Working well
OwnerJoseph J. Pelerininventor
Life of this patent
Estimating the term…
Abstract
A working well is provided for use during root canal therapy and comprises a base with a closed annular side wall and an elongated stem secured to and extending vertically upwardly from the base. A holder for a plurality of dental implements, such as broaches, is attached to the upper end of the side wall so that the implements depend downwardly from the holder. A slide assembly is vertically slidably mounted to the stem and has a stop member with an abutment surface secured to its lower end. The stop member limits the downward extension of the dental implements from the holder. A locking wheel selectively locks the slide assembly against further vertical movement along the stem.
Claims10
A working well for use during root canal therapy comprising:
- a base having a side wall,
- an elongated stem secured at one end to said base so that said stem extends generally vertically upwardly from said base,
- means for supporting at least one elongated dental implement adjacent the upper end of the side wall so that a portion of the implement depends downwardly from said support means,
- a slide assembly vertically slidably mounted to said stem and having an abutment surface formed at its lower end and beneath said support means,
- a plate having an upper surface and at least one aperture formed through it, said plate attached to the upper end of said stem,
- an annular member secured to the upper end of the slide assembly, said annular member having an upper planar surface positioned beneath said at least one plate aperture,
- wherein said slide assembly is longitudinally dimensioned so that the lineal distance between said support means and said abutment surface is substantially the same as the lineal distance between at least a portion of the upper surface of said plate and the upper planar surface of said annular member regardless of the position of the slide assembly with respect to the stem, and
- means for locking said slide assembly to said stem at an adjusted vertical position.
Dependencies are inferred from the claim text.