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:
Nov. 01, 1994
Filed:
Mar. 01, 1993
Applicant:
Inventors:
Guy M Phillipps, Plympton, AU;
Wayne A Harris, Plympton, AU;
Assignee:
Philmac Pty. Ltd., , AU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65D / ;
U.S. Cl.
CPC ...
220-8 ; 220484 ; 220-403 ; 220-37 ; 404 26 ;
Abstract
A cover height adjuster which can be used for a boundary box, a manhole cover, etc. in a paved location having two rings with interengaging sloping castellated end surfaces extending around the peripheries of at least three sectors of the rings and can vary the height of the upper ring upon its rotation over the lower ring. The upper surface of the upper ring may have a slope which engages a sloping surface of a cover assembly, so that relative rotation can also vary the slope of the cover.