0442 Owner name: DURAMETALLIC CORPORATION, MICHIGAN Effective Date: Jul 01, 1994 |
Jun 29, 1994 | F | Filing | |
Jun 29, 1994 | PD | Priority Date |

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