Patent · US Expired

Interference fit doorjamb reinforcement apparatus

US6557914B2 · kind B2 · utility

2Cited by

5References

5Claims

0Family size

Assignees

Scott K. Hamilton · US
Michelle S. Hamilton · US

Inventors

Scott Hamilton · Austin, US
Michelle Hamilton · Alexandria, US

Key dates

Filing date	Jan 26, 2001
Grant date	May 6, 2003
Priority date	—
Expiry date	Jan 26, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T292/79
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A doorjamb strengthening device comprising an interior metal plate (1), a primary interior cylindrical reinforcing member (5), an aperture (11), a secondary cylindrical reinforcing member (6), an exterior metal plate (2), a primary exterior cylindrical reinforcing member (9), and a secondary exterior cylindrical connecting member (10). Interior metal plate is fastened to exterior metal plate by means of an interference fit between primary interior cylindrical reinforcing member and primary exterior cylindrical reinforcing member and secondary interior cylindrical connecting member and secondary exterior cylindrical connecting member.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.