Invention Grant
- Patent Title: Screw
- Patent Title (中): 拧
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Application No.: US11194632Application Date: 2005-08-02
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Publication No.: US07695228B2Publication Date: 2010-04-13
- Inventor: Arnold Craven
- Applicant: Arnold Craven
- Applicant Address: US IA Council Bluffs
- Assignee: Phillips Fastener, LLC
- Current Assignee: Phillips Fastener, LLC
- Current Assignee Address: US IA Council Bluffs
- Agency: Dickstein Shapiro LLP
- Main IPC: F16B35/04
- IPC: F16B35/04

Abstract:
A fastener for securing remnant-producing materials, a method of manufacturing the fastener, and a method of using the fastener are provided. The fastener is configured such that in use any remnants or slivers produced by rotation of the fastener are forcibly driven into the surface of the material. In one aspect, the fastener has two separate threaded portions, a first or lower threaded portion and a second or upper threaded portion. The threads on the lower threaded portion have a pitch that is different from the threads on the upper threaded portion. In one embodiment, the lower threaded portion threads have a larger pitch than the threads on the upper threaded portion. In use, after the lower threaded portion is completely inserted into the material, the upper threaded portion of the fastener enters the material. Because the upper threaded portion has threads that have a pitch that is different from the threads on the lower threaded portion, the threads on the upper threaded portion capture the remnants that have been extruded within or onto the surface of the material. As the fastener is completely inserted into the material, the remnants that have been extruded by the lower threaded portion of the fastener are substantially retained in the bore by the upper threaded portion of the fastener.
Public/Granted literature
- US20050265806A1 Screw Public/Granted day:2005-12-01
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