US3931384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making end frames for upholstered furniture
Assignee: Plexowood Inc
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Filing: 1972-10-02
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Granted: 1976-01-06
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Expires: 1992-10-02
Abstract
Abstract A method is provided by which end frames for upholstered furniture are pressure molded in one piece from a mixture of wood flakes and thermosetting resin. They have no grain, are equally strong in all directions, are denser than the wood from which the flakes are derived and permit tacking or stapling the upholstery in place. Simplified processes of forming right and left end frame assemblies are disclosed.
Inventors
- 👤 Larry J. Forquer
- 👤 Robert P. Habgood, Jr.
- 👤 John M. Rembold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:03
CPC Classifications
B; B27; B27N; B27N5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
249 words
The method of pressure molding a pair of right and left hand end frames each having a planar portion and a portion diverging from the planar portion comprising (a) filling with a mixture of wood flakes and resin the cavity of a pressure mold comprehending the planar portion of each said end frame and filling with the same mixture the cavity of an attached pressure mold portion comprehending the diverging portion, said pressure molds being sufficiently deep to accommodate the uncompressed mixture of wood flakes and resin required to form said end frame pre-forms, (b) compressing the mixture to produce a self-sustaining preform having the shape of the mold and its attached portion, removing the compressed pre-form from the mold, (c) detaching the mold portion comprehending the diverging portion and substituting therefore a mold portion comprehending the portion diverging in the opposite direction, (d) filling the cavity of the mold and its attached portion with a mixture of wood flakes and resin and compressing the mixture to produce a self-sustaining pre-form which is the mirror image of the pre-form first produced, (e) transferring each pre-form to a curing mold shaped to receive and support each pre-form including its diverging portion and (f) heating and pressing each pre-form to a density greater than that of the wood from which the flakes are derived so as to bond the wood flakes together with the resin in both the planar and diverging portions of each pre-form to form fully bonded end frames.
Claim 2
Independent Claim
249 words
The method of pressure molding a pair of right and left hand end frames each having a planar portion and a portion diverging from the planar portion comprising (a) filling with a mixture of wood flakes and resin the cavity of a pressure mold comprehending the planar portion of each said end frame and filling with the same mixture the cavity of an attached pressure mold portion comprehending the diverging portion, said pressure molds being sufficiently deep to accommodate the uncompressed mixture of wood flakes and resin required to form said end frame pre-forms, (b) compressing the mixture to produce a self-sustaining preform having the shape of the mold and its attached portion, removing the compressed pre-form from the mold, (c) detaching the mold portion comprehending the diverging portion and substituting therefore a mold portion comprehending the portion diverging in the opposite direction, (d) filling the cavity of the mold and its attached portion with a mixture of wood flakes and resin and compressing the mixture to produce a self-sustaining pre-form which is the mirror image of the pre-form first produced, (e) transferring each pre-form to a curing mold shaped to receive and support each pre-form including its diverging portion and (f) heating and pressing each pre-form to a density greater than that of the wood from which the flakes are derived so as to bond the wood flakes together with the resin in both the planar and diverging portions of each pre-form to form fully bonded end frames.
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) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |