Detector unit and sensing chamber therefor

US9007222B2 · kind B2 · utility

Assignee

• Google LLC · US

Inventors

• Adam Mittleman · Redwood City, US
• Andrew Goldenson · Palo Alto, US
• William Dong · Redwood City, US
• John Benjamin Filson · San Jose, US
• Anthony M. Fadell · Portola Valley, US
• Matthew Lee Rogers · Los Gatos, US
• Yoky Matsuoka · Palo Alto, US
• Samuel W. Kortz · Palo Alto, US

Key dates

• Filing date: Mar 15, 2013
• Grant date: Apr 14, 2015
• Expiry date: Mar 19, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/4913
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

According to one embodiment, a hazard detector may include a back plate and a front casing coupled to the back plate to define a housing having an interior region and an opening through which air flows into the interior region. A circuit board may be coupled to the back plate and have a plurality of components mounted thereon. A smoke chamber may be mid-mounted on the circuit board, mid-mounting being characterized in the smoke chamber extending through a hole formed in the circuit board such that a top surface of the smoke chamber is positioned above a top surface of the circuit board and a bottom surface of the smoke chamber is positioned below a bottom surface of the circuit board, whereby an interior region of the smoke chamber is accessible to smoke from both the top and bottom surfaces of the circuit board.