Razor blade assembly
View Patent ↗There is provided in a preferred embodiment of the present invention a razor blade assembly having two plastic blades affixed to a central metal core. Each blade includes a blade edge and a connector for connecting to a connection slot in the metal core.
1. A method of manufacturing a surface scraper, comprising the steps of:
providing a metal core including a first longitudinally extending edge and a second longitudinally extending edge spaced from the first longitudinally extending edge;
forming a first connection slot adjacent to a first longitudinally extending edge and a second connection slot adjacent to a second longitudinally extending edge in the metal core;
molding a first blade from a single piece of plastic that includes a first acute angled cutting edge, a first channel defined by a first sidewall and a second sidewall extending away from the first cutting edge with the first longitudinally extending edge of the metal core fixed within the first channel by only a first connector extending through the first connection slot between the first sidewall and the second sidewall of the first channel;
molding a second blade from a single piece of plastic that includes a second acute angled cutting edge, a second channel defined by a first sidewall and a second sidewall extending away from the second cutting edge with the second longitudinally extending edge of the metal core fixed within the second channel by only a second connector extending through the second connection slot between the first sidewall and the second sidewall of the second channel; and
wherein an exposed portion of the metal core extends between the first blade and the second blade.
2. The method of claim 1 , wherein the first connection slot and the second connection slot are substantially ovoid.
3. A surface scraper, comprising:
a metal core including a first longitudinally extending edge, a first opening adjacent to the first longitudinally extending edge, a second longitudinally extending edge and a second opening adjacent to the second longitudinally extending edge;
a first blade formed from a single piece of plastic and including a first acute angled cutting edge, a first channel defined by a first sidewall and a second sidewall extending away from the first cutting edge and a first connector extending between the first sidewall and the second sidewall of the first channel; and
a second blade formed of a single piece of plastic and including a second acute angled cutting edge, a second channel defined by a first sidewall and a second sidewall extending away from the second cutting edge and a second connector extending between the first sidewall and the second sidewall of the second channel,
wherein the metal core is fixed within the first channel by only the first connector that extends through the first opening between the first sidewall and the second sidewall of the first channel and the metal core is fixed within the second channel by only the second connector that extends through the second opening between the first sidewall and the second sidewall of the second channel, and
wherein an exposed portion of the metal core extends between the first blade and the second blade.
4. The surface scraper of claim 3 , wherein the metal core is rectangular in shape, and the first plastic blade and second plastic blade are located on opposite sides of the metal core.
5. The surface scraper of claim 3 , wherein the first plastic blade and the second plastic blade are mirror images of one another.
6. The surface scraper of claim 3 , wherein the first plastic blade and the second plastic blade are opposed to one another and the metal core is located mid-way of the first plastic blade and second plastic blade.
7. The surface scraper of claim 3 , wherein the first cutting edge lies in a first plane that extends between the first blade and the second blade and the second cutting edge lies in a second plane that is parallel to the first plane and that extends between the first blade and the second blade.
8. The surface scraper of claim 3 , wherein the metal core is rectangular in shape, and the first cutting edge of the first plastic blade and the second cutting edge of the second plastic blade are trapezoidal in shape.
9. The surface scraper of claim 3 , wherein the first opening and the second opening are substantially ovoid.
10. The surface scraper of claim 3 , wherein the metal core includes only the first opening adjacent to the first longitudinally extending edge and the second opening adjacent to the second longitudinally extending edge.
11. The surface scraper of claim 3 , wherein the first blade includes a first planar surface, a second planar surface and a linear surface extending at an angle directly between the first planar surface and the second planar surface of the first blade forming the first acute angled cutting edge.
12. The surface scraper of claim 11 , wherein the first planar surface and the second planar surface of the first acute cutting edge are exterior surfaces.
13. The surface scraper of claim 3 , wherein the second blade includes a first planar surface, a second planar surface and a linear surface extending at an angle directly between the first planar surface and the second planar surface of the second blade forming the second acute angled cutting edge.
14. The surface scraper of claim 13 , wherein the first planar surface and the second planar surface of the second acute cutting edge are exterior surfaces.
15. A surface scraper, comprising:
a metal core including a first longitudinally extending edge with only a single first opening adjacent to the first longitudinally extending edge and a second longitudinally extending edge spaced from the first longitudinally extending edge with only a single second opening adjacent to the second longitudinally extending edge;
a first blade formed from a single piece of plastic and including a first acute angled cutting edge, a first channel defined by a first sidewall and a second sidewall extending away from the first cutting edge and a first connector extending between the first sidewall and the second sidewall of the first channel; and
a second blade formed of a single piece of plastic and including a second acute angled cutting edge, a second channel defined by a first sidewall and a second sidewall extending away from the second cutting edge and a second connector extending between the first sidewall and the second sidewall of the second channel,
wherein the metal core is fixed within the first channel by only the first connector that extends through the first opening between the first sidewall and the second sidewall of the first channel and the metal core is fixed within the second channel by the second connector that extends through the second opening between the first sidewall and the second sidewall of the second channel
wherein an exposed portion of the metal core extends between the first blade and the second blade.
16. The surface scraper of claim 15 , wherein the first plastic blade and the second plastic blade are mirror images of one another.
17. The surface scraper of claim 15 , wherein the first plastic blade and the second plastic blade are opposed to one another and the metal core is located mid-way of the first plastic blade and second plastic blade.
18. The surface scraper of claim 15 , wherein the first cutting edge lies in a first plane that extends between the first blade and the second blade and the second cutting edge lies in a second plane that is parallel to the first plane and that extends between the first blade and the second blade.
19. The surface scraper of claim 15 , wherein the first opening and the second opening are substantially ovoid.
20. The surface scraper of claim 15 , wherein the metal core is fixed within the first channel by only the first connector and the metal core is fixed within the second channel by only the second connector.