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.:

US 6886504 B1

PDF
Full Text
Expired
Date of Patent:
May. 03, 2005

Filed:

Oct. 03, 2002
Applicant:

Ian David Johnstone, Sussex, GB;

Inventor:

Ian David Johnstone, Sussex, GB;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01P003/04 ;
U.S. Cl.
CPC ...
Abstract

An engine of reciprocating piston type includes a cylinder block () with one or more cylinders (), each of which receives a respective piston () and is defined by a respective cylinder barrel (), which is integral with the reminder of the cylinder block. The outer surface of each cylinder barrel () carries a plurality of substantially circumferential discontinuous reinforcing ribs, each comprising a plurality of elongate projections () spaced apart by gaps (). Each projection () in each rib is in registry with a gap in the or each adjacent rib, when viewed in the direction of the length of the associated cylinder barrel.


Find Patent Forward Citations

Johnstone, Ian. (2005). Engine of reciprocating piston type (U.S. Patent No. 6886504). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6886504

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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