Multipass induction heating for thermoplastic welding

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5486684
SERIAL NO

08367546

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

An induction coil is passed over an interface between two resinous parts to be welded and an alternating magnetic field generated by the coil induces eddy currents in a foraminous susceptor positioned in the interface between the two parts. Pressure is applied to squeeze the two parts together while the induction heating of the susceptor raises the temperature of the resin in the faying surfaces of the two parts to the softening temperature so that resin flows through the interstices in the susceptor and bonds the two parts together. The induction heating and pressure application passes are repeated four or more times, increasing the power to the induction coil in the later passes to increase the heat input. The strength and continuity of the weld improves with each pass, although the incremental improvement diminishes after about four passes.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
THE BOEING COMPANYCHICAGO, IL9646

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Peterson, Todd R Federal Way, WA 10 46
Walker, Michael A Sumner, WA 102 3309

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 4416713 Method and apparatus for joining abutting edges of sheet material 86 1980
 
TEIJIN SEIKI CO., LTD. (1)
* 4822972 Bearing cooling apparatus of heating roller 40 1987
 
Sulzer-Escher Wyss GmbH (1)
* 5074019 Roll with induction heating arrangement 61 1989
 
The United States of America as represented by the Administrator of the National Aeronautics and Space Administration (1)
* 4521659 Induction heating gun 86 1983
 
Energy Development Associates, Inc. (2)
* 4343982 Method of joining metal to graphite by spot welding 39 1981
* 4382113 Method for joining graphite to graphite 48 1981
 
EDISON WELDING INSTITUTE (1)
* 5313034 Thermoplastic welding 84 1992
 
SUMITOMO ELECTRIC INDUSTRIES, LTD. (1)
* 4947464 Heating coil assembly for an electromagnetic induction cooking assembly 36 1988
 
MURATA MANUFACTURING CO., LTD. (1)
* 5199791 Temperature sensor 46 1991
 
HYDRO-QUEBEC (1)
* 5101086 Electromagnetic inductor with ferrite core for heating electrically conducting material 96 1990
 
HITACHI, LTD. (1)
* 4904972 Gas-insulated stationary induction electrical apparatus 45 1989
 
TETRA PAK HOLDINGS S.A. (1)
* 5001319 Arrangement for continuous induction welding 45 1990
 
The Boeing Company (3)
* 4355222 Induction heater and apparatus for use with stud mounted hot melt fasteners 99 1981
* 4673450 Method of welding together graphite fiber reinforced thermoplastic laminates 46 1985
* 5313037 High power induction work coil for small strip susceptors 62 1991
 
GLACIER GARLOCK BEARINGS, INC. (1)
* 4421588 Plastics alloy compositions 61 1982
 
Rolls-Royce Limited (1)
* 4445951 Method of manufacturing composite materials 67 1982
 
Measurex Corporation (2)
* 4768433 Hot air calender roll controller 43 1985
* 4653396 Recirculating air calender roll controller 47 1985
 
AJAX TOCCO MAGNETHERMIC CORPORATION (2)
* 4897518 Method of monitoring induction heating cycle 65 1988
* 5250776 Apparatus and method of measuring temperature 46 1991
 
EDUARD KUSTERS MASCHINENFABRIK GMBH & CO. KG (2)
* 5079817 Apparatus for controlling the heating and cooling of a roll 44 1989
* 5283409 Coil body for the inductive heating of rollers 38 1992
 
Northrop Corporation (1)
* 4978825 Thermoplastic composite induction welder 50 1989
 
VALMET PAPER MACHINERY, INC. (1)
* 4919759 Control of detachment of a paper web from a roll using heat 39 1988
 
WST Power Electronics, Inc. (1)
* 4791260 Induction type electrical wire preheater 34 1987
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
* 4296295 Induction heating coil 46 1980
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
OMG, INC. (1)
7141768 Fastening device 9 2001
 
The Boeing Company (11)
* 5660669 Thermoplastic welding 15 1994
* 5710412 Fluid tooling for thermoplastic welding 6 1995
* 5756973 Barbed susceptor for improviing pulloff strength in welded thermoplastic composite structures 11 1995
* 5688426 Hybrid metal webbed composite beam 35 1995
* 5760379 Monitoring the bond line temperature in thermoplastic welds 22 1995
* 5705796 Reinforced composites formed using induction thermoplastic welding 12 1996
* 5902935 Nondestructive evaluation of composite bonds, especially thermoplastic induction welds 30 1997
* 5833799 Articulated welding skate 2 1997
6613169 Thermoplastic rewelding process 9 1998
6284089 Thermoplastic seam welds 36 1998
6323468 Static coil apparatus and method for welding thermoplastic composite structures 13 2000
 
AIRBUS OPERATIONS GMBH (2)
8864077 Method for connecting a first material to a second material in aircraft construction 0 2008
* 2011/0284,691 Method for connecting a first material to a second material in aircraft construction 0 2008
 
APPLIED MATERIALS, INC. (2)
* 7566850 Method of hot wire welding of plastics 0 2006
* 2007/0034,623 METHOD OF HOT WIRE WELDING OF PLASTICS 0 2006
 
SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION (4)
7323666 Inductively heatable components 2 2003
7745355 Inductively heatable components 4 2007
8721823 Method of forming large diameter thermoplastic seal 0 2009
* 2010/0117,310 LARGE DIAMETER THERMOPLASTIC SEAL 3 2009
* Cited By Examiner