Slide gate sealing system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 2, 2004
Grant Date -
Dec 4, 2003
app pub date -
May 30, 2003
filing date -
May 30, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A slide gate sealing system including a seal mounting frame disposed between the longitudinal rails and the intermediate and horizontal end frame members of a slide gate frame, a ball seal disposed in the seal mounting frame and having a mounting tail with a mating surface, a seal retainer to control the deformation of the ball seal under pressure, at least one isolation dam on the mating surface of the ball seal, and a ramping mechanism affixed to the interior side of the horizontal end frame member. The ramping mechanism includes a section of round material attached to the underside of the slide gate blade, and a ramping cam affixed to the interior side of the horizontal end frame member and having an inclined portion upwardly inclined toward the horizontal end frame member, such that when the slide gate blade is moved toward a closed position, the round material and the ramping cam cooperate to urge the slide gate blade upwardly so that the topside of the slide gate blade comes into positive contact with the ball seal.
First Claim
all claims..Other Claims data not available
Family
- No Family data available.
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
RDP TECHNOLOGIES INC | 960 BROOK ROAD BUILDING 8 CONSHOHOCKEN PA 19428 |
International Classification(s)

- 2003 Application Filing Year
- E02B Class
- 152 Applications Filed
- 56 Patents Issued To-Date
- 36.85 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Simon, Richard D | 3030 Bridgeway, Sausalito, CA 94965 | 4 | 118 |
# of filed Patents : 4 Total Citations : 118 |
Cited Art Landscape
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Patent Citation Ranking
- 5 Citation Count
- E02B Class
- 3.70 % this patent is cited more than
- 21 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 |
---|---|---|---|
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 |
---|---|---|---|
Mar 28, 2016 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Mar 02, 2016 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Mar 02, 2016 |
Mar 02, 2016 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Oct 09, 2015 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Aug 31, 2011 | FPAY | FEE PAYMENT | year of fee payment: 8 |
Aug 22, 2011 | SULP | SURCHARGE FOR LATE PAYMENT | |
Jul 21, 2011 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MERKLIN SIMON ENGINEERING, INC.;REEL/FRAME:026765/0117 Owner name: RDP TECHNOLOGIES, INC., PENNSYLVANIA Effective Date: Jul 21, 2011 |
Jul 16, 2011 | AS | ASSIGNMENT | free format text: NUNC PRO TUNC ASSIGNMENT;ASSIGNOR:SIMON, RICHARD D.;REEL/FRAME:026606/0204 Owner name: MERKLIN SIMON ENGINEERING, INC., CALIFORNIA Effective Date: Jul 16, 2011 |
Dec 09, 2010 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAT HOLDER NO LONGER CLAIMS SMALL ENTITY STATUS, ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: STOL); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Dec 08, 2010 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Apr 12, 2007 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Mar 02, 2004 | I | Issuance | |
Dec 04, 2003 | P | Published | |
May 30, 2003 | F | Filing | |
May 30, 2002 | PD | Priority Date |

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