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:
Dec. 11, 2012
Filed:
Oct. 11, 2007
Applicants:
John Wentworth Bucknell, Indooroopilly, AU;
Robert Wentworth Bucknell, Daisy Hill, AU;
Inventors:
John Wentworth Bucknell, Indooroopilly, AU;
Robert Wentworth Bucknell, Daisy Hill, AU;
Assignee:
Technofast Industries Pty. Ltd., Richlands, Queensland, AU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B 43/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An axially expanding spacer () has respective first and second spacer rings () with complementary helical ramped faces () and abutment faces (). By relative rotation of the spacer rings (), the height of the spacer (), between annular faces () can be expanded or contracted. Compression springs () between the abutment faces () urge the spacer () to its 'expanded' configuration.