Surgery – Body protecting or restraining devices for patients or infants – Head or face protector
Patent
1989-07-24
1990-04-03
Hafer, Robert A.
Surgery
Body protecting or restraining devices for patients or infants
Head or face protector
181130, A61F 1102
Patent
active
049131656
ABSTRACT:
An underwater eardrum protector for use in underwater diving by a person having a perforated eardrum includes an inflatable bladder insertable in an ear canal of the person; a tube for supplying a non-compressible fluid to the bladder so as to inflate the same; a housing fluidly connecting the bladder to the tube; and a pump which supplies the non-compressible fluid to the tube, the pump including a cylinder having an inner wall, a piston slidable in the cylinder so as to define a variable volume chamber with the inner wall of the cylinder, the chamber being in fluid communication with the tube, O-rings connected with the piston for providing a fluid seal between the piston and the inner wall of the cylinder so as to seal the variable volume chamber, and a piston rod for slidably moving the piston in the cylinder so as to reduce the volume of the chamber and force the non-compressible fluid in the chamber through the tube and into the bladder, the piston rod being connected with the piston in a freely rotatable manner and being threadedly connected with the cylinder.
REFERENCES:
patent: 2876767 (1959-03-01), Wasserman
patent: 3110356 (1963-11-01), Mendelson
patent: 3505999 (1970-04-01), Harvey et al.
patent: 3602654 (1971-08-01), Victoreen
patent: 4006796 (1977-02-01), Coehorst
patent: 4060080 (1977-11-01), Akiyama
patent: 4299237 (1981-11-01), Foti
patent: 4406282 (1983-09-01), Parker et al.
Cofsky Lynda M.
Fishgoyt Michael
Hafer Robert A.
Heimur Elena
Langsam Andrew S.
LandOfFree
Underwater eardrum protector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Underwater eardrum protector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Underwater eardrum protector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1350973