Retaining device, in particular for a workpiece
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Dec 7, 1999
Grant Date -
N/A
app pub date -
Sep 23, 1998
filing date -
Jan 23, 1997
priority date (Note) -
Expired
status (Latency Note)
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Importance

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Abstract
A retaining device has clamping elements arranged on a housing that act as detachable locking elements and can be radially displaced when a pressure member located in the housing is axially displaced. First and second pressure media can act upon the pressure member in the axial direction and the second pressure medium acts upon the pressure member in the opposite direction to the first pressure medium. The retaining device is considerably simplified in that two chambers which follow each other in the axial direction are designed in the housing and separated by a membrane anchored on the housing and having axially movable sections. The pressure member is joined to the membrane and at least one of the chambers can be connected to a pressure medium source.
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 | |
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SYSTEM 3R INTERNATIONAL AB | 162 50 VÄLLINGBY |
International Classification(s)

- 1998 Application Filing Year
- B23B Class
- 397 Applications Filed
- 180 Patents Issued To-Date
- 45.35 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Nordquist, Hakon | Taby, SE | 9 | 99 |
# of filed Patents : 9 Total Citations : 99 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 7 Citation Count
- B23B Class
- 2.25 % this patent is cited more than
- 26 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

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Oct 09, 2014 | AS | ASSIGNMENT | free format text: SECURITY INTEREST;ASSIGNOR:LEARNING RESOURCES, INC.;REEL/FRAME:033965/0244 Owner name: JPMORGAN CHASE BANK, N.A., ILLINOIS Effective Date: Oct 09, 2014 |
Aug 04, 2008 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Jul 28, 2008 | FPAY | FEE PAYMENT | year of fee payment: 12 |
Oct 16, 2006 | AS� | SECURITY INTEREST | free format text: SECURITY AGREEMENT;ASSIGNOR:LEARNING RESOURCES, INC.;REEL/FRAME:018471/0176 Owner name: J.P. MORGAN CHASE BANK NATIONAL ASSOCIATION,ILLINO Effective Date: Oct 16, 2006 free format text: SECURITY AGREEMENT;ASSIGNOR:LEARNING RESOURCES, INC.;REEL/FRAME:018471/0176 Owner name: J.P. MORGAN CHASE BANK NATIONAL ASSOCIATION, ILLIN Effective Date: Oct 16, 2006 |
Jul 28, 2004 | FPAY | FEE PAYMENT | year of fee payment: 8 |
Dec 08, 2003 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
Jul 18, 2000 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Jan 28, 1997 | I | Issuance | |
Dec 23, 1996 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Nov 16, 1994 | F | Filing | |
Nov 16, 1994 | PD | Priority Date | |
Nov 15, 1994 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WOLDENBERG, RICHARD;HOFFMAN, LISA;REEL/FRAME:007300/0091 Owner name: LEARNING RESOURCES, INC., ILLINOIS Effective Date: Nov 15, 1994 |

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