Patent US3926112A successfully refreshed from Google Patents.
US3926112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simplified silk screen printing device
Assignee: Individual
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Filing: 1973-08-06
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Granted: 1975-12-16
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Expires: 1993-08-06
Abstract
Abstract A silk screen printing machine comprises a base plate upon which a silk screen frame is pivotally mounted by means of a ''''living hinge'''' in the form of a transparent polypropylene sheet. The frame is pivotable between a printing position where it lies flat upon the base to a ready position where it is positioned away from the base. The transparent polypropylene sheet extends across the base in line with the frame opening. This permits a proof impression from the silk screen to be placed on the transparent sheet. A blank of the material to be imprinted is positioned under the transparent sheet for the purpose of registering the imprint. Then a guide tape outlining the blank is placed on top of the transparent sheet as a guide for subsequent placement of blanks on the transparent sheet. A porous cellular element receives ink and is guided for movement along the silk screen to force ink through the screen to the blank sheets of material to be imprinted.
Inventors
- 👤 Mary Neman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:23
CPC Classifications
B; B41; B41F; B41F15/00; B41F15/02; B41F15/14; B41F15/40; B41F15/42; B41F31/00; B41F31/24
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
141 words
Printing apparatus comprising: a base plate upon which a blank sheet is placed for receiving an imprint; a frame having at least one substantially straight edge and having an opening; a hinge comprising an elongated relatively thin elastic sheet secured along said edge of the frame and to said base plate whereby said frame is pivotally secured to said base for movement between a printing position in which said frame lies flat on said base and a ready position pivoted away from said base; a screen received in said opening, said screen means having porous portions defining a predetermined imprint pattern through which ink caN be forced to said blank sheet on said base plate when said frame is in said printing position, thereby causing said blank sheet to receive said imprint; and means for forcing ink through said screen means.
Claim 2
Dependent Claim
141 words
Printing apparatus comprising: a base plate upon which a blank sheet is placed for receiving an imprint; a frame having at least one substantially straight edge and having an opening; a hinge comprising an elongated relatively thin elastic sheet secured along said edge of the frame and to said base plate whereby said frame is pivotally secured to said base for movement between a printing position in which said frame lies flat on said base and a ready position pivoted away from said base; a screen received in said opening, said screen means having porous portions defining a predetermined imprint pattern through which ink caN be forced to said blank sheet on said base plate when said frame is in said printing position, thereby causing said blank sheet to receive said imprint; and means for forcing ink through said screen means.
Claim 3
Dependent Claim
60 words
Printing apparatus as in claim 1 wherein: the undistorted shape of said hinge is flat and is bent into a shape having a generally U-shaped cross section when said frame is pivoted to said printing position whereby said frame is resiliently biased toward said ready position; and means secured to said base plate to provide a stop for said frame.
Claim 4
Dependent Claim
132 words
Printing apparatus as in claim 2 and an inking device comprising: an operator-manipulated handle; a base removably attached to said handle, said base having a semicylindrical surface, a porous elongated ink-retaining element mounted on the semicylindrical surface of said base, an elongated slot at one end of said handle, a shaft positioned in said slot on an axis transverse to the direction of sweep of said device, and a complementary tab on said base, said tab being releasably retained in said slot and retaining said shaft therein; first and second guide rails mounted on opposite sides of said opening and positioned parallel to the direction of sweep of said inking device; flexible clips received over said guide rails, each clip having an opening for receiving one of the ends of said shaft.
Claim 5
Dependent Claim
12 words
Printing apparatus as in claim 1 wherein said elastic sheet is polypropylene.
Claim 6
Dependent Claim
30 words
Printing apparatus as in claim 1 further comprising a resilient transparent sheet lying flat on said base in registry with said opening when said frame is in the printing position.
Claim 7
Dependent Claim
16 words
Printing apparatus as in claim 5 wherein said transparent sheet is integral with said elastic sheet.
Claim 8
Dependent Claim
48 words
Printing apparatus as in claim 5 further comprising a guide releasably secured to the upper face of said transparent sheet in registration with said proof imprint, thereby permitting successive blank sheets to be positioned on the upper face of said transparent sheet in registration with said proof imprint.
Claim 9
Dependent Claim
20 words
Printing apparatus as in claim 6 wherein said guide comprises tape positioned on the upper face of said transparent sheet.
Claim 10
Dependent Claim
46 words
Printing apparatus as in claim 1 wherein said means for forcing ink through said screen comprises: a handle; a porous ink-retaining element secured to said handle; and guide means positioned adjacent said opening on said frame for guiding said element in a sweep across said opening.
Claim 11
Dependent Claim
41 words
Printing apparatus as in claim 9 wherein: said handle comprises an operator-manipulated element and a mounting element removably secured to said operator-manipulated element, said mounting element supporting said porous ink-retaining element; and said porous ink-retaining element comprises a flexible cellular material.
Claim 12
Dependent Claim
76 words
Printing apparatus as in claim 10 wherein said handle has a shaft with a pair of tapered ends extending transverse to the direction of said sweep, and said guide means comprises: first and second guide rails mounted on opposite sides of said opening and positioned parallel to the direction of sweep of said handle; flexible clips received over said guide rails; each clip having an opening for receiving one of said tapered ends of said shaft.
Claim 13
Dependent Claim
121 words
An inking device for use with a screen printing apparatus having a porous sheet through which ink is forced in a predetermined imprint pattern onto a blank sheet, when said inking device is swept across said porous sheet, said inking device comprising: an operator-manipulated handle having an elongated slot in one end thereof; a base removably attached to said handle, said base having a tab complementary to said slot, said tab being releasably retained in said slot, said base having a curved surface; and a porous elongated ink-retaining element mounted on the curved surface of said base, the ink in said porous element being forced through said porous sheet as saiD base and porous element are swept across said porous sheet.
Claim 14
Dependent Claim
121 words
An inking device for use with a screen printing apparatus having a porous sheet through which ink is forced in a predetermined imprint pattern onto a blank sheet, when said inking device is swept across said porous sheet, said inking device comprising: an operator-manipulated handle having an elongated slot in one end thereof; a base removably attached to said handle, said base having a tab complementary to said slot, said tab being releasably retained in said slot, said base having a curved surface; and a porous elongated ink-retaining element mounted on the curved surface of said base, the ink in said porous element being forced through said porous sheet as saiD base and porous element are swept across said porous sheet.
Claim 15
Dependent Claim
42 words
An inking device as in claim 12 wherein said curved surface is semi-cylindrical, and wherein a shaft is positioned in said slot on an axis transverse to the direction of sweep of said device, said tab retaining said shaft in said slot.
Claim 16
Dependent Claim
17 words
An inking device as in claim 13 wherein said porous elongated element comprises a flexible cellular material.
References Cited (Backward Citations)
US1568651A
Cited
US1938904A
Cited
US2542059A
Cited
US2704510A
Cited
US2739530A
Cited
US2976560A
Cited
US2977619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |