Condom

Details Condom Condom

1990-03-22

1991-04-09

Hafer, Robert A.

Surgery

Male reproductory tract shields or birth control devices

Condoms

128918, 604347, A61F 604, A61F 544

Patent

active

050055895

ABSTRACT:
A condom has a body, a sperm cell extending forward from the body and a vertical narrow flat neck between the body and the cell for the sperm to pass through in the cell. The sperm cell has an oval shape, the lower portion larger than the upper portion and the height is longer than the neck so that the sperm entering the cell may stay in the lower portion without few possibility to return through the neck to the body. Besides, a groove is provided at the front bottom of the body, conforming to the male sex organ.

REFERENCES:
patent: 2061384 (1936-11-01), Manegold
patent: 2326159 (1943-08-01), Mendel
patent: 2358440 (1944-09-01), Bowman
patent: 2410460 (1946-11-01), Robinson
patent: 3037508 (1962-06-01), Friedman
patent: 4074712 (1978-02-01), Wright
patent: 4840188 (1989-06-01), Heidenfelder
patent: 4846197 (1989-07-01), Benjamin
patent: 4898184 (1990-02-01), Skurkovich

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