Invention Grant
US09095800B2 Low profile frame for a filter incorporating a negative pressure check mechanism
有权
用于包含负压检查机构的过滤器的低轮廓框架
- Patent Title: Low profile frame for a filter incorporating a negative pressure check mechanism
- Patent Title (中): 用于包含负压检查机构的过滤器的低轮廓框架
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Application No.: US13944944Application Date: 2013-07-18
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Publication No.: US09095800B2Publication Date: 2015-08-04
- Inventor: Daniel Charles Symons
- Applicant: Scott Technologies, Inc.
- Applicant Address: US FL Boca Raton
- Assignee: Scott Technologies, Inc.
- Current Assignee: Scott Technologies, Inc.
- Current Assignee Address: US FL Boca Raton
- Agent Wyatt B. Pratt
- Main IPC: B01D46/00
- IPC: B01D46/00 ; A62B23/00 ; A62B23/02 ; B01D46/02 ; A62B18/08 ; A62B27/00 ; B01D46/10

Abstract:
A low-profile filter frame is disclosed for maintaining an open filter plenum configuration during normal operation, and for enabling quick and reliable negative pressure testing. The frame has upper and lower halves. A breathing tube in the lower half connects to a respirator port. The upper and lower halves snap together to maintain the structure in an assembled configuration. The halves also include features that bias the halves apart when the device is in the assembled configuration, thereby maintaining the breathing tube open. To perform a fit test, a force is applied to an outer surface of the upper half, which moves the halves together, in opposition to the bias, so that the upper half seals against the breathing tube. The frame can be provide in as a single-piece, with a living hinge connecting upper and lower halves, or the upper and lower halves can be separate pieces.
Public/Granted literature
- US20130298512A1 LOW PROFILE FRAME FOR A FILTER INCORPORATING A NEGATIVE PRESSURE CHECK MECHANISM Public/Granted day:2013-11-14
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