초록 ▼

A cover apparatus for temporarily covering access openings for water, drain, manhole and overflow pipes during construction, when the access openings are exposed, to prevent dirt, dust or unauthorized access to the access openings. The cover apparatus includes a top portion which extends beyond the

A cover apparatus for temporarily covering access openings for water, drain, manhole and overflow pipes during construction, when the access openings are exposed, to prevent dirt, dust or unauthorized access to the access openings. The cover apparatus includes a top portion which extends beyond the access opening, a depending side wall which fits within the access opening, a outwardly flared lower side wall which extends below the depending side wall, a central ring depending from the top portion in spaced relation from the depending side wall, and a plurality of ribs extending between the central ring and the depending side wall. A pump means is secured within the central ring, and an expandable bladder in fluid communication with the pump means is positioned on the depending side wall, between the top portion and the outwardly flared side wall. When inflated, the expandable bladder seals the cover apparatus to the access opening. An annular ring may be used to position the expandable bladder on the depending side wall between the annular ring and the outwardly flared side wall.

대표청구항 ▼

A cover apparatus for temporarily covering access openings for water, drain, manhole and overflow pipes during construction, when the access openings are exposed, to prevent dirt, dust or unauthorized access to the access openings. The cover apparatus includes a top portion which extends beyond the

A cover apparatus for temporarily covering access openings for water, drain, manhole and overflow pipes during construction, when the access openings are exposed, to prevent dirt, dust or unauthorized access to the access openings. The cover apparatus includes a top portion which extends beyond the access opening, a depending side wall which fits within the access opening, a outwardly flared lower side wall which extends below the depending side wall, a central ring depending from the top portion in spaced relation from the depending side wall, and a plurality of ribs extending between the central ring and the depending side wall. A pump means is secured within the central ring, and an expandable bladder in fluid communication with the pump means is positioned on the depending side wall, between the top portion and the outwardly flared side wall. When inflated, the expandable bladder seals the cover apparatus to the access opening. An annular ring may be used to position the expandable bladder on the depending side wall between the annular ring and the outwardly flared side wall. rt for supporting the take-up ribbon core, the cassette assembly being removable from the apparatus; a thermal print head positionable in engagement with the thermal ribbon for transferring dye from the thermal ribbon to a receiver sheet; a loading aid means coupled to the printer apparatus for supporting the cassette assembly after the cassette assembly is removed from the apparatus, the loading aid means supporting the cassette assembly so that the cassette assembly extends outwardly of the printer apparatus to facilitate loading of the supply ribbon core and take-up ribbon core in the cassette assembly. 6. A method of loading a thermal ribbon having dye into a cassette assembly of a thermal printer apparatus, the method comprising: providing a cassette assembly for storing a thermal ribbon having dye, the thermal ribbon including a supply ribbon core having a supply of the thermal ribbon wound thereon as a roll and a take-up ribbon core, the cassette assembly including a supply ribbon support for supporting the supply ribbon core and a take-up ribbon support for supporting the take-up ribbon core, the cassette assembly being removable from the apparatus; removing the cassette assembly from the apparatus; mounting the cassette assembly after the cassette assembly is removed from the apparatus upon a loading aid, the loading aid supporting the cassette assembly so that the cassette assembly extends outwardly of the printer apparatus to facilitate loading of the supply ribbon core and take-up ribbon core in the cassette assembly; and positioning the supply ribbon core and take-up ribbon core respectively upon the supply ribbon support and the take-up ribbon support of the cassette assembly. 7. The method of claim 6 and including wrapping the ribbon about right and left side walls of the cassette assembly so that a portion of the ribbon is in position to be engaged by a thermal print head during operation of printing by the thermal printer apparatus. 8. The method of claim 7 and wherein the loading aid includes first and second slots and the supply ribbon support is mounted in the first slot and take-up ribbon support is mounted in the second slot. 9. The method of claim 8 and wherein the thermal ribbon includes a leader portion that extends from an outer convolution of the roll of thermal ribbon with a leading end portion of the leader portion being attached to the take-up ribbon core and a double sided tape being attached to the leader portion so as to adhesively couple the leader portion to the outer convolution of the roll and wherein the adhesive coupling is sufficiently strong so as to prevent unraveling of the thermal ribbon from the roll on the supply core when the take-up core is supported by an operator and the supply core with the roll of ribbon thereon is allowed to dangle freely. 10. The method of claim 9 and wherein the double sided tape is located relative to the leader portion at a location from the leading end of the leader portion so that when the supply core and take-up core are mounted on the cassette assembly with the thermal ribbon wound about the cassette assembly and the cassette assembly is supported in the printer apparatus the double sided tape is positioned downstream of a print nip where the printer would engage the thermal ribbon so that the double sided tape does not engage receiver media during printing. 11. The method of claim 7 and wherein the thermal ribbon includes a leader portion that extends from an outer convolution of the roll of thermal ribbon with a leading end portion of the leader portion being attached to the take-up ribbon core and a double sided tape being attached to the leader portion so as to adhesively couple the leader portion to the outer convolution of the roll and wherein the adhesive coupling is sufficiently strong so as to prevent unraveling of the thermal ribbon from the roll on the supply core when the take-up core is supported by an operator and the supply core with the roll of ribbon thereon is allowed to dangle freely. 12. The method of claim 11 and wherein the double sided tape is located relative to the leader portion at a location from a leading end of the leader portion so that when the supply core and take-up core are mounted on the cassette assembly with the thermal ribbon wound about the cassette assembly and the cassette assembly is supported in the printer apparatus the double sided tape is positioned downstream of a print nip where the printer would engage the thermal ribbon so that the double sided tape does not engage receiver media during printing. 13. The method of claim 6 and wherein the thermal ribbon includes a leader portion,formed of the thermal ribbon, that extends from an outer convolution of the roll of thermal ribbon with a leading end portion of the leader portion being attached to the take-up ribbon core and a double sided tape being attached to the leader portion so as to adhesively couple the leader portion to the outer convolution of the roll and wherein the adhesive coupling is sufficiently strong so as to prevent unraveling of the thermal ribbon from the roll on the supply core when the take-up core is supported by an operator and the supply core, with the complete roll of ribbon thereon except for the leader portion, is allowed to dangle freely. 14. The method of claim 13 and wherein the double sided tape is located relative to the leader portion at a location from a leading end of the leader portion so that when the supply core and take-up core are mounted on the cassette assembly with the thermal ribbon wound about the cassette assembly and the cassette assembly is supported in the printer apparatus the double sided tape is positioned downstream of a print nip where the printer would engage the thermal ribbon so that the double sided tape does not engage receiver media during printing. 15. For use in the method of claim 6 a thermal ribbon supply and take-up for loading into a cassette assembly of a thermal printer apparatus, the ribbon supply and take-up comprising: a supply core having a supply of thermal ribbon wound thereon as a roll and a take-up core,wherein the thermal ribbon includes a leader portion,formed of the thermal ribbon, that extends from an outer convolution of the roll of thermal ribbon with a leading end portion of the leader portion being attached to the take-up ribbon core and a double sided tape being attached to the leader portion so as to adhesively couple the leader portion to the outer convolution of the roll and wherein the adhesive coupling is sufficiently strong so as to prevent unraveling of the thermal ribbon from the roll on the supply core when the take-up core is supported by an operator and the supply core, with the complete roll of ribbon thereon except for the leader portion, is allowed to dangle freely. 16. The ribbon supply and take-up of claim 15 and further comprising: wherein the double sided tape is located relative to the leader portion at a location from a leading end of the leader portion so that when the supply core and take-up core are mounted on the cassette assembly with the thermal ribbon wound about the cassette assembly and the cassette assembly is supported in the printer apparatus the double sided tape is positioned downstream of a print nip where the printer would engage the thermal ribbon so that the double sided tape does not engage receiver media during printing.