Sealing cap

A sealing cap for a lock having a key receiving passage therein, comprising:

• a circular sealing member overlying the passage, the sealing member having a first slit therein, extending from the outer surface of the member to about the midline of the member at a first oblique angle and a second slit extending from the midline to the inner surface of the member at a second oblique angle equal and extending in a direction parallel to the first oblique angle, wherein the size of the slits, the position of the openings at the ends of the slits and the midline, and the flexibility of the walls of the slit with respect to each other are adapted to seal the passage and permit the insertion of a key through the slits into the passage;
• wherein the openings at the ends of the slits on the inner and outer surface of the sealing member are substantially in the center thereof;
• and
• means for sealingly mounting the sealing member on the lock for rotation in unison with the key, said latter means comprising:
• an enclosure member adapted at one end to be threadedly mounted to the cylinder of the lock and the other end to enclose the sealing member;
• and
• a cap member adapted to engage the other end of the enclosure member and maintain the sealing member within the enclosure member.

A sealing cap for a lock having a key receiving passage therein comprising:

• a circular sealing member overlying the passage, comprising two identical cover members which engagingly mate at their inner surfaces to form a midline;
• the sealing member having a first slit therein, extending from the outer surface of the sealing member to about the midline at a first oblique angle and a second slit extending from the midline to the inner surface of the sealing member at a second oblique angle equal and in a direction parallel to the first oblique angle, wherein the size of the slits, the position of the openings at the ends of the slits and the midline, and the flexibility of the walls of the slits with respect to each other are adapted to seal the passage and permit the insertion of a key through the slits into the passage;
• wherein the openings at the ends of the slits on the inner and outer surface of the sealing member are substantially in the center thereof;
• means for sealingly mounting the sealing member on the lock for rotation in unison with the key, said latter means comprising:
• an enclosure member adapted at one end to be threadedly mounted to the cylinder of the lock and adapted at the other end to enclose the sealing member;
• and
• a cap member adapted to engage the other end of the enclosure member and maintain the sealing member within the enclosure member.

A sealing cap for a lock having a key receiving passage therein comprising:

• a sealing member overlying the passage, comprising two identical cover members which engagingly mate at their inner surfaces to form a midline, each cover member having at least one plug and socket formed in the inner surface which matingly engages the socket and plug of the other cover member;
• the sealing member having a first slit therein, extending from the outer surface of the member to about the midline at a first oblique angle, and a second slit extending from the midline to the inner surface of the sealing member at a second oblique angle equal to the first oblique angle, wherein the size of the slits, the position of the openings at the ends of the slits and the midline, and the flexibility of the walls of the slits with respect to each other are adapted to seal the passage and permit the insertion of a key through the slits into the passage;
• wherein the openings at the ends of the slits on the inner and outer surface of the sealing member are substantially in the center thereof;
• means for sealingly mounting the sealing member on the lock for rotation in unison with the key, said latter means comprising:
• an enclosure member adapted at one end to be threadedly mounted to the cylinder of the lock and adapted at the other end to enclose the sealing member;
• a cap member adapted to engage the other end of the enclosure member and maintain the sealing member within the enclosure member;
• and
• a key skirt means adapted to sealingly fit on the key and sealingly mate with the outer surface of the sealing member while the key is in the slit and key receiving passage.