US4074501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of securing a sealing layer to a support
Assignee: Individual
•
Filing: 1976-04-20
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Granted: 1978-02-21
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Expires: 1996-04-20
Abstract
Abstract A method of making a flat, or nearly flat roof watertight by covering the roof with a sealing layer, particularly a polyvinyl chloride sheet, and securing the sheet to the underlying structure by a number of plates and screws or nails passing through the plates. To provide a watertight and durable joint between the polyvinyl sheet and the plate, a bonding agent is applied on the sheet on the intended points of securement of the plates, and a seal is provided between the screw or nail head and the plate.
Inventors
- 👤 Sune Allan Sandqvist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:09
CPC Classifications
E; E04; E04D; E04D5/00; E04D5/14; E04D5/141; E04D5/143; E04D3/00; E04D3/36; E04D3/3601; E04D3/3603; E04D5/144; E04D5/145; F; F16; F16B; F16B33/00; F16B33/004; F16B43/00; F16B43/001; Y; Y10; Y10S; Y10S411/00; Y10S411/923
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
175 words
An improved method of securing a sheet-like sealing layer to a springy underlying support, using elastic plates each having an aperture therethrough and elongate fastening means having a head and dimensioned to pass through a plate aperture up to the head and penetrate into said support for fastening the plate thereto, comprising: (a) disposing said sealing layer on said support; (b) applying a bonding agent on top of said sealing layer on the intended areas of securement of said plates; (c) inserting ones of said fastening means through respective ones of said plates and pressing said plates against said sealing layer at the areas at which the bonding agent was applied for compressing the springy underlying support beneath said plates and securing said plates to the springy underlying support with said fastening means, and for securely joining said plates to said sealing layer by means of said bonding agent; and (d) bonding the heads of said fastening means to said plates for preventing relative movement between said plates and said heads of said fastening means.
Claim 2
Dependent Claim
175 words
An improved method of securing a sheet-like sealing layer to a springy underlying support, using elastic plates each having an aperture therethrough and elongate fastening means having a head and dimensioned to pass through a plate aperture up to the head and penetrate into said support for fastening the plate thereto, comprising: (a) disposing said sealing layer on said support; (b) applying a bonding agent on top of said sealing layer on the intended areas of securement of said plates; (c) inserting ones of said fastening means through respective ones of said plates and pressing said plates against said sealing layer at the areas at which the bonding agent was applied for compressing the springy underlying support beneath said plates and securing said plates to the springy underlying support with said fastening means, and for securely joining said plates to said sealing layer by means of said bonding agent; and (d) bonding the heads of said fastening means to said plates for preventing relative movement between said plates and said heads of said fastening means.
Claim 3
Dependent Claim
17 words
An improved method as claimed in claim 1, wherein said plates are made from plastics-coated sheet metal.
Claim 4
Dependent Claim
33 words
An improved method as claimed in claim 1, further comprising applying a hardenable sealing compound along the peripheral edges of said plates at said sheet-like sealing layer for effecting a weather-proof seal therebetween.
Claim 5
Dependent Claim
50 words
An improved method as claimed in claim 1, wherein bonding the heads of said fastening means comprises applying a hardenable sealing compound on top of the heads of said fastening means and on said plates immediately adjacent the respective heads of said fastening means to form a hardened seal thereat.
Claim 6
Dependent Claim
39 words
An improved method as claimed in claim 1, comprising using a sheet of polyvinyl chloride as said sealing layer, a semi-rigid polyvinyl chloride as the material of said plates, and using a liquid polyvinyl chloride as said bonding agent.
Claim 7
Dependent Claim
63 words
An improved method as claimed in claim 1, wherein the aperture formed in each of said plates for passage therethrough of said fastening means includes a recess for receiving said head of said fastening means, and wherein said fastening means is driven suffiently far into said support that the peripheral edges of said head of said fastening means are received within said recess.
Claim 8
Dependent Claim
50 words
An improved method as claimed in claim 1, wherein said plates include flanges extending about each plate aperture, said flanges dimensioned to form a seal about said head of said fastening means while converging towards the center of said plate when said fastening means are completely driven into said support.
Claim 9
Dependent Claim
29 words
An improved method as claimed in claim 7, comprising using a fastening means having a head diameter which somewhat exceeds the diameter of said aperture formed in said plate.
Claim 10
Independent Claim
212 words
A method of securing a sheet-like cover to a surface of a springy support, comprising: (a) spreading out the sheet-like cover on the surface of the springy support so that the support surface is underlying a bottom of the sheet-like cover; (b) applying a bonding agent between the top of the sheet-like cover and a bottom surface of a plate-like member with the plate-like member lying on top of the sheet-like cover, wherein the plate-like member has an aperture therethrough with an enlarged recess portion at a top surface of the plate-like member; (c) compressing said springy support beneath the plate-like member; (d) securing the plate-like member to the support while the support is compressed with a fastener of the type having a narrow elongated body portion and an enlarged head portion by inserting the fastener body portion through the plate-like member aperture and into the support to a sufficiency depth so that the fastener head portion bears against the recess bottom and is completely received therein; and (e) bonding the fastener head portion in the recess with a hardenable sealing compound to form a hardened plug within the recess which is effective to prevent relative movement between the fastener head portion and the plate-like member upon flexure of said springy support.
Claim 11
Independent Claim
212 words
A method of securing a sheet-like cover to a surface of a springy support, comprising: (a) spreading out the sheet-like cover on the surface of the springy support so that the support surface is underlying a bottom of the sheet-like cover; (b) applying a bonding agent between the top of the sheet-like cover and a bottom surface of a plate-like member with the plate-like member lying on top of the sheet-like cover, wherein the plate-like member has an aperture therethrough with an enlarged recess portion at a top surface of the plate-like member; (c) compressing said springy support beneath the plate-like member; (d) securing the plate-like member to the support while the support is compressed with a fastener of the type having a narrow elongated body portion and an enlarged head portion by inserting the fastener body portion through the plate-like member aperture and into the support to a sufficiency depth so that the fastener head portion bears against the recess bottom and is completely received therein; and (e) bonding the fastener head portion in the recess with a hardenable sealing compound to form a hardened plug within the recess which is effective to prevent relative movement between the fastener head portion and the plate-like member upon flexure of said springy support.
Claim 12
Dependent Claim
53 words
A method according to claim 9, wherein said recess includes an inner annular stepped portion for engaging the head portion of the fastener when the fastener head portion is at the bottom of the recess whereby upward movement of the fastener relative to the plate-like member is prevented by the annular stepped portion.
Claim 13
Dependent Claim
84 words
A method according to claim 11, wherein the plate-like member includes an annular resilient flange defining therein the recess for receiving the fastener head portion, and wherein a diameter of the recess defined by the flange is slightly less than a diameter of the fastener head portion so that insertion of the fastener head portion into the recess is effective to flex the flange which thereby engages the fastener head portion to prevent relative displacement between the plate-like member and the fastener head portion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |