Identification stamp for compact discs

Claim 2

An identification stamp for use on compact discs having a central opening for mounting to the hub of a player, comprising: a base including a hub sized to fit closely into the central opening of a compact disc, and a center hole in said hub; and a stamping unit having a cap, a pilot spindle extending from an underside of said cap and sized to fit closely into said center hole, and a stamp element about said spindle on said underside; such that a compact disk can be mounted on the hub of the base and the stamping unit centered relative to the disc by insertion of the spindle into the center hole of the hub for making an identifying impression upon pressing said stamp element against a said disc; said pilot spindle having an extended length greater than the depth of said center hole, a spring biasing said spindle to an extended condition, said spindle being retractable into said cap against said spring.

Claim 3

The stamp of claim 1 further comprising an inkwell having a first side adapted to make a retentive fit with said cap for covering said stamp element, an inkpad in an opposite side of said inkwell, and a removable cover over said inkpad.

Claim 4

The stamp of claim 2 wherein said inkwell has a partition between said first and opposite sides, a center hub in said partition apertured for admitting said spindle, said inkpad perforated for mounting on said center hub.

Claim 5

The stamp of claim 1 wherein said cap has a concave underside, a stamp retainer closing said underside, said stamp element mounted to an underside of said retainer, said spindle extending through aligned holes defined in said retainer and said stamp element, said spring being compressed between said cap and said spindle, and a stop on said spindle acting against said retainer for limiting extension of said spindle.

Claim 6

The stamp of claim 1 wherein said base is planar and includes a spacer for supporting a said disc on said hub away from contact with said base.

Claim 7

The stamp of claim 5 wherein said base, said spacer and said hub are formed as an integrated unit.

Claim 8

The stamp of claim 6 wherein said center hole extends fully through said hub and said base.

Claim 9

An identification stamp for use on compact discs having a central opening for mounting to the hub of a player, comprising: a base including a hub on an upper side of said base, said hub sized to fit closely into the central opening of a compact disc, and a center hole in said hub; and a stamping unit having a cap with a concave underside, a stamp retainer closing said underside, a stamp element mounted to an underside of said retainer, a pilot spindle slidably extending through aligned holes defined in said retainer and said stamp element, said spindle sized to closely fit into said center hole; said base also having a spacer such that a compact disk can be supported on the hub of the base away from contact with said upper side and said stamping unit centered relative to the disc by insertion of the spindle into the center hole of the hub for making an identifying impression by pressing said stamp element against the disc.

Claim 10

An identification stamp for use on compact discs having a central opening for mounting to the hub of a player, comprising: a base including a hub on an upper side of said base, said hub sized to fit closely into the central opening of a compact disc, and a center hole in said hub; and a stamping unit having a cap with a concave underside, a stamp retainer closing said underside, a stamp element mounted to an underside of said retainer, a pilot spindle slidably extending through aligned holes defined in said retainer and said stamp element, said spindle sized to closely fit into said center hole; said base also having a spacer such that a compact disk can be supported on the hub of the base away from contact with said upper side and said stamping unit centered relative to the disc by insertion of the spindle into the center hole of the hub for making an identifying impression by pressing said stamp element against the disc.

Claim 11

The stamp of claim 8 wherein said base, said spacer and said hub are integrally molded of a plastic material.

Claim 12

The stamp of claim 8 wherein said center hole extends fully through said hub and said base, and said pilot spindle has an extended length beyond said stamp element greater than the depth of said center hole.

Claim 13

The stamp of claim 10 further comprising an inkwell having a first side adapted to retentively engage said cap for covering said stamp element, an inkpad on an opposite side of said inkwell, and a removable cover over said inkpad.

Claim 14

The stamp of claim 11 wherein said inkwell has a partition between said first and opposite sides, a spindle hole in said partition for admitting said spindle, an annular shoulder around said spindle hole on said opposite side of said partition, said inkpad being annular for mounting on said annular shoulder.

Claim 15

The stamp of claim 10 wherein said stamp element has raised indicia for making said impression on a said disc.

Claim 16

The stamp of claim 13 wherein said raised indicia extend annularly about said center spindle.

Claim 17

A kit for applying identifying markings to compact discs of the type having a central opening for mounting the disc to the hub of a player, said kit comprising: a base including a hub sized to fit closely into the central opening of a compact disc, and a center hole in said hub; and a stamping unit having a cap, a pilot spindle extending from an underside of said cap and sized to fit closely into said center hole, and a stamp element about said spindle on said underside; and an inkwell having a first side adapted to make a retentive fit with said cap for covering said stamp element, an inkpad in an opposite side of said inkwell, a partition between said first and opposite sides, a hole through said partition and said inkpad for receiving said spindle, and a removable cover over said inkpad.

Claim 18

A kit for applying identifying markings to compact discs of the type having a central opening for mounting the disc to the hub of a player, said kit comprising: a base including a hub sized to fit closely into the central opening of a compact disc, and a center hole in said hub; and a stamping unit having a cap, a pilot spindle extending from an underside of said cap and sized to fit closely into said center hole, and a stamp element about said spindle on said underside; and an inkwell having a first side adapted to make a retentive fit with said cap for covering said stamp element, an inkpad in an opposite side of said inkwell, a partition between said first and opposite sides, a hole through said partition and said inkpad for receiving said spindle, and a removable cover over said inkpad.