| Patent Number |
Title Of Patent |
Date Issued |
| D571450 |
Deflecting louver with damper |
June 17, 2008 |
|
| D566261 |
Air diffuser |
April 8, 2008 |
|
| D521631 |
Air diffuser |
May 23, 2006 |
|
| 6388346 |
Axial fluid flow inducing device with multiple magnetically driven impellers |
May 14, 2002 |
| A multiple impeller flow inducing device in which driver coils are intermittently energized in timed relation to rotation of the impellers to interact with permanently magnetized portions of the impeller to rotate the same. The impellers can be rotated in opposite directions or in the |
| 6194798 |
Fan with magnetic blades |
February 27, 2001 |
| A DC driven fan with blades made of magnetized material and permanently magnetized in the radial direction and cooperating with a plurality of electromagnetic stator coils mounted external to the outer fan edges. Adjacent blades have alternate N-S, S-N radial magnetic orientations. In |
| 6139277 |
Motorized fan |
October 31, 2000 |
| A motor drives a hub having axially extending blind tapered recesses to receive tapered shoes on a plurality of blades, and threads which fasten a ring that presses the shoes axially into the recesses have a hand-direction that tend to tighten in response to the rotation of the shaft |
| 4970836 |
Access opening closure device |
November 20, 1990 |
| A closure device for access openings having a face plate attractively complementing the surface in which said opening occurs and manufally driven spring biased latching mechanisms for securing the device in closing relationship to such opening. Optional gasket means and insulative ba |
| 4872400 |
Laboratory work station with controllable environment |
October 10, 1989 |
| Means and methods for maintaining laboratory work stations which have essentially open work areas, free of noxious and malodorous air contaminants by the use of tempered induction air combined with contaminant bearing exhaust air to limit the throughput of more expensive conditioned |
| 4716818 |
Air distribution device |
January 5, 1988 |
| An air outlet having a ball shaped valve member having a central passageway defined therefrom intermediated a convergent entrance and an exit, the transverse area of the entrance being at least 45% greater than the transverse area of the exit. The valve members is rotatable through 3 |
