Sink drain fitting cutter guide
OwnerKenneth Heatoninventor
Life of this patent
Estimating the term…
Abstract
An interlocked assembly of a circular collar receivable in suspension within a sink drain fitting and an annular support slidably engaged to the collar cooperate to form a guide aligning the blade of a rotary cutting tool adjacent the seat of a retaining ring that holds the fitting in place. The sliding translation of the annular support within the collar is limited by a radially projecting ring to limit the penetration depth of the rotary saw blade mounted in the guided tool thus limiting the incidence of damage to the surrounding sink structure.
Claims19
A cutting guide useful in positioning and guiding the rotary blade operatively engaged in the chuck of a rotary cutting tool in an alignment proximate the ring retaining groove of a sink drain fitting comprising, in combination:
- a circular collar conformed for a mating fit within the interior of said fitting including a plurality of radial projections extending from the upper periphery thereof for the support of said collar in partial receipt within said fitting, said collar including a central opening therein;
- a tubular segment defined by an upper peripheral ring on the upper portion of the exterior thereof of a dimension greater than central opening within said collar and a lower peripheral ring on the lower peripheral portion thereof of a dimension smaller than said central opening in said collar, said upper and lower rings being axially separated from each other by a gap equal or just greater than the axial dimension of said collar;
- and
- an annular cavity formed in said tubular segment conformed to receive in coaxial alignment said cutting tool and said chuck.
A cutting guide according to claim 3, wherein:
- said rotary blade is of a circular planform having a radial dimension greater than the radial dimension of said lower ring and lesser than the radial dimension of said central opening.
A cutting guide useful in positioning and guiding a circular blade operatively engaged in an axially aligned chuck at the end of a rotary cutting tool into an alignment proximate the ring retaining groove of a sink drain fitting comprising, in combination:
- a circular collar defined by an upper and a substantially parallel lower surface and conformed for a mating fit within the interior of said fitting including a plurality of radial projections extending from the periphery thereof proximate said upper surface for supporting said collar in partial receipt within said fitting, said collar including a generally coaxial central circular opening therein;
- a tubular segment defined by an upper peripheral ring on the upper portion of the exterior thereof of a dimension greater than central opening within said collar and a lower peripheral ring on the lower peripheral portion thereof of a dimension smaller than said central opening in said collar, said upper and lower rings being axially separated from each other by a gap equal or just greater than the axial dimension of said collar between said upper and lower surfaces thereof;
- and
- an annular cavity formed in said tubular segment conformed to receive in coaxial alignment a portion of said cutting tool including said chuck.
A cutting guide according to claim 18, wherein:
- said polymeric material structure includes acrynolite butadiene styrene.
Dependencies are inferred from the claim text.