| 摘要 |
<p>The combination has a cup including a cylindrical wall with a lower edge. There is a flange projecting radially from the cylindrical wall and a ridge projecting downwardly from the flange. Two jambs each include a groove defined in a first side edge and a ridge formed on a second side edge. The jambs are attached to the cylindrical wall of the cup. A number of slides each include a first groove defined in an upper edge, a first ridge formed on a lower edge, a second groove defined in a first side edge and a second ridge formed on a second edge. A ring includes a groove defined in an upper surface. The ring is attached to the cup. The first ridge formed on a slide is slidably engageable in the first groove defined in another slide. The second ridge formed on a slide is slidably engageable in the second groove defined in another slide. The ridge formed on the flange formed on the cylindrical wall of the cup is slidably engageable in the first grooves defined in the slides. The second ridges formed on the slides are slidably engageable in the grooves defined in the jambs. The ridge formed on the jambs are slidably engageable in the second grooves defined in the slides. The first ridges formed on the slides are slidably engageable in the groove defined in the ring.</p> |
