Valve gear for load change valves of four-stroke internal combustion engines
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 19, 2008
Grant Date -
Feb 1, 2007
app pub date -
Jul 27, 2006
filing date -
Jul 28, 2005
priority date (Note) -
Expired
status (Latency Note)
![]() |
A preliminary load of PAIR data current through [] has been loaded. Any more recent PAIR data will be loaded within twenty-four hours. |
PAIR data current through []
A preliminary load of cached data will be loaded soon.
Any more recent PAIR data will be loaded within twenty-four hours.
![]() |
Next PAIR Update Scheduled on [ ] |

Importance

US Family Size
|
Non-US Coverage
|
Patent Longevity
|
Forward Citations
|
Abstract
Valve gears for load-change valves of four-stroke internal combustion engines, in which the load-change valves are closed by spring force, engage a pivot lever moved by a cam for opening a load-change channel. The cam engages an intermediate element that it is additionally moved by the lifting curve of the cam during a different work cycle, and adjusts the pivot lever to open the load-change valve slightly during a different work cycle. The intermediate element is prismatically guided on an element that can pivot in the cylinder head and is adjustable in its position, and engages the cam and the pivot lever, so that the stroke movement of the cam for opening the load-change valve via the pivot lever can be adjusted.
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 | |
---|---|---|
IAV GMBH INGENIEURGESELLSCHAFT AUTO UND VERKEHR | 10587 BERLIN |
International Classification(s)

- 2006 Application Filing Year
- F01L Class
- 448 Applications Filed
- 236 Patents Issued To-Date
- 52.68 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Werler, Andreas | Zwickau, DE | 21 | 113 |
# of filed Patents : 21 Total Citations : 113 | |||
Wutzler, Jorg | Zwickau, DE | 6 | 18 |
# of filed Patents : 6 Total Citations : 18 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 0 Citation Count
- F01L Class
- 0 % this patent is cited more than
- 17 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|
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

Matter Detail

Renewals Detail
