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A Concrete Polishing Extension device for treating hardened concrete surfaces and more specifically interior surfaces of countertop sinks made from decorative concrete. The extension device has features for use with grinding deep, contoured surfaces of concrete. The preferred embodiment is comprised

A Concrete Polishing Extension device for treating hardened concrete surfaces and more specifically interior surfaces of countertop sinks made from decorative concrete. The extension device has features for use with grinding deep, contoured surfaces of concrete. The preferred embodiment is comprised of an extended shaft with connection features and other features; a containment cap; a means to connect cap to shaft; an external sleeve that encircles the shaft; a slip ring collar; a means to connect external sleeve to slip ring collar; a bearing such as a thrust bearing; means to connect slip ring collar to bearing; and a means of the extended shaft used to contain bearing, slip ring collar and sleeve assembly. The device has a distal end with means to removably attach to a standard driver and a proximal end with means to removably attach to engage a standard grinding head.

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1. A Concrete Polishing Extension 11 is made of durable materials comprised of (a) an extended shaft 18 with a proximal end 26 and a distal end 28, each of the end 26, 28 with connection features;(b) a containment cap 17;(c) a means to connect cap 17 to shaft 18;(d) an external sleeve 38 that encirc

1. A Concrete Polishing Extension 11 is made of durable materials comprised of (a) an extended shaft 18 with a proximal end 26 and a distal end 28, each of the end 26, 28 with connection features;(b) a containment cap 17;(c) a means to connect cap 17 to shaft 18;(d) an external sleeve 38 that encircles the shaft 18 in a slip fit;(e) a slip ring collar 30 with an inner and outer diameter;(f) a means to connect 39 external sleeve 38 to slip ring collar 30;(g) a bearing 34;(h) means to connect slip ring collar 30 to bearing 34; and(i) a feature of the extended shaft 18 as a means to contain bearing 34, slip ring collar 30 and sleeve 38 assemblywherein the features of the concrete polishing extension 11 may be used to the extend the depth of a polishing head assembly 22 from a drive 20 to result in an extended reach and permit the extended reach to treat deep, contoured surfaces of concrete counter top with bowls. 2. The device according to claim 1 wherein the extended shaft 18 has a bore 16 though the center to allow cooling water to be passed through from grinder 20 to polishing head 22. 3. The device according to claim 1 wherein the connection feature of the distal end 28 of the shaft 18 of the Concrete Polishing Extension 11 is a means to removably attach 13 a standard drive 20 to the device 11. 4. The device according to claim 3 wherein the means to removably attach 13 is an internally threaded hole 12. 5. The device according to claim 1 wherein the connection feature of the proximal end 26 of the shaft 18 of the Concrete Polishing Extension 11 is a means to removably attach 13 a standard treatment rotary head assembly 22 with the Concrete Polishing Extension 11. 6. The device according to claim 5 wherein the means to removably attach 13 is an external male thread. 7. The device according to claim 1 wherein the proximal end 26 of the shaft 18 of the Concrete Polishing Extension 11 is additionally comprising a pair of opposing flats 14 for use in torqueing the Concrete Polishing Extension 11 to a standard treatment rotary head assembly 22. 8. The device according to claim 1 wherein the means to connect 39 external sleeve 38 to slip ring collar 30 is an epoxy adhesive. 9. The device according to claim 1 wherein the means to connect 39 external sleeve 38 to slip ring collar 30 is by friction welding. 10. The device according to claim 1 wherein the bearing 34 is a thrust bearing. 11. The device according to claim 1 wherein the means to connect slip ring collar 30 to bearing 34 is a press fit of the inner diameter of the collar 30 to the outer diameter of the bearing 34. 12. The device according to claim 1 wherein the feature is a shoulder 19 of the extended shaft 18 primarily used to contain bearing 34, slip ring collar 30 and sleeve 38. 13. A Concrete Polishing Extension 11 is made of durable materials comprised of (a) an extended shaft 18 with a proximal end 26 and a distal end 28, each of the end 26, 28 with connection features;(b) a containment cap 17;(c) a means to connect cap 17 to shaft 18;(d) an external sleeve 38 that encircles the shaft 18 with a slip fit;(e) a slip ring collar 30 with an inner and outer diameter clamped toward distal end 28;(f) a support handle 32;(g) a means to attach support handle 32 to slip ring collar 30;(h) a means to connect 39 external sleeve 38 to slip ring collar 30;(i) a bearing 34;(j) means to connect slip ring collar 30 to bearing 34; and(k) a feature of the extended shaft 18 as a means to contain bearing 34, slip ring collar 30 and sleeve 38 assemblywherein the features of the concrete polishing extension 11 may be used to the extend the depth of a polishing head assembly 22 from a drive 20 to result in an extended reach and permit the extended reach to treat deep, contoured surfaces of concrete counter top with bowls. 14. The device according to claim 13 additionally comprising (l) an anti-rotational anchor tab 36 and(m) a means to attach tab 36 to slip ring collar 30. 15. A Concrete Polishing Extension 11 is made of durable materials comprised of (a) an extended shaft 18 with a proximal end 26 and a distal end 28, each of the end 26, 28 with connection features;(b) a containment cap 17;(c) a means to connect cap 17 to shaft 18;(d) an external sleeve 38 that encircles the shaft 18;(e) a slip ring collar 30 with an inner and outer diameter;(f) a means to connect 39 external sleeve 38 to slip ring collar 30;(g) a distal bearing 34;(h) a means to connect distal bearing 34 to the shaft 18;(i) a means to connect distal bearing 34 to the external sleeve 38;(j) a proximal bearing 34;(k) means to connect slip ring collar 30 to proximal bearing 34; and(l) a feature of the extended shaft 18 as a means to contain proximal bearing 34, slip ring collar 30 and sleeve 38 assemblywherein the features of the concrete polishing extension 11 may be used to the extend the depth of a polishing head assembly 22 from a drive 20 to result in an extended reach and permit the extended reach to treat deep, contoured surfaces of concrete counter top with bowls. 16. The device according to claim 15 additionally comprising (m) an anti-rotational anchor tab 36 and(n) a means to attach tab 36 to slip ring collar 30.