Rubber stopper remover
AssigneeMidwest Research Institute
InventorRobert R. Stitt
Life of this patent
Estimating the term…
Abstract
A device for removing a rubber stopper from a test tube is mountable to an upright wall, has a generally horizontal splash guard, and a lower plate spaced parallel to and below the splash guard. A slot in the lower plate has spaced-apart opposing edges that converge towards each other from the plate outer edge to a narrowed portion, the opposing edges shaped to make engagement between the bottom of the stopper flange and the top edge of the test tube to wedge therebetween and to grasp the stopper in the slot narrowed portion to hold the stopper as the test tube is manipulated downwardly and pulled from the stopper. The opposing edges extend inwardly to adjoin an opening having a diameter significantly larger than that of the stopper flange.
Claims9
Device for removing a rubber stopper from its installed position in the end of a glass tube, said rubber stopper having a generally cylindrical stem and a flange top, said device including:
- a. a support web adapted to be fastened to a wall surface;
- b. a splash guard extending generally horizontally and outwardly from said support web;
- c. a lower plate extending outwardly from said support web and spaced a predetermined distance below said splash guard, and having an outer edge, said plate having an opening extending inward from said outer edge, said opening characterized by first and second spaced-apart tapered opposing edges that converge toward each other to a narrowed portion of narrowly spaced edges;
- d. an opening larger than said flange top, in said lower plate, inward of, and adjoining said narrowly spaced edges.
Dependencies are inferred from the claim text.