Slip-resistant contraceptive male condom
AssigneeNew Designs Corporation
InventorDavid A. Delson
Life of this patent
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Abstract
The disclosed sheath-like contraceptive condom, even in a rolled-up condition suitable for packaging or use, has a high coefficient of friction on the surface that comes into contact with penile skin, particularly the portion of this surface contacting the glans and preferably also the shaft of the penis. The outer surface of the rolled condom, on the other hand, preferably has anti-blocking or release properties, so that it can be rolled up and unrolled without difficulty. The high coefficient of static friction (>0.70, preferably > about 1.0, according to ASTM Designation D 1894-90) on the interior surface provides reliable frictional engagement of at least the glans and preferably also the shaft of the penis, so that the condom clings to the contours of the penis and resists slippage during intercourse.
Claims27
A rolled contraceptive condom for a human penis in a rolled-up condition suitable for packaging, comprising:
- a sheath having, in the unrolled condition, a generally hemispherical closed, distal end, a generally tubular distal portion extending proximally from said closed distal end, and an open, proximal end, the generally tubular distal portion extending proximally to surround and fictionally engage an erect human penis when the condom is unrolled, said sheath having been rolled up outwardly upon itself, from said proximal end toward said distal end, the interior surfaces of at least said generally tubular distal portion being substantially free of any friction-reducing substance, being substantially free of measurable tack at an ambient temperature of about 40.degree. C. and having, while the condom is in said rolled-up condition, a coefficient of static friction, as determined by ASTM Designation D 1894-90, which is >0.70;
- the material from which said sheath is comprised also having a said coefficient of static friction of >0.70.
A rolled condom according to claim 20, wherein the outermost surface of at least said distal portion comprises a coating comprising an anti-blocking material deposited on said outermost surface of at least said distal portion, and said anti-blocking material is sufficiently adhered to said outermost surface to substantially prevent transfer of said anti-blocking material to the interior surfaces of said condom when said condom is rolled up or unrolled.
A rolled contraceptive condom for a human penis in a rolled-up condition suitable for packaging, comprising:
- a sheath having, in the unrolled condition, a generally hemispherical closed, distal end, a generally tubular distal portion extending proximally from said closed distal end, and an open, proximal end, the generally tubular distal portion extending proximally to surround and fictionally engage an erect human penis when the condom is unrolled, said sheath having been rolled up outwardly upon itself, from said proximal end toward said distal end, the interior surfaces of at least said generally tubular distal portion having deposited thereon a friction-enhancing substance, being substantially free of measurable tack at an ambient temperature of about 40.degree. C. and having, while the condom is in said rolled-up condition, a coefficient of static friction, as determined by ASTM Designation D 1894-90, which is >0.70.
A rolled contraceptive condom for a human penis in a rolled-up condition suitable for packaging, comprising:
- a sheath having, in the unrolled condition, a generally hemispherical closed, distal end, a generally tubular distal portion extending proximally from said closed distal end, and an open, proximal end, the generally tubular distal portion extending proximally to surround and fictionally engage an erect human penis when the condom is unrolled, said sheath having been rolled up outwardly upon itself, from said proximal end toward said distal end, the interior surfaces of at least said generally tubular distal portion having a friction-enhancing pattern thereon, being substantially free of measurable tack at an ambient temperature of about 40.degree. C., and having, while the condom is in said rolled-up condition, a
- coefficient of static friction, as determined by ASTM Designation D 1894-90, which is >0.70, said coefficient of static friction being provided by said friction-enhancing pattern on said interior surfaces of at least said generally tubular distal portion.
Dependencies are inferred from the claim text.