Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...
Patent
1995-09-06
1998-02-24
Berman, Susan W.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Compositions to be polymerized by wave energy wherein said...
522 3, 522 71, 522 81, 522 83, 522 84, 522170, 522172, 522173, 522174, 522184, 528 10, 528 44, 528 86, 528373, 528403, 528421, 528422, C08J 328, C08J 508, C08J 524
Patent
active
057212864
ABSTRACT:
A method for curing polymers (11) incorporating a variable frequency microwave furnace system (10) designed to allow modulation of the frequency of the microwaves introduced into a furnace cavity (34). By varying the frequency of the microwave signal, non-uniformities within the cavity (34) are minimized, thereby achieving a more uniform cure throughout the workpiece (36). A directional coupler (24) is provided for detecting the direction of a signal and further directing the signal depending on the detected direction. A first power meter (30) is provided for measuring the power delivered to the microwave furnace (32). A second power meter (26) detects the magnitude of reflected power. The furnace cavity (34) may be adapted to be used to cure materials defining a continuous sheet or which require compressive forces during curing.
REFERENCES:
patent: 3611135 (1971-10-01), Margerum
patent: 3619252 (1971-11-01), Roscher
patent: 4144468 (1979-03-01), Mourier
patent: 4196332 (1980-04-01), MacKay et al.
patent: 4340796 (1982-07-01), Yamaguchi et al.
patent: 4415789 (1983-11-01), Nobue et al.
patent: 4504718 (1985-03-01), Okatsuka et al.
patent: 4593167 (1986-06-01), Nilssen
patent: 4777336 (1988-10-01), Asmussen
patent: 4825028 (1989-04-01), Smith
patent: 4843202 (1989-06-01), Smith
patent: 4866344 (1989-09-01), Rose et al.
patent: 4939331 (1990-07-01), Berggren et al.
patent: 5241040 (1993-08-01), Cuomo et al.
patent: 5296271 (1994-03-01), Swirbel et al.
patent: 5317081 (1994-05-01), Gelorme et al.
patent: 5321222 (1994-06-01), Bible et al.
MacKay, B, A., et al., "Frequency Agile Sources for Microwave Ovens", Journal of Microwave Power, vol. 14(1), 1979, pp. 63-76.
Swain, B., "Microwave Sintering of Ceramics", Advanced Materials & Processes Incorporating Metal Progress, Sep., 1988, reprinted.
Gewartowski, J.W., "Traveling-Wave Tube", McGraw-Hill Encyclopedia of Science and Technology, vol. 18, 16th Edition, 1987, pp. 509-511.
El-Sayed, E.M., et al., "Use of Sheath Helix Slow-Wave Structure as an Applicator in Microwave Heating Systems", Journal of Microwave Power, 16(3&4), 1981, pp. 283-288.
Lewis, D.A., et al., "Accelerated Imidization Reactions Using Microwave Radiation", J. Polymer Sci.: Part A: Polymer Chem., vol. 30, 1992, pp. 1647-1653.
Lauf, R.J., et al., Polymer Curing in a Variable Frequency Microwave Oven, 28th Microwave Power Symposium, Montreal, Canada, Jul. 12-14, 1993.
Bible Don W.
Lauf Robert J.
Paulauskas Felix L.
Berman Susan W.
Cutler Jeffrey N.
Lockheed Martin Energy Systems, Inc.
LandOfFree
Method for curing polymers using variable-frequency microwave he does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for curing polymers using variable-frequency microwave he, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for curing polymers using variable-frequency microwave he will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1875750