Coupling for drilling machine with dust extractor
First Claim
Patent Images
1. A drilling device comprising(a) a housing having a housing wall;
- (b) a hollow, cylindrical drive member accommodated in said housing and having a drive member wall, an interior and opposite first and second end portions;
(c) two axially spaced bearings mounted in said housing and supporting said drive member for rotation relative to said housing;
(d) a tubular shank adjoining said first end portion of said drive member and being torque-transmittingly connected therewith;
said tubular shank having an interior being in communication with the interior of said drive member;
(e) a drill bit carried on said tubular shank;
(f) a port means passing through said housing wall for passage of drill cuttings from an interior of said housing;
(g) an opening provided in said drive member wall between said bearings for maintaining communication between the interior of said drive member and the interior of said housing to provide for passage of drill cuttings from the interior of said drive member to the interior of said housing;
said opening in said drive member wall having a border portion oriented away from said tubular shank;
(h) a flow deflection member supported in said drive member in said second end portion thereof;
said flow deflection member including a flow deflection surface extending to said border portion of said opening in said drive member wall; and
(i) means for preventing a clogging of a flow path of drill cuttings from the interior of said tubular shank to the interior of said drive member.
1 Assignment
0 Petitions
Accused Products
Abstract
Drilling device with force transmission from a hollow-cylindrical drive member to a tubular shank equipped with a drill bit wherein the drive member (3) is rotatably mounted in a housing (41), with the housing (41) being provided with a port (42) for a suction and/or flushing device. The interior of the drive member (3) is connected with the port (42) by way of holes in its wall and the flow path is provided with means (11, 27, 28, 29, 40, 453, 495, 496) for preventing clogging of the flow path.
28 Citations
16 Claims
-
1. A drilling device comprising
(a) a housing having a housing wall; -
(b) a hollow, cylindrical drive member accommodated in said housing and having a drive member wall, an interior and opposite first and second end portions; (c) two axially spaced bearings mounted in said housing and supporting said drive member for rotation relative to said housing; (d) a tubular shank adjoining said first end portion of said drive member and being torque-transmittingly connected therewith;
said tubular shank having an interior being in communication with the interior of said drive member;(e) a drill bit carried on said tubular shank; (f) a port means passing through said housing wall for passage of drill cuttings from an interior of said housing; (g) an opening provided in said drive member wall between said bearings for maintaining communication between the interior of said drive member and the interior of said housing to provide for passage of drill cuttings from the interior of said drive member to the interior of said housing;
said opening in said drive member wall having a border portion oriented away from said tubular shank;(h) a flow deflection member supported in said drive member in said second end portion thereof;
said flow deflection member including a flow deflection surface extending to said border portion of said opening in said drive member wall; and(i) means for preventing a clogging of a flow path of drill cuttings from the interior of said tubular shank to the interior of said drive member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
Specification