Surgery – Body protecting or restraining devices for patients or infants – Head or face protector
Patent
1994-08-16
1995-11-21
Hafer, Robert A.
Surgery
Body protecting or restraining devices for patients or infants
Head or face protector
128864, A61F 1106
Patent
active
054677840
ABSTRACT:
A pressure regulating earplug for regulating the rate of change of pressure inside an ear to minimize the pressure differential between the middle ear and a volume of the external ear cavity adjacent the ear drum is made of an ear plug adapted to fit tightly within the external ear cavity with no or minimal air leakage, and disposed within the earplug is a pressure regulator with a slow leak rate. Examples of the material which causes the pressure regulation include porous metal and porous ceramic material.
REFERENCES:
patent: 2053995 (1936-09-01), Hoey
patent: 2427664 (1947-09-01), Dunbar et al.
patent: 2437490 (1948-03-01), Watson et al.
patent: 2670737 (1954-03-01), Cantor
patent: 2717596 (1955-09-01), Knight
patent: 3131241 (1964-04-01), Mendelson
patent: 3565069 (1971-02-01), Miller
patent: 3736929 (1973-06-01), Mills
patent: 3800791 (1974-04-01), Visor
patent: 3872559 (1975-03-01), Leight
patent: 4053051 (1977-10-01), Brinkhoff
patent: 4143657 (1979-03-01), Takeda
patent: 4338929 (1982-02-01), Lundin et al.
patent: 4349082 (1982-09-01), Gastmeier
patent: 4353364 (1982-10-01), Woods
patent: 4540063 (1985-09-01), Ochi et al.
patent: 5074375 (1991-12-01), Grozil
Mossner, W. R., Applications and Properties of Controlled Porosity PM Parts, Metal Powder Report, vol. 43, No. 1, Jan. 1988.
Anderson, J. E., Acoustical-Impedance Characteristics of Sintered Stainless Steel, Journal of The Acoustical Society of America, vol. 36, No. 5, 811-815, May 1964.
Smugeresky, J. E., et al., Prediction of Gas Permeation From Microstructures of Controlled-Density Sintered Media, Modern Developments in Powder Metallurgy, vol. 15 Principles & Processes, 1984 IPMC Proceedings.
Coors Ceramics Company, Porous Ceramics.
Johnson Chris
Mobley J. Phil
O'Connell Drew
Soli Sigfried D.
Zhang Chaoying
Hafer Robert A.
O'Neill Michael
LandOfFree
Pressure-regulating ear plug does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pressure-regulating ear plug, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure-regulating ear plug will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1130891