Method and apparatus for forming agricultural drip tape

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6120634
SERIAL NO

08805173

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A process for forming irrigation drip tape includes, broadly, the steps of a) supplying a longitudinally continuous strip of flexible plastic material in a first direction; b) heating a narrow band of the strip along a longitudinal axis thereof; c) depositing a continuous bead of material on an upper surface of the strip, along the narrow band, while the strip moves in the one direction; d) cooling the strip and the bead; e) folding the strip longitudinally so that the longitudinal edges overlap; and f) sealing said longitudinal edges to form a tubular drip tape with a longitudinal, overlapped seam, with the bead extending parallel to the seam and in opposed, facing relationship thereto. Apparatus for carrying out the process includes a first supply station adapted to supply a continuous length of flexible material; a second station including a trimmer roll and a pair of associated knife blades arranged to trim opposite longitudinal edges of the material to form a strip of predetermined width; a third station including a slitter wheel arranged to cut axially spaced longitudinal slits in the strip; a fourth station for applying a preformed bead of material onto a surface of the strip, the bead having one or more secondary flow paths formed therein; and a fifth station including a plurality of rollers arranged to wrap the strip about a mandrel into tubular form; a nozzle arranged to apply an adhesive bead along one of the longitudinal edges of the strip; and at least one pressure roller for applying pressure along the longitudinal edge to form a bonded seam between the longitudinal edges of the strip.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
Micro Irrigation Technologies, Inc.WALLA WALLA, WA0

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bren, Jr Theodore J Walla Walla, WA 3 18
Harrold, Charles R Walla Walla, WA 7 36

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (3)
* 4473191 Drip irrigation system employing flow regulation 38 1982
* 4642152 Drip irrigation system employing flow regulation 23 1984
* 4749535 Method and apparatus for forming profiled plastic products involving extrusion, roller shaping and cutting 10 1986
 
HUNTLEY, MARK, CO-TRUSTEES OF THE DAVIES ALLPORT TRUST (1)
* 5123984 Method and apparatus for forming ports in drip irrigation hose 28 1990
 
Drip Irrigation Systems, Ltd. (1)
* 5324379 Method and apparatus for producing drip irrigation conduit 15 1993
 
Hydromatic Ltd. (1)
* 5282916 Method and apparatus for making drip irrigation devices 17 1992
 
Micro Irrigation Technologies, Inc. (1)
* 5688072 Agricultural drip tape 8 1995
 
Hydroplan Engineering Ltd. (3)
* 5022940 Process of making a drip irrigation conduit 55 1989
* 5122044 Apparatus for making a drip irrigation conduit 12 1990
* 5324371 Process for producing a drip irrigation conduit 24 1993
 
Seisan Nippon Sha, Ltd. (1)
* 4555282 Method of and means for bonding synthetic resin profiled fasteners to film substrate 67 1983
 
T-Systems International, Inc. (6)
* 5282578 Self-protecting irrigation hose and method 22 1993
* 5333793 Drip irrigation hose with pressure compensation and method for its manufacture 16 1993
* 5458712 Process for forming drip irrigation hose with pressure compensation 12 1994
* 5522551 Drip irrigation hose and method for its manufacture 19 1994
* 5634595 Drip irrigation hose and method for its manufacture 12 1996
* 5722601 Drip irrigation hose and method of its manufacture 11 1996
 
ROBERTS IRRIGATION PRODUCTS, INC. (4)
* 4722759 Apparatus for fabricating drip irrigation tape 27 1985
* 5246171 Drip irrigation tape including a series of alternately offset elongated chambers 13 1992
* 5318657 Drip irrigation tape and method of manufacture 16 1993
* 5387307 Drip irrigation tape and method of manufacture 11 1994
 
MONSANTO COMPANY (1)
* 4323533 Rotary forming of articles 30 1980
 
Agrifim Irrigation International N.V. (1)
* 4702787 Process for making drip irrigation lines 13 1983
 
NAAN IRRIGATION SYSTEMS (1)
* 5271786 Method and apparatus for producing pipes for drip irrigation 24 1991
 
Townsend Controls Pty. Ltd. (1)
* 5076498 Irrigation tape and method of producing same 8 1989
 
PLASTRO IRRIGATION SYSTEMS LTD. (1)
* 5163622 Drip irrigation line and method of making same 20 1990
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
GENERAL ELECTRIC COMPANY (2)
* 7966889 Method of measuring strain in a flex hose or other flexible member 0 2008
* 2009/0314,097 Method of measuring strain in a flex hose or other flexible member 6 2008
 
Other [Check patent profile for assignment information] (2)
* 8746237 Solar collector (embodiments) and a method for producing a solar collector enclosure 0 2007
* 2011/0283,994 SOLAR COLLECTOR (EMBODIMENTS) AND A METHOD FOR PRODUCING A SOLAR COLLECTOR ENCLOSURE 0 2007
 
RAIN BIRD CORPORATION (3)
8302887 Drip emitter 3 2006
9743595 Drip emitter 0 2009
9485923 Elastomeric emitter and methods relating to same 0 2012
 
THE MACHINES YVONAND S.A. (1)
* 9192108 Method for producing drip irrigation tubes 2 2012
 
NELSON IRRIGATION CORPORATION (3)
* 6382530 Pressure compensating drip tape 16 2000
6620278 Drip tape manufacturing process 3 2000
* 2005/0258,279 Pressure compensating drip tape and related method 7 2004
 
THE TORO COMPANY (6)
6736337 Pressure compensating drip irrigation hose 13 2002
* 6568607 Emitter 18 2002
7887664 Continuous molded emitter 3 2003
* 2005/0284,966 Emitter 12 2004
8469294 Continuous molded emitter 2 2007
* 2007/0175,580 Continuous molded emitter 1 2007
 
D.R.T.S. ENTERPRISES (1)
* 2004/0018,263 Apparatus useful for continuous forming of thermoplastic material and method for use thereof 2 2002
 
USGI Medical, Inc. (4)
* 7520950 Flexible tubular liner coating system 8 2005
* 2007/0079,924 Flexible tubular liner coating system 69 2005
8016750 Flexible tubular liner coating system 1 2009
* 2009/0209,814 FLEXIBLE TUBULAR LINER COATING SYSTEM 0 2009
* Cited By Examiner