Masonry anchor device
US6332741A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 2000 |
| Grant date | Dec 25, 2001 |
| Priority date | — |
| Expiry date | Sep 19, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B25/0078
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An improved anchor device or fastening member which is particularly suited for use in the attachment of various fixtures and equipment to masonry, concrete, and other hard and/or friable substrates includes a head and a shank depending therefrom. The shank has a first threaded portion having a predetermined thread angle and a predetermined hardness, and a second threaded portion having a predetermined thread angle and a predetermined hardness. The first threaded portion is proximate to the head and the second threaded portion extends from the first threaded portion. The thread angle of the first threaded portion is different than the thread angle of the second threaded portion. In addition, the hardness of the first threaded portion is softer than the hardness of the second threaded portion. This provides for a more ductile anchorage when the fastening member is engaged with the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.