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:
Mar. 17, 2009
Filed:
Feb. 13, 2006
Timothy J. C. O'shea, Seattle, WA (US);
Terence R Ellard, Seattle, WA (US);
Wayne C Higgins, Seattle, WA (US);
Timothy J. C. O'Shea, Seattle, WA (US);
Terence R Ellard, Seattle, WA (US);
Wayne C Higgins, Seattle, WA (US);
Other;
Abstract
A retractable wheel assembly () for a carrier () is disclosed wherein the wheels () are rotatably mounted in cowls (), which are pivotably disposed in wheel wells (L,R) on a housing. The cowls are connected with a cowl axle assembly () that includes a coil spring, preferably a constant force spring () that biases the cowls towards a retracted position. The constant force spring is connected to a retractable handle (), preferably with a spring engagement member (), such that extending the retractable handle will bias the cowls towards an extended position, wherein the wheels extend out of the wheel wells for use.