Center locator for hole cutter
AssigneesYao-Hsien Hsu, Huang-Ming Hsu, Chin-Fa Kao
InventorsYao-Hsien Hsu, Huang-Ming Hsu
Life of this patent
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Abstract
A center locator is operated with a hole center for enlarging a round opening and includes a center seat having a through hole centrally defined therein, wherein the through hole is adapted to allow a centering drill of the hole cutter extending through the center seat. At least one adjusting device is longitudinally mounted to the center seat and formed with an engaging portion, wherein the at least one adjusting device is expandable relative to the center seat for adjusting a distance between the engaging portion of the at least one adjusting device and a center of the center seat.
Claims7
A center locator adapted to be operated with a hole cutter for enlarging a round opening, the center hole locator comprising:
- a center seat having a through hole centrally defined therein, wherein the through hole is adapted to allow a centering drill of a hole cutter to extend through said center seat, said center seat having two threaded rods extend therefrom, the two threaded rods linearly corresponding to each other, two adjusting devices being respectively mounted to a corresponding one of the two threaded rods of said center seat, each adjusting device of the two adjusting devices having a socket having a first end and a second end, the socket having a threaded hole longitudinally defined in the first end thereof and an engaging portion formed on the second end of the socket, each of the sockets being screwed onto a corresponding one of the two threaded rods such that a distance between the engaging portions and a center of the center seat is adjusted when the socket is rotated relative to the corresponding threaded rod, the two threaded rods of said center seat having two opposite spiral directions and the two threaded holes of the sockets have two opposite spiral directions such that the two sockets are able to synchronously move relative to said center seat when said center seat is rotated relative to the two sockets so as to provide a one-arm operating mode;
- and
- at least one adjusting device longitudinally mounted to said center seat and formed with an engaging portion, wherein said at least one adjusting device is expandable relative to said center seat so as to adjust a distance between the engaging portion of said at least one adjusting device and the center of the center seat, the engaging portion formed with an engaging structure, the engaging structure selected from a group consisting of multiple ribs, a wedge groove, a curved groove, a C-shaped groove and a Z-shaped structure.
A center locator adapted to be operated with a hole cutter for enlarging a round opening, the center locator comprising:
- a center seat having a through hole centrally defined therein, wherein the through hole is adapted to allow a centering drill of a hole cutter to extend through said center seat, wherein said center seat has two threaded rods extending therefrom, the two threaded rods linearly corresponding to each other, two adjusting devices being respectively mounted to a corresponding one of the two threaded rods of said center seat, each adjusting device of the two adjusting devices having a socket having a first end and a second end, the socket having a threaded hole longitudinally defined in the first end thereof and an engaging portion formed on the second end of the socket, each of the sockets being screwed onto a corresponding one of the two threaded rods such that a distance between the engaging portions and a center of said center seat is adjusted when the socket is rotated relative to the corresponding threaded rod, said center seat includes a first through hole and a second through hole defined therein, the first through hole having a diameter greater than a diameter of the second through hole for allowing centering drills with different diameters to extend through said center seat, the first through hole and the second through is being crossed and the cross point of the first through hole and the second through hole being situated on an axis of said center seat;
- and
- at least one adjusting device longitudinally mounted to the center seat and formed with an engaging portion, wherein the at least one adjusting device is expandable relative to the center seat for adjusting a distance between the engaging portion of the at least one adjusting device and the center of the center seat.
Dependencies are inferred from the claim text.