Patent Blog
  • Our Services

TODAY’S PATENT- ROOF DRAIN ASSEMBLY

  • Older
  • Newer

TODAY’S PATENT- ROOF DRAIN ASSEMBLY

Today’s patent was invented by Robert W. Mason and Harvey C. Roberston on July 26, 1988, bearing patent no. US4759163A.

The present invention relates to the roof drain assembly. It comprises a roof structure that has an open therethrough with a drainage duct extending downwardly through the opening, and a re-roofing structure which includes a layer of insulation and which is disposed over the existing roof structure with an opening through the re-roofing structure in alignment with the opening through the existing roof structure. A drain extension pipe extends through the opening in the re-roofing structure and into the upper-end portion of the drainage duct.

The portion of the drain extension pipe within the drainage duct is of a non-resiliently deformable material like lead, and this non-resiliently deformable portion of the drain extension pipe is outwardly mechanically deformed against the drainage duct to provide a substantially water-tight seal therebetween. In use, an outer tube to which the upper plate is secured is prevented from turning, And an inner shaft which is screw-threadedly disposed through the upper plate and on the lower end of which the lower plate is mounted is turned in the appropriate direction to cause the lower plate to move towards the upper plate with resultant axial compression and outward expansion of the resiliently deformable annulus against the non-resiliently deformable portion of the drain extension pipe.

  • Categories
    Today's Patent
  • Author

    Ishita Goyal

[boomdevs_toc]

Get Monthly

Global IP Updates

Join our community of over 10,000 subscribers and receive monthly updates on the latest IPR news and changes from around the globe.

Leave a Reply Cancel Reply

Your email address will not be published. Required fields are marked *

Related Posts

TODAY’S PATENT – MODULATION OF NK CELL ANTIGEN SPECIFIC EFFECTOR ACTIVITY BY MODULATION OF CXCR6 (CD186)

TODAYS PATENT- CELL PHONE CASE

TODAY’S PATENT – RUCKSACK WITH INTEGRATED ROLLING AND TRACTION SYSTEM

Lex Protector

International Law Office

🇺🇸 +1 888 890 6411

Ip Enforcement

Copyright Registration

Subscribe

© Copyright 2020. All rights Reserved

Contribute

Recommend

    Subscribe