Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Automatic and/or material-triggered control
Patent
1986-12-12
1988-05-10
Massie, Jerome
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Automatic and/or material-triggered control
156 71, 156497, 156499, 156574, 156577, 156579, B44C 700
Patent
active
047433329
ABSTRACT:
A hot plate welding device designed specifically to apply asphalt membrane roofing material (hereafter referred to as material) without the use of an open flame. The device uses an electrically heated curved platen which heats the material as it is moved across and in contact with the heated platen. A cylindrical pressure roller applies pressure to the material to insure proper adhesion of the entire surface of the material to the roof structure. A variable speed motor is used as a drive motor for the device. This motor is interlocked with a sensor which senses the temperature of the material. If the material is not at proper temperature the device automatically slows down and waits for the material temperature to catch up to application temperature. The device is designed to have a low center of gravity which allows the device to be used on a roof of mild slope and where the device must fit under pipes and other obstacles commonly encountered when applying such roofing materials. The feed mechanism consists of two rollers one of which pivots such that they allow the material to be fed easily onto the heating platen from the surface of the roof while reducing the amount of friction caused by the device forcing itself between the roof and material. A steering mechanism allows the operator to guide the device and keep it in alignment with material.
REFERENCES:
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patent: 2709742 (1955-05-01), Perry
patent: 3189498 (1965-06-01), Rapp
patent: 3340125 (1967-09-01), Drenning et al.
patent: 4440588 (1984-04-01), Stevenson et al.
patent: 4447288 (1984-05-01), Seaman
patent: 4504352 (1985-03-01), Meyer
patent: 4533423 (1985-08-01), Johnson et al.
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