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:
Jul. 29, 2014
Filed:
May. 18, 2007
Joe Bisera, Camarillo, CA (US);
Max Harry Weil, Rancho Mirage, CA (US);
Wanchun Tang, Palm Desert, CA (US);
Carlos Castillo, Cathedral City, CA (US);
Joe Bisera, Camarillo, CA (US);
Max Harry Weil, Rancho Mirage, CA (US);
Wanchun Tang, Palm Desert, CA (US);
Carlos Castillo, Cathedral City, CA (US);
Weil Institute of Critical Care Medicine, Rancho Mirage, CA (US);
Abstract
A chest compressor includes a piston () that moves in downward and upward strokes, with the piston undergoing a smooth reversal at the bottom of the downward stroke. A compression spring such as a wave spring (), is positioned to engage the piston only near the end of its downward stroke, to smoothly reverse the piston motion, limit downward force on the patient at the end of the stroke, and avoid a downward pulse due to the momentum of the downwardly-moving piston. A stop () is latchable in an inward position to allow reduction in the piston stroke by engaging an outward flange () on the piston before the piston has moved fully downward.