Abstract:
This invention relates to an intravaginal fertility plug, for use by both humans and animals, constructed from regions consisting of impermeable and permeable, polymeric film membrane covering, completely or partially, an elastically deformable and compressible interior, which, because of pressure from the vaginal walls on the unit (forming a seal), can be used to promote fertility by temporarily sealing in semen in the female reproductive tract. A lubricant can be used with the intravaginal fertility plug to facilitate insertion into and removal from the vagina; the lubricant would enhance the seal formed between the unit's surface and the vaginal wall and may contain medication itself. The intravaginal fertility plug, not intended for overly prolonged use in the vaginal should be one-time use, and can, upon removal, be discarded.
Abstract:
A buoyant boom having: an elongate band extending across a water surface; floats rotatably mounted to the band with rotary bearings between each float and the band; and anchors securing the band at its ends or middle portion to a support, such as a river bed or a river bank structure for example.
Abstract:
An antenna shroud or clutter fence has edge treatment for redirecting or absorbing energy which would otherwise be diffracted in an undesired direction. The edge treatment can include an array of corrugations which are about .lambda./4 deep for scattering sidelobes. The array of corrugations can be parallel to either the E-wave component or the H-wave component. Alternatively, the edge treatment can include an array of antennas encased in a dielectric extension.