US4700512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corner flashing membrane
Assignee: Individual
•
Filing: 1986-07-21
•
Granted: 1987-10-20
•
Expires: 2006-07-21
Abstract
Abstract A flexible, one-piece membrane is provided for inside or outside corners at building foundations, shelf angles, and roofs. The membrane includes a central vertical section that wraps around the corner, a top planar section that extends rearwardly into the corner, and a bottom planar section that extends forwardly upon the building foundation, shelf angle, or roof. The membrane is preferably made of plastic film, for example polyvinylchloride, and is particularly suited for use in masonry construction.
Inventors
- 👤 Walter A. Laska
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:24
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/14; E04D13/1407; E04B; E04B1/00; E04B1/0007
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
146 words
A reversible and foldable flashing membrane for interior masonry corner structures formed by two substantially vertical meeting walls abutting a horizontal structural member, the flashing membrane comprising: a central section adapted to wrap around the vertical sides of the corner formed by the meeting walls, the central section having a top edge and a bottom edge; a planar top section connected to the top edge of the central section and extending rearwardly and substantially horizontally into the corner formed by the meeting walls; and a planar bottom section connected to the bottom edge of the central section and extending forwardly and substantially horizontally upon the horizontal structural member; said membrane being sufficiently flexible with no perepheral stiffening so as to be reversibly adaptable to sealing both outside and inside masonry corners, and so as to be foldable along a longitudinal center line to a planar configuration.
Claim 2
Dependent Claim
146 words
A reversible and foldable flashing membrane for interior masonry corner structures formed by two substantially vertical meeting walls abutting a horizontal structural member, the flashing membrane comprising: a central section adapted to wrap around the vertical sides of the corner formed by the meeting walls, the central section having a top edge and a bottom edge; a planar top section connected to the top edge of the central section and extending rearwardly and substantially horizontally into the corner formed by the meeting walls; and a planar bottom section connected to the bottom edge of the central section and extending forwardly and substantially horizontally upon the horizontal structural member; said membrane being sufficiently flexible with no perepheral stiffening so as to be reversibly adaptable to sealing both outside and inside masonry corners, and so as to be foldable along a longitudinal center line to a planar configuration.
Claim 3
Dependent Claim
16 words
The flashing membrane of claim 1 in which the horizontal structural member is a masonry foundation.
Claim 4
Dependent Claim
16 words
The flashing membrane of claim 1 in which the horizontal structural member is a shelf angle.
Claim 5
Dependent Claim
16 words
The flashing membrane of claim 1 in which the horizontal structural member is a roof structure.
Claim 6
Dependent Claim
15 words
The flashing membrane of claim 1 in which the membrane is a plastic film membrane.
Claim 7
Dependent Claim
14 words
The flashing membrane of claim 5 in which the plastic film is polyvinylchloride film.
References Cited (Backward Citations)
US1379516A
Cited
US2165192A
Cited
US2685712A
Cited
US2851973A
Cited
US3247632A
Cited
US3304667A
Cited
US3442055A
Cited
GB1441920A
Cited
US4176504A
Cited
DE2951275A1
Cited
US4485600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-19 | 1991-04-20 | 1991-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-19 | 1995-04-20 | 1995-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-19 | 1999-04-20 | 1999-10-20 | $7700.00 | Window Closed / Lapsed |