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:
Jun. 21, 1988
Filed:
Feb. 24, 1987
Ernst-Friedrich Ischebeck, Ennepetal, DE;
Joachim Isenberg, Ennepetal, DE;
Friedrich Ischebeck GmbH, Ennepetal, DE;
Abstract
A trench shoring box unit having hollow partition walls and internal support webs. The partition walls positioned spaced apart and facing each other and connected together by adjustable length braces. The partition walls are constructed of aluminum and have a tongue-and-groove joint formed on the longitudinal edges for interlocking with adjacent partition walls. The transverse edges of each partition wall tightly engages a recess formed on one side of shoe bars. A flange is formed on the other side of the shoe bar and projects outwardly beyond the surface of the partition wall along the transverse edge. The adjustable length braces are connected to the flanges.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile