US4051609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making reusable writing board and the product thereof
Assignee: Individual
•
Filing: 1976-07-23
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Granted: 1977-10-04
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Expires: 1996-07-23
Abstract
Abstract A reusable writing board of "slate board" is both improved and of lower cost, avoiding use of the usual separate black-cardboard piece stapled to a backing. In a single printing operation, which is needed for face-printing anyway, the "slate" or background surface is provided on the same piece of paperboard. After further machine steps, a final operation of gluing and folding produces the finished slate board with a decoratively-printed head panel glued to extend down protectively over the top edge of the plastic work sheet covering the printed background. If desired, educational or informative discs can be rotatably secured under the head fold. Also, if desired, an air pocket can be formed under the head fold such that after writing by impressions through the work sheet, a sudden slap on the cover of the air pocket will raise the work sheet pneumatically to erase the writing.
Inventors
- 👤 Thomas P. Boursaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:52
CPC Classifications
B; B43; B43L; B43L1/00; B43L1/12; B43L1/123; B43L1/126
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
137 words
A reusable pressure-sensitive writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until reloosened, a contrast between the clinging area and the nonclinging area, characterized by being formed, except for its cover sheet means, essentially from a single sheet of cardboard folded and including a back portion, a flap folded forwardly therefrom and down thereover and including on the forward face thereof a printed background with a pressure-tacky surface; and including a second flap folded forwardly from the same back portion and adhered down thereover, with face-printing on its forward face and having an edge overlying the first flap to provide a protected area thereof; the cover sheet means being adhered to said cardboard under the said second flap.
Claim 2
Dependent Claim
137 words
A reusable pressure-sensitive writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until reloosened, a contrast between the clinging area and the nonclinging area, characterized by being formed, except for its cover sheet means, essentially from a single sheet of cardboard folded and including a back portion, a flap folded forwardly therefrom and down thereover and including on the forward face thereof a printed background with a pressure-tacky surface; and including a second flap folded forwardly from the same back portion and adhered down thereover, with face-printing on its forward face and having an edge overlying the first flap to provide a protected area thereof; the cover sheet means being adhered to said cardboard under the said second flap.
Claim 3
Dependent Claim
30 words
A reusable pressure-sensitive writing board according to claim 1, in which a stylus-containing packet protrudes through a slot in the second flap from between said flap and the back portion.
Claim 4
Dependent Claim
72 words
A reusable pressure-sensitive writing board according to claim 1, in which intermediate flap means separates the back portion and second flap in selected areas, and in other areas leaves an air pocket between the back portion and the second flap, with communication selectively between said pocket and the space between the cover sheet and the pressure-tacky background so that sharply depressing the second flap into said pocket pneumatically lifts the cover sheet.
Claim 5
Independent Claim
216 words
A method of making a pressure-sensitive reusable writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until loosened, a contrast between the clinging area and the nonclinging area, characterized by: performing by machine a series of steps including: a. printing on one face of a sheet of cardboard the background for the writing surface and in other areas such face-printing as is desired, providing a surface of the printed background adapted to cling as stated; b. die cutting a blank from said cardboard with fold lines prepared for folding two flaps from a common back piece; c. adhering a narrow portion of the cover sheet means to the cardboard in such position that the cover sheet means will lie over the background; d. folding a flap of said sheet over and down with said background on the outside face of the flap to face toward the front face of the folded sheet; e. folding a second flap, in the same direction, from a common base portion now forming the back, with face-printing exposed on this second flap; and adhering said second flap in folded-down position with an edge thereof extending over said narrow portion of the cover sheet.
Claim 6
Independent Claim
216 words
A method of making a pressure-sensitive reusable writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until loosened, a contrast between the clinging area and the nonclinging area, characterized by: performing by machine a series of steps including: a. printing on one face of a sheet of cardboard the background for the writing surface and in other areas such face-printing as is desired, providing a surface of the printed background adapted to cling as stated; b. die cutting a blank from said cardboard with fold lines prepared for folding two flaps from a common back piece; c. adhering a narrow portion of the cover sheet means to the cardboard in such position that the cover sheet means will lie over the background; d. folding a flap of said sheet over and down with said background on the outside face of the flap to face toward the front face of the folded sheet; e. folding a second flap, in the same direction, from a common base portion now forming the back, with face-printing exposed on this second flap; and adhering said second flap in folded-down position with an edge thereof extending over said narrow portion of the cover sheet.
Claim 7
Independent Claim
243 words
A method of making a pressure-sensitive reusable writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until loosened, a contrast between the clinging area and the nonclinging area, characterized by: performing by machine a series of steps including: a. printing on one face of a sheet of cardboard the background for the writing surface and in other areas such face-printing as is desired, providing a surface of the printed background adapted to cling as stated; b. die cutting a blank from said cardboard with fold lines prepared for folding two flaps from a common back piece and with flaps cut in one of said flaps for retaining a stylus, and an aperture cut in said back to lie behind said flaps after folding; c. adhering a narrow portion of the cover sheet means to the carboard in such position that the cover sheet means will lie over the background; d. folding a flap of said sheet over and down with said background on the outside face of the flap to face toward the front face of the folded sheet; e. folding a second flap, in the same direction, from a common base portion now forming the back, with face-printing exposed on this second flap; and ahering said second flap in folded-down position with an edge thereof extending over said narrow portion of the cover sheet.
Claim 8
Independent Claim
243 words
A method of making a pressure-sensitive reusable writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until loosened, a contrast between the clinging area and the nonclinging area, characterized by: performing by machine a series of steps including: a. printing on one face of a sheet of cardboard the background for the writing surface and in other areas such face-printing as is desired, providing a surface of the printed background adapted to cling as stated; b. die cutting a blank from said cardboard with fold lines prepared for folding two flaps from a common back piece and with flaps cut in one of said flaps for retaining a stylus, and an aperture cut in said back to lie behind said flaps after folding; c. adhering a narrow portion of the cover sheet means to the carboard in such position that the cover sheet means will lie over the background; d. folding a flap of said sheet over and down with said background on the outside face of the flap to face toward the front face of the folded sheet; e. folding a second flap, in the same direction, from a common base portion now forming the back, with face-printing exposed on this second flap; and ahering said second flap in folded-down position with an edge thereof extending over said narrow portion of the cover sheet.
Claim 9
Independent Claim
259 words
A method of making a pressure-sensitive reusable writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until loosened, a contrast between the clinging area and the nonclinging area, characterized by; performing by machine a series of steps including: a. printing on one face of a sheet of cardboard the background for the writing surface and in other areas such faceprinting as is desired, providing a surface of the printed background adapted to cling as stated; b. die cutting a blank from said carboard with fold lines prepared for folding two flaps from a common back piece and with flaps cut in one of said flaps for retaining a stylus, and an aperture cut in said back to lie behind said flaps after folding, and with an aperture cut straddling a fold line to form a finger-admitting notch when folded; c. adhering a narrow portion of the cover sheet means to the carboard in such position that the cover sheet means will lie over the background; d. folding a flap of said sheet over and down with said background on the outside face of the flap to face toward the front face of the folded sheet; e. folding a second flap, in the same direction, from a common base portion now forming the back, with face-printing exposed on this second flap; and adhering said second flap in folded-down position with an edge thereof extending over said narrow portion of the cover sheet.
Claim 10
Independent Claim
259 words
A method of making a pressure-sensitive reusable writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until loosened, a contrast between the clinging area and the nonclinging area, characterized by; performing by machine a series of steps including: a. printing on one face of a sheet of cardboard the background for the writing surface and in other areas such faceprinting as is desired, providing a surface of the printed background adapted to cling as stated; b. die cutting a blank from said carboard with fold lines prepared for folding two flaps from a common back piece and with flaps cut in one of said flaps for retaining a stylus, and an aperture cut in said back to lie behind said flaps after folding, and with an aperture cut straddling a fold line to form a finger-admitting notch when folded; c. adhering a narrow portion of the cover sheet means to the carboard in such position that the cover sheet means will lie over the background; d. folding a flap of said sheet over and down with said background on the outside face of the flap to face toward the front face of the folded sheet; e. folding a second flap, in the same direction, from a common base portion now forming the back, with face-printing exposed on this second flap; and adhering said second flap in folded-down position with an edge thereof extending over said narrow portion of the cover sheet.
Claim 11
Independent Claim
56 words
A method of making a pressure-sensitive reusable writing board of the type having cove sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereof and to then show, until loosened, a contrast between the clinging area and the nonclinging area, characterized by: performing by machine a series of steps including:
Claim 12
Independent Claim
56 words
A method of making a pressure-sensitive reusable writing board of the type having cove sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereof and to then show, until loosened, a contrast between the clinging area and the nonclinging area, characterized by: performing by machine a series of steps including:
Claim 13
Dependent Claim
140 words
a. printing on one clay-coated face of a sheet of cardboard for background for the writing surface and in other areas such face-printing as is desired, providing a surface of the printed background adapted to cling as stated; b. adhering a narrow portion of the cover sheet means to the cardboard in such position that the cover sheet means will lie over the background; c. folding a flap of said sheet over and down with said background on the outside face of the flap to face toward the front face of the folded sheet; d. folding a second flap, in the same direction, from a common base portion now forming the back, with face-printing exposed on this second flap; and adhering said second flap in folded-down position with and edge thereof extending over said narrow portion of the cover sheet.
Claim 14
Dependent Claim
140 words
a. printing on one clay-coated face of a sheet of cardboard for background for the writing surface and in other areas such face-printing as is desired, providing a surface of the printed background adapted to cling as stated; b. adhering a narrow portion of the cover sheet means to the cardboard in such position that the cover sheet means will lie over the background; c. folding a flap of said sheet over and down with said background on the outside face of the flap to face toward the front face of the folded sheet; d. folding a second flap, in the same direction, from a common base portion now forming the back, with face-printing exposed on this second flap; and adhering said second flap in folded-down position with and edge thereof extending over said narrow portion of the cover sheet.
Claim 15
Independent Claim
192 words
A method of making a pressure-sensitive reusable writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until loosened, a contrast between the clinging area and the nonclinging area, characterized by: performing by machine a series of steps including: a. printing on one face of a sheet of cardboard the background for the writing surface and in other areas such faceprinting as is desired; b. adhering a narrow portion of the cover sheet means to the cardboard in such position that the cover sheet means will lie over the background; c. selectively applying a wax coating to the background; d. folding a flap of said sheet over and down with said background on the outside face of the flap to face toward the front face of the folded sheet; e. folding a second flap, in the same direction, from a common base portion now forming the back, with face-printing exposed on this second flap; and adhering said second flap in folded-down position with an edge thereof extending over said narrow portion of the cover sheet.
Claim 16
Independent Claim
192 words
A method of making a pressure-sensitive reusable writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until loosened, a contrast between the clinging area and the nonclinging area, characterized by: performing by machine a series of steps including: a. printing on one face of a sheet of cardboard the background for the writing surface and in other areas such faceprinting as is desired; b. adhering a narrow portion of the cover sheet means to the cardboard in such position that the cover sheet means will lie over the background; c. selectively applying a wax coating to the background; d. folding a flap of said sheet over and down with said background on the outside face of the flap to face toward the front face of the folded sheet; e. folding a second flap, in the same direction, from a common base portion now forming the back, with face-printing exposed on this second flap; and adhering said second flap in folded-down position with an edge thereof extending over said narrow portion of the cover sheet.
Claim 17
Dependent Claim
141 words
A reusable pressure-sensitive writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until reloosened, a contrast between the clinging area and the nonclinging area, characterized by being formed, except for its cover sheet means, essentially from a single sheet of carboard folded and including a back portion, a flap folded forwardly therefrom and down thereover and including on the forward face thereof a clay-coated surface bearing a printed background with a pressure-tacky surface; and including a second flap folded forwardly from the same back portion and adhered down thereover, with face-printing on its forward face and having an edge overlying the first flap to provide a protected area thereof; the cover sheet means being adhered to said cardboard under the said second flap.
Claim 18
Dependent Claim
141 words
A reusable pressure-sensitive writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until reloosened, a contrast between the clinging area and the nonclinging area, characterized by being formed, except for its cover sheet means, essentially from a single sheet of carboard folded and including a back portion, a flap folded forwardly therefrom and down thereover and including on the forward face thereof a clay-coated surface bearing a printed background with a pressure-tacky surface; and including a second flap folded forwardly from the same back portion and adhered down thereover, with face-printing on its forward face and having an edge overlying the first flap to provide a protected area thereof; the cover sheet means being adhered to said cardboard under the said second flap.
Claim 19
Dependent Claim
154 words
A reusable pressure-sensitive writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until reloosened, a contrast between the clinging area and the nonclinging area, characterized by being formed, except for its cover sheet means, essentially from a single sheet of cardboard folded and including a back portion, a flap folded forwardly therefrom and down thereover and including on the forward face thereof a printed background with a pressure-tacky surface, and having its rear face area adhered to the backing, generally throughout the writing area, for stiffness; and including a second flap folded forwardly from the same back portion and adhered down thereover, with face-printing on its forward face and having an edge overlying the first flap to provide a protected area thereof; the cover sheet means being adhered to said cardboard under the said second flap.
Claim 20
Dependent Claim
154 words
A reusable pressure-sensitive writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until reloosened, a contrast between the clinging area and the nonclinging area, characterized by being formed, except for its cover sheet means, essentially from a single sheet of cardboard folded and including a back portion, a flap folded forwardly therefrom and down thereover and including on the forward face thereof a printed background with a pressure-tacky surface, and having its rear face area adhered to the backing, generally throughout the writing area, for stiffness; and including a second flap folded forwardly from the same back portion and adhered down thereover, with face-printing on its forward face and having an edge overlying the first flap to provide a protected area thereof; the cover sheet means being adhered to said cardboard under the said second flap.
Claim 21
Dependent Claim
38 words
A reusable pressure-sensitive writing board according to claim 10, in which some area of the facing surfaces between the back portion and the second flap is left unadhered and an element is shiftably located between said facing surfaces.
Claim 22
Dependent Claim
50 words
A reusable pressure-sensitive writing board according to claim 10, in which a stylus-containing packet protrudes through a slot in the second flap from between said flap and the back portion, said slot being T-shaped to permit the packet to be inserted by sliding in through the head of the T.
Claim 23
Independent Claim
175 words
A method of making a pressure-sensitive reusable writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until loosened, a contrast between the clinging area and the nonclinging area, characterized by printing on one face of a sheet of cardboard the background for the writing surface and in other areas such face-printing as is desired, providing a pressure-tacky surface for the printed background, adhering a narrow portion of the cover sheet means to the cardboard in such position that the cover sheet means will lie over the background; folding a flap of said sheet over and down with said background on the outside face of the flap toward the front face of the folded sheet; folding a second flap, in the same direction, from a common base portion now forming the back with face-printing thereon exposed, and adhering said second flap in folded-down position with an edge thereof extending over said narrow portion of the cover sheet means.
Claim 24
Independent Claim
175 words
A method of making a pressure-sensitive reusable writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until loosened, a contrast between the clinging area and the nonclinging area, characterized by printing on one face of a sheet of cardboard the background for the writing surface and in other areas such face-printing as is desired, providing a pressure-tacky surface for the printed background, adhering a narrow portion of the cover sheet means to the cardboard in such position that the cover sheet means will lie over the background; folding a flap of said sheet over and down with said background on the outside face of the flap toward the front face of the folded sheet; folding a second flap, in the same direction, from a common base portion now forming the back with face-printing thereon exposed, and adhering said second flap in folded-down position with an edge thereof extending over said narrow portion of the cover sheet means.
Claim 25
Independent Claim
195 words
A method of making a pressure-sensitive reusable writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until loosened, a contrast between the clinging area and the nonclinging area, characterized by: performing by machine a series of steps including: a. printing on one face of a sheet of cardboard the background for the writing surface and in other areas such face-printing as is desired, providing a surface of the printed background adapted to cling as stated; b. adhering a narrow portion of the cover sheet means to the cardboard in such position that the cover sheet means will lie over the background; c. folding a flap of said sheet over and down with said background on the outside face of the flap to face toward the front face of the folded sheet; d. folding a second flap, in the same direction, from a common base portion now forming the back, with face-printing exposed on this second flap; and adhering said second flap in folded-down position with an edge thereof extending over said narrow portion of the cover sheet.
Claim 26
Independent Claim
195 words
A method of making a pressure-sensitive reusable writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until loosened, a contrast between the clinging area and the nonclinging area, characterized by: performing by machine a series of steps including: a. printing on one face of a sheet of cardboard the background for the writing surface and in other areas such face-printing as is desired, providing a surface of the printed background adapted to cling as stated; b. adhering a narrow portion of the cover sheet means to the cardboard in such position that the cover sheet means will lie over the background; c. folding a flap of said sheet over and down with said background on the outside face of the flap to face toward the front face of the folded sheet; d. folding a second flap, in the same direction, from a common base portion now forming the back, with face-printing exposed on this second flap; and adhering said second flap in folded-down position with an edge thereof extending over said narrow portion of the cover sheet.
Claim 27
Dependent Claim
65 words
A reusable pressure-sensitive writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until reloosened, a contrast between the clinging area and the nonclinging area, characterized by having its background formed of a sheet of cardboard having a clay-coated surface bearing a printed background with a pressure-tacky surface.
Claim 28
Dependent Claim
65 words
A reusable pressure-sensitive writing board of the type having cover sheet means overlying a background, initially loosely, adapted to cling to the background where impressed thereon and to then show, until reloosened, a contrast between the clinging area and the nonclinging area, characterized by having its background formed of a sheet of cardboard having a clay-coated surface bearing a printed background with a pressure-tacky surface.
Claim 29
Dependent Claim
31 words
A reusable pressure-sensitive writing board according to claim 15 in which the printed background is printed as a multiplicity of dots in half-tone printing whereby color process printing can be used.
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) | 1980-10-03 | 1981-04-04 | 1981-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-03 | 1985-04-04 | 1985-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-03 | 1989-04-04 | 1989-10-04 | $7700.00 | Window Closed / Lapsed |