Title: Apparatus for removing the drillings from the drilling site of a drill

Abstract: In the process and apparatus for removing the drillings from the drilling te of a drill described, removal is effected through a conduit, extending along the axis of a drill and possibly an adapter for a drilling machine, by a vacuum provided by a compressed-air stream traversing the removal conduit, said compressed air also serving to blow the drillings sucked into the conduit out of the conduit and away from the drilling site.

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Inventors: Dellenberg, Hugo (Moordeich, DT)

Application Number: 565568
Filing Date: 1975-04-07
Publication_date: 1977-07-19
Assignee: Gebruder Heller Verwaltungsgesellschaft mit beschrankter Haftung (Uphusen, DT)
Primary Class(es): 173/75 175/71, 175/213, 279/20, 408/58
Other Classes:
US Patent Ref:

1132276	Mar, 1915	Kessel	173/60.
1154977	Sep, 1915	Dawley	173/60.
1263835	Apr, 1918	App	175/212.
1317693	Oct, 1919	Flannery et al.	15/409.
2019332	Oct, 1935	Atkins	175/213.
2201270	May, 1940	McIntyre	175/213.
2329330	Sep, 1943	Brailey	175/213.
3057417	Oct, 1962	Sandvig	173/60.
3198265	Aug, 1965	Voelkerding	175/213.
3256944	Jun, 1966	Holzapfel	173/75.

Other Refs: 644,995319,179

May, 1937	DD
Sep, 1929	UK

Primary Examiner: Purser, Ernest R.
Assistant Examiner:
Attorney: Hopgood, Calimafde, Kalil, Blaustein & Lieberman