Title:
SAW BLADE TOOTH FORM FOR ABUSIVE CUTTING APPLICATIONS
Document Type and Number:
WIPO Patent Application WO/2012/003378
Kind Code:
A3
Abstract:
A recip saw blade has a blade body and a cutting edge extending along the blade body and defined by a repeating pattern of two consecutive teeth suitable for abusive cutting applications. The blade defines a relatively coarse tooth pitch. The two consecutive teeth, which may be bi-metal, include a high tooth and a relatively low tooth in comparison to the high tooth. Each high tooth and low tooth include a primary clearance surface defining a relatively shallow primary clearance angle that is about 28° or less, and a secondary clearance surface defining a relatively steep secondary clearance angle in comparison to the primary clearance angle. The primary clearance angle of the high tooth is steeper than the primary clearance angle of the low tooth, such as between about 23° and 28°, and the secondary clearance angle of the high tooth is shallower than the secondary clearance angle of the low tooth.
Inventors:
ELLISTON ASIF (US)
KORB WILLIAM B (US)
HAMPTON STEPHEN A (US)
KORB WILLIAM B (US)
HAMPTON STEPHEN A (US)
Application Number:
PCT/US2011/042681
Publication Date:
April 11, 2013
Filing Date:
June 30, 2011
Export Citation:
Assignee:
IRWIN IND TOOL CO (US)
ELLISTON ASIF (US)
KORB WILLIAM B (US)
HAMPTON STEPHEN A (US)
ELLISTON ASIF (US)
KORB WILLIAM B (US)
HAMPTON STEPHEN A (US)
International Classes:
B27B33/06
Foreign References:
| US20080307936A1 | 2008-12-18 | |||
| US3661037A | 1972-05-09 |
Other References:
See also references of EP 2589018A4
Attorney, Agent or Firm:
GIARRATANA, Mark, D. et al. (LLPCityplace 1,185 Asylum Stree, Hartford CT, US)
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