Tool and method for removing fluid from container

A removable drill tool for accessing fluid in a thin-walled container having a wall, comprising:

• a modified drill bit including a shank and a tip supported on a leading end of the shank, said tip including opposing flutes configured to drill a hole in the wall as the bit is rotated and further including a cylindrically shaped portion at a rear thereof, the shank including a frustoconically-shaped exterior surface for sealingly engaging the wall and expanding the hole as the shank is extended through the wall, and further including threads on the frustoconically-shaped exterior surface for engaging the wall as the bit is further rotated to positively draw the wall onto the shank, and still further including an internal passageway extending from the leading end to a trailing end of the shank for communicating with the fluid in the container once the bit is extended into the container, said passageway including a radially extending portion in the cylindrically shaped portion of said tip and including a longitudinally extending portion in said shank;
• and
• a bit remote section including a valve assembly for preventing fluid from passing through said internal passageway as said tool is rotated to form said hole, said bit remote section being configured for operable connection to a fluid collection device, said bit remote section being configured to place said fluid collection device in fluid communication with said internal passageway at a time when the tool has been fully inserted into the container and when said valve assembly has been opened, and including sealing means adjacent the threaded shank section for sealing against the container wall material after the tool has been fully inserted into the container.

A removable drill tool for drilling a hole in a vehicle oil filter casing to access and remove oil in the casing, comprising:

• a modified bit including a shank and a drill-tip supported on a leading end of the shank configured to drill a hole in the wall as the bit is rotated, the shank including a frustoconically-shaped exterior surface for sealingly engaging the wall and expanding the hole as the shank is extended through the wall, and further including threads on the frustoconically-shaped exterior surface for engaging the wall as the bit is further rotated to positively draw the wall onto the shank, and still further including a passageway extending from the leading and to a trailing end of the shank for communicating with the fluid in the container once the bit is extended into the container, said passageway including a radially extending portion in said tip and a longitudinally extending portion in said shank;
• a sealing member on the trailing end of the shank for sealingly engaging the marginal material of the container wall forming the hole once the bit is fully extended into the container, the sealing member including an annular sealing surface that extends from the exterior surface of the shank, the sealing surface being concavely shaped in cross section;
• a body attached to the trailing end of the bit, the body including a geometrically-shaped exterior surface configured to mateably releasably engage a socket of a hand-held drill, the geometrically-shaped member and the bit forming a compact arrangement that can be manipulated as a unit with the drill while only holding onto the drill when drilling the hole for ease of operation and for safety;
• and
• a valve attached to the bit and in communication with the passageway for preventing fluid from passing through said internal passageway as said tool is rotated to form said hole, said modified bit being configured to place a fluid collection device in fluid communication with said internal passageway at a time when the tool has been fully inserted into the container and when said valve assembly has been opened.

A removable drill tool for accessing fluid in a thin-walled container having a wall, comprising:

• a modified bit including a shank and a tip supported on a leading end of the shank configured to pierce a hole in the wall, the shank including a frustoconically-shaped exterior surface for sealingly engaging the wall and expanding the hole as the shank is extended through the wall, and further including threads on the frustoconically-shaped exterior surface for engaging the wall as the bit is further rotated to positively draw the wall onto the shank, and still further including a passageway extending from the leading and to a trailing end of the shank for communicating with the fluid in the container once the bit is extended into the container, said passageway including a radially extending portion in said tip and a longitudinally extending portion in said shank;
• a sealing member on the trailing end of the shank for sealingly engaging the marginal material of the container wall forming the hole once the bit is fully extended into the container, the sealing member including an annular sealing surface that extends from the exterior surface of the shank, the sealing surface being concavely shaped in cross section such that the threads draw the marginal material into sealing engagement with the concavely shaped sealing surface of the sealing member;
• and
• a valve operable attached to the bit and in communication with the passageway for preventing fluid from passing through said internal passageway as said tool is rotated to form said hole, said modified bit being configured to place a fluid collection device in fluid communication with said internal passageway at a time when the tool has been fully inserted into the container and when said valve assembly has been opened.

A method of accessing fluid in a thin-walled container having a wall comprising deformable material without substantial leakage, comprising step of:

• providing a tool including a modified drill having a tip configured to rotatably drill a hole in the wall of the thin-walled container, a frustoconically-shaped, externally-threaded shank, and a trailing end section defining an annular sealing surface, said passageway including a radially extending portion in said tip and a longitudinally extending portion in said shank, said trailing end section including a valve to present fluid from passing through the internal passageway as said tool is rotated to form said hole;
• rotating the tool while pressing the tool against the wall of the thin-walled container to first drill a hole in the wall and thereafter cause threads on the shank to engage the marginal material of the wall forming the hole so that the threads draw the marginal material along the shank against the sealing surface and so that the frustoconically-shaped externally-threaded shank continuously, slidingly, sealingly engages the marginal material while expanding the size of the hole;
• and
• removing fluid from the container to a fluid collection device at a time when the tool has been fully inserted into the container and when said valve has been opened.