US3984269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accelerated drywall joint treatment
Assignee: National Gypsum Co
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Filing: 1974-03-29
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Granted: 1976-10-05
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Expires: 1994-03-29
Abstract
Abstract In the application of a plurality of layers of a settable joint compound over a reinforcing tape, in drywall construction, a thin coat of Al 2 SO 4 is sprayed over the tape and the board edges prior to applying the first layer and over the top of each layer immediately after the layer is applied.
Inventors
- 👤 Joseph W. Schneller
- 👤 Richard E. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:50
CPC Classifications
E; E04; E04F; E04F21/00; E04B; E04B2/00; E04B2/74; E04B2/7407; E04B2/7453; E04B2/7457; E04F13/00; E04F13/02; E04F13/04; E04B2/72; E04B2/723; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/163; Y10T428/169
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
The method of treating joints in drywall construction comprising the steps of saturating a narrow reinforcing tape with a set accelerator for settable gypsum, adhering said narrow reinforcing tape over a joint between a pair of wallboards, coating a narrow area of the face of said pair of wallboards along each side of said joint between the said wallboards with a set accelerator for settable gypsum with said coating covering said tape, applying a thin layer of a joint compound having a settable gypsum binder over the area of said coating of set accelerator, and applying a second coating of said set accelerator over the top of said thin layer of joint compound, whereby said thin layer of joint compound hardens rapidly and subsequently steps in the erection of a finished wall therefrom may proceed substantially sooner thereafter.
Claim 2
Independent Claim
138 words
The method of treating joints in drywall construction comprising the steps of saturating a narrow reinforcing tape with a set accelerator for settable gypsum, adhering said narrow reinforcing tape over a joint between a pair of wallboards, coating a narrow area of the face of said pair of wallboards along each side of said joint between the said wallboards with a set accelerator for settable gypsum with said coating covering said tape, applying a thin layer of a joint compound having a settable gypsum binder over the area of said coating of set accelerator, and applying a second coating of said set accelerator over the top of said thin layer of joint compound, whereby said thin layer of joint compound hardens rapidly and subsequently steps in the erection of a finished wall therefrom may proceed substantially sooner thereafter.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-05 | 1980-04-05 | 1980-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-05 | 1984-04-05 | 1984-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-05 | 1988-04-05 | 1988-10-05 | $7700.00 | Window Closed / Lapsed |