Optical: systems and elements – Mirror – Including specified control or retention of the shape of a...
Reexamination Certificate
2008-05-20
2008-05-20
Pritchett, Joshua L (Department: 2872)
Optical: systems and elements
Mirror
Including specified control or retention of the shape of a...
C359S846000, C359S849000
Reexamination Certificate
active
10906442
ABSTRACT:
An improved device for reflecting, radiating, or receiving electromagnetic radiation, acoustic waves, or other energy forms through the use of a membrane stretched across a lightweight, round, frame structure. A near perfectly round and flat semi-rigid backplane surface (1) and a near perfectly round ring or stack of rings (2) are mutually reinforced, forming a raised circumferential planar surface, and a cavity within. A membrane (3) is attached to the top of the rings, forming one wall of a sealed chamber. A source of sub-ambient pressure (4) is applied to the chamber, causing a primary uniform deformation in the membrane for the purpose of manipulating electromagnetic radiation, acoustic waves, or other energy. The backplane surface also deforms uniformly, increasing the strength of the structure. A flat, rigid floating batten (5) prevents waves or wrinkles from forming in the membrane material. A circumferential heating element (6) and insulation (7) provides tensioning of the membrane by slightly controlling the circumference of the device.
REFERENCES:
patent: 2300251 (1942-10-01), Flint
patent: 2952189 (1960-09-01), Pajes
patent: 3031928 (1962-05-01), Kopitko
patent: 3056131 (1962-09-01), Mcreary
patent: 3610738 (1971-10-01), Bochman
patent: 3687524 (1972-08-01), Martinez
patent: 3757479 (1973-09-01), Martinez
patent: 3877139 (1975-04-01), Martinez
patent: 3880500 (1975-04-01), Kojabashian
patent: 4033676 (1977-07-01), Brantley, Jr. et al.
patent: 4046462 (1977-09-01), Fletcher et al.
patent: 4068777 (1978-01-01), Humphrey
patent: 4130234 (1978-12-01), Schmidt
patent: 4352112 (1982-09-01), Leonhardt et al.
patent: 4540251 (1985-09-01), Yau et al.
patent: 4741609 (1988-05-01), Sallis
patent: 4987826 (1991-01-01), Deppert et al.
patent: 5590497 (1997-01-01), Moore
patent: 5680262 (1997-10-01), Soliday et al.
patent: 5813830 (1998-09-01), Smith et al.
patent: 5990851 (1999-11-01), Henderson et al.
patent: 6065842 (2000-05-01), Fink
patent: 6332687 (2001-12-01), Carreras et al.
patent: 6716017 (2004-04-01), Papadoulas
patent: 6795260 (2004-09-01), Herren et al.
LandOfFree
Stretched membrane device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stretched membrane device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stretched membrane device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3957016