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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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 28 1985
 
KINZE MANUFACTURING, INC. (1)
5,058,766 Seed meter for row crop planter unit 42 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

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 32 1998
6,044,779 Multiple drop seed disc 8 1998
6,401,638 Seed planter apparatus and method 11 2000
6,374,759 Seed planter apparatus and method 3 2000
6,325,005 Seed planter apparatus and method 6 2000
6,564,730 Seed planter apparatus and method 6 2001
6,776,108 Seed planter apparatus and method 2 2003
6,739,272 Seed planter apparatus and method 1 2003
 
HAK, LARRY (1)
6,634,522 Universal seed metering disc 2 2001
 
Other [Check patent profile for assignment information] (1)
6,283,051 Small seed dispenser 2 1998