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:
May. 15, 2012
Filed:
Aug. 06, 2007
John A. Lane, Weedsport, NY (US);
Scott A. Martin, Warners, NY (US);
William J. Smirles, Deerfield, IL (US);
Braxton Lathrop, Lake Oswego, OR (US);
Andrew M. Robottom, Beaverton, OR (US);
John A. Lane, Weedsport, NY (US);
Scott A. Martin, Warners, NY (US);
William J. Smirles, Deerfield, IL (US);
Braxton Lathrop, Lake Oswego, OR (US);
Andrew M. Robottom, Beaverton, OR (US);
Welch Allyn, Inc., Skaneateles Falls, NY (US);
Abstract
An automatic blood pressure monitor having a housing containing a first water and air tight chamber and a second air supply chamber, the chambers being separated by a common wall. Pneumatic equipment is mounted in the first chamber having a flow circuit for inflating and deflating a blood pressure cuff. A filtering unit is mounted in the common wall for retaining particulate material and moisture that is exchanged between the two chambers. The flow circuit has an air inlet port and an air exhaust port which are both located adjacent to the filter contained in the filtering unit whereby particulate material and moisture drawn into the flow circuit is retained upon the filter during inflation cycle and the particulate material and moisture retained on the filter is blown back into the air supply chamber during the deflation cycle. A drain is mounted in the floor of the air supply chamber through which particulate material and moisture collected in the chamber is discharged to the surrounding ambient. A restricted opening is provided in an outer wall of the air supply chamber which allows ambient air to enter the chamber through a tortuous path of travel.