Secondary suspension for a rail vehicle truck
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 9, 1988
Grant Date -
N/A
app pub date -
Dec 16, 1986
filing date -
Dec 20, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A secondary suspension for a rail vehicle truck is arranged between a suspension support connected to the car body of the vehicle and a spring support. It comprises several spring groups, whose spring elements each have a set of coil springs held by an upper and a lower spring plate and a metal-rubber spring element and are individually interchangeable. The spring elements are designed so that replacement of the spring groups can be carried out with the truck installed on the vehicle and without using a pressure stand or a lift. This goal is achieved by the fact that there are at least two diametrically opposed holder claws for spring tension holders on the upper and the lower spring plate of the spring groups, to which the spring tension holders are attached when the spring elements are compressed.
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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WAGGON UNION GMBH | D-5900 SIEGEN |
International Classification(s)

- 1986 Application Filing Year
- B61F Class
- 23 Applications Filed
- 0 Patents Issued To-Date
- 0 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Gebhard, Hans | Minden/Westf., DE | 1 | 5 |
# of filed Patents : 1 Total Citations : 5 | |||
Schwier, Wilfried | Petershagen, DE | 1 | 5 |
# of filed Patents : 1 Total Citations : 5 | |||
von, Madeyski Thilo | Hanover, DE | 2 | 15 |
# of filed Patents : 2 Total Citations : 15 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 5 Citation Count
- B61F Class
- 0 % this patent is cited more than
- 37 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
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Nov 18, 2019 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Nov 18, 2019 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Oct 13, 2019 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Oct 13, 2019 |
Jun 03, 2019 | FEPP | FEE PAYMENT PROCEDURE | free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Jan 13, 2016 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:THE INVENTION SCIENCE FUND I LLC;REEL/FRAME:037540/0134 Owner name: GEARBOX, LLC, WASHINGTON Effective Date: Jan 13, 2016 |
Oct 13, 2015 | I | Issuance | |
Sep 23, 2015 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Jun 10, 2015 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SEARETE LLC;REEL/FRAME:035817/0507 Owner name: THE INVENTION SCIENCE FUND I, LLC, WASHINGTON Effective Date: Jun 10, 2015 |
Mar 20, 2008 | P | Published | |
Nov 13, 2006 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HYDE, RODERICK A.;ISHIKAWA, MURIEL Y.;JUNG, EDWARD K.Y.;AND OTHERS;SIGNING DATES FROM 20060928 TO 20061029;REEL/FRAME:018592/0886 Owner name: SEARETE LLC, WASHINGTON free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HYDE, RODERICK A.;ISHIKAWA, MURIEL Y.;JUNG, EDWARD K.Y.;AND OTHERS;REEL/FRAME:018592/0886;SIGNING DATES FROM 20060928 TO 20061029 Owner name: SEARETE LLC, WASHINGTON |
Sep 28, 2006 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HELMLING, NORBERT;REEL/FRAME:018416/0030 Owner name: DAIMLERCHRYSLER AG, GERMANY Effective Date: Sep 28, 2006 |
Sep 14, 2006 | F | Filing |

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