DANIEL A BOARDMAN
Engineering in Swansea, MA
License number
Massachusetts 51577
Issued Date
Dec 31, 2014
Expiration Date
Jun 30, 2018
Type
Fire Protection Engineer
Address
Address
Swansea, MA 02777
Personal information
See more information about DANIEL A BOARDMAN at radaris.comName
Address
Phone
395 Ocean Grove Ave, Swansea, MA 02777
Fall River, MA
Professional information
Automatic High Negative Pressure Relief Valve And Chest Drainage Units Using Same
US Patent:
2004003, Feb 12, 2004
Filed:
Aug 7, 2002
Appl. No.:
10/213785
Inventors:
Trinh Phung - Attleboro MA, US
Daniel Boardman - Swansea MA, US
Daniel Boardman - Swansea MA, US
Assignee:
Genzyme Corporation
International Classification:
A61M001/00
US Classification:
604/540000
Abstract:
Featured is an automatic high-negative pressure relief valve and its use in combination with an apparatus for draining fluid from a body. In broad terms the negative pressure relief valve includes a biasing mechanism, a moveable member acted upon by the biasing mechanism and a seating surface. When the pressure within a chamber, in which a portion of the relief valve is in fluid communication with, is less than a predetermined negative pressure, the moveable member is moved by the biasing mechanism to sealing engage the seating surface and when the pressure is at or above the predetermined value, the restoring force of the biasing mechanism is overcome and the moveable member moves away from the seating surface. In an exemplary embodiment, the biasing mechanism is a spring, diaphragm or wave washer.
Automatic High Negative Pressure Relief Valve And Chest Drainage Units Using Same
US Patent:
7524311, Apr 28, 2009
Filed:
May 25, 2004
Appl. No.:
10/852228
Inventors:
Trinh D. Phung - Attleboro MA, US
Daniel A. Boardman - Swansea MA, US
Daniel A. Boardman - Swansea MA, US
International Classification:
A61M 1/00, G05D 11/00, F16K 17/00
US Classification:
604320, 604317, 604319, 1371163, 137458
Abstract:
Featured is an automatic high-negative pressure relief valve and its use in combination with an apparatus for draining fluid from a body. In broad terms the negative pressure relief valve includes a biasing mechanism, a moveable member acted upon by the biasing mechanism and a seating surface. When the pressure within a chamber, in which a portion of the relief valve is in fluid communication with, is less than a predetermined negative pressure, the moveable member is moved by the biasing mechanism to sealing engage the seating surface and when the pressure is at or above the predetermined value, the restoring force of the biasing mechanism is overcome and the moveable member moves away from the seating surface. In an exemplary embodiment, the biasing mechanism is a spring, diaphragm or wave washer.