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US 6,386,424 B1Granted
Apparatus for making roof flashing units and method of making the units
OwnerGeorge M. Goettlinventor
Life of this patent
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Abstract
Ultrasonic welding apparatus is used for making roof flashing units. The roof flashing unites typically include a generally flat aluminum plate and a cylindrical aluminum element joined to the generally flat plate. Two ultrasonic welders are used to make the roof flashing unit, including a horizontally disposed ultrasonic welder for the cylindrical element and a horizontally disposed ultrasonic welder for joining the cylindrical unit to the generally flat plate.
Claims14
A method for ultrasonically welding roof flashing unit comprising in combination:
- providing a first plate;
- punching a center hole in the first plate;
- drawing a portion of the first plate upwardly about the punched center hole;
- providing a second plate;
- curving the second plate into a generally cylindrical configuration including an overlap area;
- providing a first ultrasonic welding unit;
- ultrasonically welding the curved second plate in the overlap area to secure the pipe to the first plate to provide a roof flashing unit.
4 more elements
Apparatus for ultrasonically welding roof flashing units comprising in combination:
- a first ultrasonic welding means including a first anvil against which a rolled pipe is disposed and a first welding unit having a horn for ultrasonically welding the rolled pipe;
- sleeve means disposed adjacent to the first anvil for holding the rolled pipe as the pipe is ultrasonically welded;
- and
- a second ultrasonic welding means, including a second anvil against which the welded pipe and a base element are disposed and a second welding unit for ultrasonically welding the welded pipe to the base element.
1 more element
Dependencies are inferred from the claim text.