Through-roof fittings

• US 5,647,178 A
• Filed: 09/28/1995
• Issued: 07/15/1997
• Est. Priority Date: 09/28/1995
• Status: Expired due to Term

• Current Assignee: Roger M. Cline
• Original Assignee: Roger M. Cline
• Inventors: Cline, Roger M.
• Primary Examiner(s): Arola, Dave W.
• Application Number:
  US08/535,381
• Time in Patent Office: 656 Days
• Field of Search: 285/42, 285/43, 285/44, 285/205, 52/198, 52/199, 52/200, 52/218, 52/219
• US Class Current: 52/219
• CPC Class Codes: E04D 13/1476 wherein the parts extending above the roof have a generally circular cross-section

Abstract

A through-roof fitting seals a stack with a boot and seals the boot with a gasket around an opening in a sheet roofing created to receive the stack or pipe. An elliptical opening is cut in the roofing sheet. A base plate is placed below the sheet with a central raised portion of the plate extending through the opening cut in the roofing sheet. A flange on the base plate extends outwardly beneath the roofing sheet around the opening. A clamping plate is embedded in a combined boot and gasket so that the gasket extends over the roofing sheet around the opening when an elliptical step in the clamping plate is aligned with the projecting central portion of the base plate. The boot has successively inwardly stepped elliptical portions which terminate in a sloped top with a central opening for receiving and tightly engaging and sealing the pipe or stack. The embedded clamping plate has fastener openings which align with fastener receivers in the base plate. Bosses surrounding the openings extend through the boot to abut heads of elongated fastener bolts which thread into nuts which are pressfit into the fastener receivers in the flange plate. Tightening the fasteners compresses the gasket, sealing the opening in the roofing sheet.

Claims

1. A through-roof fitting for surrounding and sealing a pipe or stack where it extends through a roof, comprising a base plate having a generally oval laterally extended base flange and a generally oval base body extending upward from the base flange for extending the body through a complementary general oval opening in a roofing sheet, and positioning the base flange under the roof around the opening, first fasteners secured in the base body and accessible generally perpendicular to the flange, a clamp plate having a generally oval clamp flange for cooperating with the base flange and having a generally oval clamp body for overlying the base plate body, openings in the clamp body aligned with the first fasteners in the base plate body for receiving fasteners, a molded boot having a boot base for overlying and surrounding the clamp body, the boot base having openings aligned with the openings in the clamp body for receiving fasteners, an integrally formed generally oval boot sleeve connected to an inward edge of the boot base, the sleeve having a relatively long sloping wall at one end of the oval boot base, and a relatively short sloping wall at the other end of the oval boot base, and having a sloping circular boss connected to a top of the boot sleeve, and a large circular opening in the boss for receiving a pipe or stack, a plurality of second complementary fasteners for connecting to the first fasteners, a sealing gasket provided between the clamp flange and the roofing sheet for compressing against the roofing sheet when the first fasteners and second fasteners are joined and tightened, for sealing and preventing leakage around the roofing sheet opening.

2. The apparatus of claim 1, wherein the gasket is integrally formed with the molded boot.

3. The apparatus of claim 2, wherein the clamp plate is embedded within the boot.

4. The apparatus of claim 1, wherein the clamp plate is integrally molded as a core within the boot.

5. The apparatus of claim 1, wherein the first fasteners comprise nuts captured in the openings of the base plate body, and wherein the second fasteners comprise bolts extending through the openings in the clamp body.

6. The apparatus of claim 5, wherein the clamp body comprises bosses surrounding the openings and extending upward through the boot base, and wherein the bolts comprise heads bearing against the bosses.

7. The apparatus of claim 5, wherein the nuts are pressed into the openings within the base plate body.

8. The apparatus of claim 7, wherein the openings in the base plate body are hexagonal and are tapered from relatively wide openings at the base to relatively narrow openings at a top of the flange plate body, and wherein the nuts are pressed into the openings from the bottom of the flange plate body.

9. A through-fitting for a metal roofing, comprising a base plate with a raised central portion having an inner wall for spacing around a stack or pipe extending through a roof, and having an outer wall for positioning around an opening in roofing, a flange extending outward from a lower edge of the outer wall of the central portion for underlying a metal roofing adjacent the opening formed in the metal roofing, the central portion and the flange having generally elliptical shapes, and the central portion having perpendicular openings for receiving first fasteners, an oval gasket overlying the roofing around the opening in the roofing and around the central portion of the flange plate which projects through the opening, a clamp plate having a generally elliptical shape with a clamp flange extending over the gasket, and a central portion for positioning above the central portion of the base plate, an internal annular step between the flange and central portion of the clamp plate for aligning with an upper part of the outer wall of the central portion of the flange plate for aligning the central portions of the clamp plate and base plate, multiple openings in the central portion of the clamp plate aligned with the openings in the base plate for receiving complementary second fasteners for connection to the first fasteners, a boot connected to the clamp plate and extending upward and inward therefrom, and a large circular opening in the boot for receiving and sealing a stack or pipe and a plurality of first and second complementary fasteners interconnecting the flange plate and clamp plate for clamping the clamp plate on the flange plate and compressing the gasket and sealing the opening in the roof.

10. The apparatus of claim 9, wherein the gasket is integrally formed with the molded boot.

11. The apparatus of claim 10, wherein the clamp plate is embedded within the boot.

12. The apparatus of claim 9, wherein the clamp plate is integrally molded as a core within the boot.

13. The apparatus of claim 9, wherein the first fasteners comprise nuts captured in the openings of the base plate body, and wherein the second fasteners comprise bolts extending through the openings in the clamp body.

14. The apparatus of claim 13, wherein the clamp body comprises bosses surrounding the openings and extending upward through the boot base, and wherein the bolts comprise heads bearing against the bosses.

15. The apparatus of claim 9, wherein the nuts are pressed into the openings within the base plate body.

16. The apparatus of claim 15, wherein the openings in the base plate body are hexagonal and are tapered from relatively wide openings at the base to relatively narrow openings at a top of the flange plate body, and wherein the nuts are pressed into the openings from the bottom of the flange plate body.

17. A method for sealing a through-roof fitting in a metal roofing, comprising an elliptical opening in the metal roofing, placing a base plate under the metal roofing and extending a central portion of the base plate through the roof opening while positioning a flange of the base plate under the roofing around the roofing opening, fixing first fasteners in the central portion of the base plate, placing a gasket around the central portion of the base plate and over the roofing around the opening, placing a clamp plate over the central portion of the base plate and over the gasket by aligning a central portion of the clamp plate with the protruding central portion of the base plate and by aligning a flange on the clamp plate over the gasket, connecting a boot to the gasket and passing a pipe or stack through a central opening in the boot and sealing the central opening around the pipe or stack, inserting second complementary fasteners through openings in the central portion of the clamp plate and connecting the first and second complementary fasteners, tightening the first and second complementary fasteners thereby compressing the gasket against the roofing around the opening and sealing the roofing opening with the gasket.