F - Mech Eng,Light,Heat,Weapons – 24 – C
Patent
F - Mech Eng,Light,Heat,Weapons
24
C
F24C 15/20 (2006.01) F24F 7/00 (2006.01)
Patent
CA 2049415
This invention provides apparatus for sensing the extent to which the sash or sashes covering the access opening of a fume hood are open. The apparatus includes a source of electromagnetic energy at a selected AC frequency below 10 6 MHz, with a preferred frequency range being from 10 KHz to 100 KHz. The source preferably includes a wire coil connected to an, oscillator of the selected frequency with the detector for the AC signal also preferably including a wire coil. Suitable elements are also provided for controlling the amount of electromagnetic energy from the source wire coil which reaches the detector wire coil as a function of sash opening. For the various embodiments, the apparatus may be arranged (a) with either one or both of the coils mounted in a fixed bar, control elements being mounted to the sashes; (b) with both coals mounted to sashes; or (c) with a single coil, either fixedly mounted or mounted to a sash, being used as both the source and detector coil, control elements being selectively mounted to the sashes. Embodiments which are variations on the three basic types discussed above are also provided.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Phoenix Controls Corporation
LandOfFree
Fume hood sash sensing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fume hood sash sensing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fume hood sash sensing apparatus will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1887655