The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 2001
Filed:
Feb. 11, 2000
Applicant:
Inventor:
Richard C. Devine, Southwick, MA (US);
Assignee:
Olympic Manufacturing Group, Inc., Agawam, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B 2/500 ; F16B 3/504 ;
U.S. Cl.
CPC ...
F16B 2/500 ; F16B 3/504 ;
Abstract
A self-drilling, self-tapping screw for concrete blocks which includes a shank having a proximal portion equipped with a double lead, self-tapping spiral thread and an unthreaded portion which connects the threaded shank portion to a carbide drill tip in an axially spaced relationship. The length of the unthreaded portion of the shank is selected to allow the drill tip to form a clearance hole extending through the concrete block prior to engagement of the threaded shank portion with the clearance hole.