Cutting by use of rotating axially moving tool – Means to drive tool
Patent
1995-02-17
1997-03-11
Bishop, Steven C.
Cutting by use of rotating axially moving tool
Means to drive tool
384477, 409231, 433115, 433126, A61C 105, A61C 108, B23B 4704
Patent
active
056094450
ABSTRACT:
In a straight motorized handpiece (101), in particular for medical purposes, preferably for a medical or dental laboratory, with a clamping device (106) arranged in a sleeve-like casing (111) for the selective clamping of tools (105) which can be inserted from the front into the handpiece (101), whereby the clamping device (106) is arranged on a drive shaft (107), which is rotatably mounted in the casing (111) by means of a rearward and a forward roller bearing (113, 114), whereby for axially retaining the drive shaft (107) a first shoulder (143) is provided on the casing (111) or on attachments thereto, against which the outer ring of one of the roller bearings (113) bears, and there is arranged a releasible arresting shoulder (145) opposite to the first shoulder (143) at an axial spacing, the first shoulder (143) is arranged on the outside of the outer ring of the associated roller bearing (113) and the arresting shoulder (145) is arranged on the outside on the other roller bearing (114), the drive shaft (107) being mountable and mountable together with the roller bearings (113, 114), as a structural unit, from that side of the casing (111) on which the releasible arresting shoulder (145) is located.
REFERENCES:
patent: 2246471 (1941-06-01), Searles
patent: 3418715 (1968-12-01), Ellis
patent: 3758948 (1973-09-01), Bareth
patent: 4231739 (1980-11-01), Iudica
patent: 4245985 (1981-01-01), Eibofner et al.
patent: 4249896 (1981-02-01), Kerfoot, Jr.
Bishop Steven C.
Kaltenbach & Voigt GmbH & Co.
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