US Patent No: 5,401,035

Number of patents in Portfolio can not be more than 2000

Circumferential seal for a vacuum pressure chamber on a metering device

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Importance

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Abstract

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A circumferential seal for the clearance space or gap between a vacuum pressure chamber formed by a trough-shaped casing and a revolving transporting disk of a metering device for sealing the vacuum pressure chamber, and preferably, it is used for a single-grain sowing machine.

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First Claim

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Patent Owner(s)

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International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Schoenmaekers, Johannes G Raar 8A, NL-6231 RR Meerseen, NL 1 11

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Aeroquip Corporation (1)
* 4,614,348 Anti-blowout seal 15 1985
 
DEERE & COMPANY (1)
* 4,664,290 Method and apparatus for precise positioning of a seed disk in a seed meter 30 1985
 
KINZE MANUFACTURING, INC. (1)
* 5,058,766 Seed meter for row crop planter unit 44 1990
 
KLOCKNER-WERKE AKTIENGESELLSCHAFT (1)
* 4,346,903 High-pressure seal in piston 10 1981
 
Westinghouse Electric Corp. (1)
* 5,071,318 Reactor coolant pump having improved dynamic secondary seal assembly 15 1990
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
CNH AMERICA LLC (9)
* 5,842,428 Vacuum seed metering apparatus having housing openings 6 1996
* 6,109,193 Seed planter apparatus and method 33 1998
* 6,044,779 Multiple drop seed disc 11 1998
6,401,638 Seed planter apparatus and method 14 2000
6,374,759 Seed planter apparatus and method 4 2000
6,325,005 Seed planter apparatus and method 7 2000
6,564,730 Seed planter apparatus and method 7 2001
6,776,108 Seed planter apparatus and method 5 2003
6,739,272 Seed planter apparatus and method 4 2003
 
HAK, LARRY (1)
* 6,634,522 Universal seed metering disc 4 2001
 
Other [Check patent profile for assignment information] (1)
* 6,283,051 Small seed dispenser 2 1998
* Cited By Examiner