A method of making a razor cartridge including providing at least one razor blade having a cutting edge extending along a length of the razor blade and printing at least one printed object on the length is provided. The razor blade is positioned between the guard and the cap where the visible surface of the at least one razor blade includes a printed object. The printed object may extend continuously along the length of the razor blade and/or may have multiple portions having a comb-like structure. The printed object appears as a solid object to a viewer's naked eye. The solid object includes a plurality of printed ink dots not visible to the viewer's naked eye. The printed object of flexible, polymer ink may act as a guard element on the razor blade which helps with glide and to manage a user's skin (e.g., bulge) during shaving.

The Smart Reamer Tool, Apparatus or Method is used to underream an oil or natural gas well while interlinked calipers and calibration sensors simultaneously record data relating to the geometry of the drilling operation (well diameter, diameter of the underreamed zone) and drilling fluid properties (density). Further sensors provide data on the relative position of the cutting and stabilizing blocks. Other sensors measure vibration data. All the sensors are interlinked by means of microprocessors which compare and correlate said data to automatically verify and deliver a desired wellbore diameter without the need to unnecessarily stop drilling or trip out of the hole.

A razor cartridge includes a housing, a guard, a cap; and a plurality of razor blades which are installed between the guard and cap in the housing and each includes a base portion, a bent portion extending from an end of the base portion to be bent, and an edge portion extending from an end of the bent portion, having a cutting edge formed at an end of the edge portion, a first distance between a straight line extending from the front of the base portion and an end point of the cutting edge is in the range of 0.3 to 1.0 mm, wherein an overlap size defined as a distance by which the first distance of a razor blade is overlapped by an adjacent razor blade located behind the razor blade when the adjacent razor blade is projected in the vertical direction ranges less than or equal to 0.5 mm.

The Smart Reamer Tool, Apparatus or Method is used to underream an oil or natural gas well and deliver a desired wellbore diameter without the need to unnecessarily stop drilling or trip out of the hole.

A razor head may comprise one or more cutting members. The razor head of the first aspect further comprises a vibrating component configured to generate vibrations. The razor head of the present disclosure further comprises a structural element configured to transmit the vibrations from the vibrating component to the one or more cutting members. Furthermore, the vibrating component of the first aspect is disposed away from respective one or more cutting edges of the one or more cutting members towards an inner portion of the razor head, wherein the vibrating component is connected with the structural element. In the present disclosure, the structural element extends from the vibrating component towards the one or more cutting members.

A razor head may comprise one or more cutting members. The razor head of the first aspect further comprises a vibrating component configured to generate vibrations. The razor head of the present disclosure further comprises a structural element configured to transmit the vibrations from the vibrating component to the one or more cutting members. Furthermore, the vibrating component of the first aspect is disposed away from respective one or more cutting edges of the one or more cutting members towards an inner portion of the razor head, wherein the vibrating component is connected with the structural element. In the present disclosure, the structural element extends from the vibrating component towards the one or more cutting members.

The Tamian Sharpening Device (or T.S.D.) incorporates a novel razor blade sharpening technique that can rejuvenate metal razor blades of all types and extends their life. The T.S.D. utilizes a single wire coil and an Integrated Circuit (or I.C.) to generate an oscillating, electromagnetic force field (or E.M.F.), which polishes and sharpens the shaver's metal blades. When the E.M.F. is tuned to the shaver blade's natural resonant frequency, the sharpening process is amplified and enhanced. The T.S.D can be designed as a stand-alone sharpening unit or as new kinds of self-sharpening shavers both electric and handheld.