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. 02, 2006
Filed:
Jun. 30, 2004
Herbert Keppner, Colombier, CH;
Rudolf Buser, Grabs, CH;
Frank Zumkehr, Frutigen, CH;
Juergen Burger, Ipsach, CH;
Herbert Keppner, Colombier, CH;
Rudolf Buser, Grabs, CH;
Frank Zumkehr, Frutigen, CH;
Juergen Burger, Ipsach, CH;
Codman & Shurtleff, Inc., Raynham, MA (US);
Abstract
A thermal flow sensor has a first, second and third substrate, each having a first side and a second opposite side. The first substrate is connected to the second substrate such that the second side of the first substrate abuts the first side of the second substrate. The third substrate is connected to the second substrate such that the second side of the second substrate abuts the first side of the third substrate. The second substrate has a groove formed therein so as to form a conduit bounded by the second substrate and the second side of the first substrate and the first side of the third substrate. A heater is disposed on the first side of the first substrate opposed to the conduit. A first temperature sensor is disposed on the first side of the first substrate opposed to the conduit. A second temperature sensor is disposed on the first side of the first substrate opposed to the conduit. A first recess is formed in at least one of the first side and the second side of the first substrate between the heater and one of the first temperature sensor and the second temperature sensor.