Apparatus for joining roof covering materials

Electric resistance heating devices – Heating devices – Radiant heater

Reexamination Certificate

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Details

C156S497000

Reexamination Certificate

active

10549858

ABSTRACT:
An arrangement for an apparatus (1) for application of roof covering (2) and comprising a wagon (4) moveable by aid of wheels (3) intended to join together two unrolled rolls of roof covering in connection to a joint (5) on top of each other lying covering layers (6, 7) by aid of a hot air aggregate (8) supported by said wagon (4), which via a nozzle (9) blows hot gas into said joint (5) at the same time as the wagon (4) is moved forwards and at least one operating pressure roller (10) included in said wagon (4), which is intended to press together the covering layers (6, 7) lying on top of each other. The hot air aggregate (8) is turnably supported onto the one front outer portion (12) of said wagon (4) by aid of a hinge (11) having its nozzle (9) turnable inwards between those covering layers (6, 7), which shall be welded together and said operating pressure roller (10) is provided in the front, central portion (13) of the wagon (4) immediately after the nozzle (9) on the same when it is in its turned in, active position and which comprises a middle portion (14) having a smaller diameter than adjacent outer portions (15, 16) for achieving two application surfaces (17, 18) against a joint surface (19) in the joint at the same time as an extra pressure roller (20) is provided after or behind the operating pressure roller (10) intended only to act against that surface of the joint (5), which the first, operating pressure roller (10) has not treated.

REFERENCES:
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patent: 4737213 (1988-04-01), Paeglis et al.
patent: 4834828 (1989-05-01), Murphy
patent: 4855004 (1989-08-01), Chitjian
patent: 6149762 (2000-11-01), Kobzan
patent: 6187122 (2001-02-01), Hubbard et al.
patent: 6484781 (2002-11-01), Weaver
patent: 6533014 (2003-03-01), Rubenacker et al.
patent: 6536498 (2003-03-01), Srinivasan et al.
patent: 6537402 (2003-03-01), Pate et al.
patent: 6581663 (2003-06-01), Rubenacker et al.
patent: 6610159 (2003-08-01), Henegar
patent: 7043815 (2006-05-01), Lande et al.
patent: 2003/0019586 (2003-01-01), Henegar
patent: 2 960 8593 (1996-09-01), None
patent: WO 0029213 (2000-05-01), None

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