The device is for cleaning the inner surface of a pipe. The device has a spindle arranged to be rotated and having a front end and a rear end between which a plurality of elastic metal blades are attached both in the rotation direction of the spindle and in the direction perpendicular to the rotation direction to clean the inner surface of the pipe. The blades has a shape that is curved at at least two points such that they curve at least once towards the circumferential direction of the spindle and at least once outwards from the circumferential direction of the spindle to prevent the device from getting stuck in uneven pipe systems.

There is described a grinding wheel (1), particularly for grinding operations carried out on sheets of glass (2), ceramic material or similar materials, comprising a disc-shaped support with abrasive material arranged on the circumferential profile of the support, and an opposing central hole (3) for attachment to a drive shaft (4) of the grinding wheel. The disc-shaped support comprises a pair of opposed disc-shaped grinding wheel bodies (5, 6) coupled in a facing position so as to define together the abrasive grinding surface (5c, 6c) along the circumferential profile, and each of the disc-shaped bodies (5, 6) has a predetermined resilience such that the disc-shaped bodies (5, 6) can be flexed away from each other in the zone of contact with the component being ground, for the purpose of consequently applying pressure to the component in the grinding operation.

There is described a grinding wheel (1), particularly for grinding operations carried out on sheets of glass (2), ceramic material or similar materials, comprising a disc-shaped support with abrasive material arranged on the circumferential profile of the support, and an opposing central hole (3) for attachment to a drive shaft (4) of the grinding wheel. The disc-shaped support comprises a pair of opposed disc-shaped grinding wheel bodies (5, 6) coupled in a facing position so as to define together the abrasive grinding surface (5c, 6c) along the circumferential profile, and each of the disc-shaped bodies (5, 6) has a predetermined resilience such that the disc-shaped bodies (5, 6) can be flexed away from each other in the zone of contact with the component being ground, for the purpose of consequently applying pressure to the component in the grinding operation.

A method of finishing a laminated glass structure (102) comprising a flexible glass sheet (130) having a thickness of no greater than about 0.3 mm laminated to a non-glass substrate (116) by an adhesive layer (135) is provided. The method includes applying a compressive force against a cut edge (106) of the flexible glass sheet (130) using an abrasive surface (108) of a hand-held finishing tool (105). Material of the laminated glass structure (102) is removed at the cut edge (106) such that a glass edge strength of the flexible glass sheet (130) is at least about 50 MPa.

A method of finishing a laminated glass structure (102) comprising a flexible glass sheet (130) having a thickness of no greater than about 0.3 mm laminated to a non-glass substrate (116) by an adhesive layer (135) is provided. The method includes applying a compressive force against a cut edge (106) of the flexible glass sheet (130) using an abrasive surface (108) of a hand-held finishing tool (105). Material of the laminated glass structure (102) is removed at the cut edge (106) such that a glass edge strength of the flexible glass sheet (130) is at least about 50 MPa.

A rotary disc structure of a polishing machine includes a disc, a flat section formed on the disc, at least one slope section formed on the disc and located at an outer side of the flat section, at least one coupling section provided on the flat section or the slope section, and a coupling member provided on a side of the disc that is distant from the coupling section. As such, the coupling section can be coupled to a cleansing member, such as sponge. The disc can be coupled, by means of the coupling member, to an electric motor. A user may operate the electric motor to rotate the cleansing member for polishing or waxing an automobile body. The disc is provided with a unique design in which an outer side of the flat section is folded to form the slope section to conduct polishing or waxing of the automobile.

A rotary disc structure of a polishing machine includes a disc, a flat section formed on the disc, at least one slope section formed on the disc and located at an outer side of the flat section, at least one coupling section provided on the flat section or the slope section, and a coupling member provided on a side of the disc that is distant from the coupling section. As such, the coupling section can be coupled to a cleansing member, such as sponge. The disc can be coupled, by means of the coupling member, to an electric motor. A user may operate the electric motor to rotate the cleansing member for polishing or waxing an automobile body. The disc is provided with a unique design in which an outer side of the flat section is folded to form the slope section to conduct polishing or waxing of the automobile.

The device is for cleaning the inner surface of a pipe. The device has a spindle arranged to be rotated and having a front end and a rear end between which a plurality of elastic metal blades are attached both in the rotation direction of the spindle and in the direction perpendicular to the rotation direction to clean the inner surface of the pipe. The blades has a shape that is curved at at least two points such that they curve at least once towards the circumferential direction of the spindle and at least once outwards from the circumferential direction of the spindle to prevent the device from getting stuck in uneven pipe systems.

The device is for cleaning the inner surface of a pipe. The device has a spindle arranged to be rotated and having a front end and a rear end between which a plurality of elastic metal blades are attached both in the rotation direction of the spindle and in the direction perpendicular to the rotation direction to clean the inner surface of the pipe. The blades has a shape that is curved at at least two points such that they curve at least once towards the circumferential direction of the spindle and at least once outwards from the circumferential direction of the spindle to prevent the device from getting stuck in uneven pipe systems.

The invention relates to a sub-aperture polishing tool, comprising a support member including an attachment feature for attachment to a sub-aperture polishing machine. At an end of the support member is a polishing head comprising: a base structure attached to or integral with the support member, the base structure being arranged to provide a non-flat surface. The polishing head also comprises an outer shell, at least part of the outer surface of which defines the working surface of the polishing tool, the outer shell being affixed to the base structure so as to enclose a cavity between the outer shell and the non-flat surface. A viscoelastic material filling the cavity, located between the outer shell and the base structure.