US 6,708,614 B2Granted

Stamping device

OwnerDale Lookholder, Christopher B. Caston +2inventors

InventorsDale Lookholder, Christopher B. Caston, Joaquin G. Serrano, Theodore Lookholder

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Abstract

A hand-held stamping device and the method of making same that includes a substantially transparent acrylic mounting block to which a substantially transparent printing element is removably affixed without the use of adhesives. When the device of the invention is used, the indicia formed on the printing element can be clearly viewed through the mounting block, and the printing surface can be clearly viewed through the printing element. This enables precise positioning of the indicia on the surface to be printed. The device includes both a convex surface and a planar surface to which the printing element can be removably affixed. When the printing element is affixed to the planar surface, the indicia on the printing element, when viewed through the convex surface, is magnified.

Claims6

Dependent claims

A method of making a hand stamp having a body portion having a surface comprising the steps of:

(a) constructing a printing element having an image thereon comprising the steps of:
(i) overlaying a first transparent film over a first negative having formed thereon the negative of the image to be produced;
(ii) depositing on said first transparent film a photopolymer to form a precursor printing element having a first and second surface said photopolymer exhibiting visco elastic characteristics;
(iii) overlaying a second transparent film over said photopolymer;
(iv) superimposing over said second transparent film a second negative having at least one clear area in index with said image of said first negative and an opaque area surrounding said clear opening;
(v) passing rays of light through said second negative to expose said second surface of said photopolymer to light to form a printing element engagement surface comprising a multiplicity of microscopic protuberances;
and
(vi) passing rays of light through said first negative to expose said first surface of said precursor printing element to light to form a printing element having an image.
(b) urging said printing element engagement surface into pressural engagement with the smooth surface of said body portion of the hand stamp to cause said multiplicity of microscopic protuberances to grip said surface of said body portion of the hand stamp.

6 more elements

A method of making a hand stamp having a body portion having a surface comprising the steps of:

(a) constructing a printing element having an image thereon comprising the steps of:
(i) superimposing a first transparent, protective film over a first negative having formed thereon the image to be produced;
(ii) depositing on said first transparent, protective film a visco elastic photopolymer to form a precursor printing element having first and second surfaces;
(iii) overlaying a second transparent, protective film over said photopolymer;
(iv) superimposing over said second transparent, protective film a second negative having at least one clear area in index with said image of said first negative and an opaque area surrounding said clear opening;
(v) exerting a pressure upon said second negative and said second transparent, protective film to exert a pressure on said second surface of said precursor printing element to form a substantially planar precursor engagement surface;
(vi) passing ultraviolet rays of light through said second negative to expose said precursor engagement surface to said ultraviolet rays of light to form an engagement surface;
(vii) passing rays of ultraviolet light through said first negative and said first transparent, protective film to expose said first surface of said precursor printing element to said rays of ultraviolet light to form an irradiated precursor printing element;
and
(viii) removing from said irradiated precursor printing element unexposed polymers to form a printing element having a printing element engagement surface having a multiplicity of microscopic suction cup-like gripping protuberances;
and
(b) urging said printing element engagement surface of said printing element into pressural engagement with the smooth surface of said body portion of the hand stamp to cause said multiplicity of microscopic suction cup-like gripping protuberances to releasably grip said surface of said body portion of said stamp.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/823,485Filed 30 Mar 2001 · continuation in part
Priority: 14 Jul 1999
Published: US 2002/0046669 A125 Apr 2002
Granted: 23 Mar 2004
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

B41K 1/06
With one or more flat stamping surfaces having fixed images: with means for locating the image to be obtained
B41D 7/00
Shaping elastic or deformable material
B41K 1/02
Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other…:…
B41K 1/56
Details: handles

Family

Application09/353,115Parent of this continuation-in-part · filed 14 Jul 1999
Application09/556,926Parent of this continuation-in-part · filed 21 Apr 2001
US 2002/0046669 A1Pre-grant publication · published 25 Apr 2002
US 6,422,140 B1Parent of this continuation-in-part
US 6,095,046 AParent of this continuation-in-part
US 6,708,614 B2This patent

From the US filing history. Foreign family members aren’t listed.