초록 ▼

Disclosed is a cardholder with dimensions approximating a standardized card carried by a person, the cardholder being made of a one-piece clear plastic material and may contain a viewing portion having fresnel contour lines and at least a pair of folded edges which form at least a pair of tracks of

Disclosed is a cardholder with dimensions approximating a standardized card carried by a person, the cardholder being made of a one-piece clear plastic material and may contain a viewing portion having fresnel contour lines and at least a pair of folded edges which form at least a pair of tracks of the cardholder for slipping on and off a standardized card such as credit and debit cards and the like. A method of making the cardholder including a cardholder shaped magnetic lens is also disclosed.

대표청구항 ▼

What is claimed is: 1. A method of making a one-piece pocket size cardholder shaped fresnel magnifying lens comprising: (a) forming a one-piece clear plastic sheet into a rectangle shape of a standardized card with tab-like extensions of the plastic sheet provided at a pair of opposing edges of the

What is claimed is: 1. A method of making a one-piece pocket size cardholder shaped fresnel magnifying lens comprising: (a) forming a one-piece clear plastic sheet into a rectangle shape of a standardized card with tab-like extensions of the plastic sheet provided at a pair of opposing edges of the rectangle, wherein the one-piece clear plastic sheet is further provided with fresnel contour lines; and (b) forming a pair of opposing parallel folded edges of the rectangle-shaped plastic sheet by heating and bending the heat softened tab-like extensions thereof, the folded edges forming a pair of tracks on a same side of the rectangle-shaped plastic sheet, and the pair of tracks enabling the slipping on and off one or more of said standardized card. 2. The method of making a one-piece pocket size cardholder shaped fresnel magnifying lens according to claim 1, wherein the forming of the plastic sheet with the fresnel contour lines into the rectangle shape of a standardized card further includes curving each of the corners of the rectangle and of the tab-like extensions thereof. 3. The method of making a one-piece pocket size cardholder shaped fresnel magnifying lens according to claim 2, wherein the forming of the plastic sheet with the fresnel contour lines into the rectangle shape of a standardized card further includes cutting away a portion at an edge thereof other than at the location of the tab extensions of the rectangle. 4. The method of making a one-piece pocket size cardholder shaped fresnel magnifying lens according to claim 1, wherein prior to the forming of the folded edges, there is further comprised: placing a mask over the fresnel contour lines of a size corresponding to a fresnel lens viewing window and then coating the remaining portion of that side of the one-piece clear plastic sheet to achieve a durable, opaque finish, the coated side being at either side of the one-piece plastic sheet. 5. The method of making a one-piece pocket size cardholder shaped fresnel magnifying lens according to claim 4, wherein the coating of a side of the one-piece plastic sheet with an opaque finish is effected at a phase of the method between that of forming the rectangle shape with tab-like extensions and the forming of the folded edges. 6. The method of making a one-piece pocket size cardholder shaped fresnel magnifying lens according to claim 4, wherein the coating of a side of the one-piece plastic sheet with an opaque finish is effected at a phase or the method subsequently to forming the fresnel contour lines at a portion of the one-piece clear plastic sheet and before the forming of the rectangle shape with tab-like extensions. 7. A method of making a one-piece pocket size cardholder shaped fresnel magnifying lens comprising: (a) forming a one-piece clear plastic sheet into a rectangle shape of a standardized card with tab-like extensions of the plastic sheet provided at a pair of opposing edges of the rectangle, wherein the one-piece clear plastic sheet is further provided with fresnel contour lines; and (b) forming a pair of opposing parallel folded edges of the rectangle-shaped plastic sheet by applying controlled heating to the tab-like extensions thereof and bending the heat softened tab-like extensions, the folded edges forming a pair of tracks on a same side of the cardholder rectangle-shaped plastic sheet, and the pair of tracks enabling the slipping on and off of one or more said standardized card, wherein the controlled heating includes placing securely the rectangle-shaped one-piece plastic sheet over a table having at least a pair of properly spaced heating elements embedded in the table so that a controlled amount of heat can be delivered to the entirety of tab-like extensions to cause them to be bendable to about 180°. 8. The method of making a one-piece pocket size cardholder shaped fresnel magnifying lens according to claim 7, wherein prior to the forming of the folded edges, there is further comprised: placing a mask over the fresnel contour lines of a size corresponding to a fresnel lens viewing window and then coating the remaining portion of that side of the one-piece clear plastic sheet to achieve a durable, opaque finish, the coated side being at either side of the one-piece plastic sheet. 9. The method of making a one-piece pocket size cardholder shaped fresnel magnifying lens according to claim 8, wherein the coating of a side of the one-piece plastic sheet with an opaque finish is effected at a phase of the method between that of forming the rectangle shape with tab-like extensions and the forming of the folded edges. 10. The method of making a one-piece pocket size cardholder shaped fresnel magnifying lens according to claim 8, wherein the coating of a side of the one-piece plastic sheet with an opaque finish is effected at a phase of the method subsequently to forming the fresnel contour lines and before the forming of the rectangle shape with tab-like extensions.