Title:
SAMPLE PREPARATION SAW
Document Type and Number:
WIPO Patent Application WO/2014/028664
Kind Code:
A3
Abstract:
A saw (10) has a system (12) for sensing the torque on a cutting blade (14) to signal when the blade begins to cut material. The saw has a drive belt (24) extending between a driven wheel (22) and a drive wheel (20) and a belt tensioner (18) that engages a side of the belt and maintains tension in the belt. The belt tensioner is movable to maintain the tension in the belt. A control system calculates the movement of the belt tensioner. The saw also has a system (31) for determining the size of the sacrificial blade. A through beam photoelectric emitter (32) and receiver (34) pair are positioned on opposite sides of the blade such that a largest cutting blade is moved above the beam regardless of a horizontal position of the cutting blade and a sensor (35) senses a vertical position of the axis (A14) of the blade. The sensor senses the vertical position of the blade axis when the blade is moved above the beam.
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Inventors:
ADAIR KURT G (US)
CECKOWSKI DOUGLAS A (US)
HART MICHAEL F (US)
CECKOWSKI DOUGLAS A (US)
HART MICHAEL F (US)
Application Number:
PCT/US2013/055011
Publication Date:
May 01, 2014
Filing Date:
August 14, 2013
Export Citation:
Assignee:
ILLINOIS TOOL WORKS (US)
International Classes:
B23D59/00; F16H7/12; G01L5/10
Domestic Patent References:
| WO2008025045A1 | 2008-03-06 | |||
| WO2006064369A1 | 2006-06-22 | |||
| WO1999045351A1 | 1999-09-10 | |||
| WO1990012669A1 | 1990-11-01 |
Foreign References:
| DE19622374A1 | 1997-12-11 | |||
| EP2476531A1 | 2012-07-18 | |||
| GB1355399A | 1974-06-05 | |||
| JPH03219901A | 1991-09-27 | |||
| JPH08164515A | 1996-06-25 | |||
| DD270572A1 | 1989-08-02 | |||
| DE3905949A1 | 1990-08-30 | |||
| US20090244528A1 | 2009-10-01 | |||
| FR2899685A1 | 2007-10-12 | |||
| DE4321230A1 | 1995-03-02 | |||
| US4432260A | 1984-02-21 | |||
| US20040165197A1 | 2004-08-26 | |||
| JP2006287111A | 2006-10-19 |
Attorney, Agent or Firm:
HAUPTMAN, Benjamin J. (Suite 1400Alexandria, Virginia, US)
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