Shower pan apparatus

Inventors: John Cristofoli (Anchorage, KY); Louis Cristofoli (Louisville, KY); Maria Shore (Louisville, KY); Anna Tatman (Louisville, KY)

Assignee: Venosa, LLC

A47K3/405 E04C2/04 E04C2/10

View Patent ↗

Loading inventors, assignments & file history…

Monitor This Case

Get email alerts when status or documents change.

Order Certified Copies

Most orders are placed with the USPTO same day — all within 24 business hours.

Order via The Patent Place →

Pre-filled with this patent's details

Quick Facts

Patent No.: US 12690724
App. No.: 18/156,677
Granted: Jul 28, 2026
Kind: B2

External Links

USPTO Patent Center↗ Full Patent PDF↗

Abstract

Described is a system and apparatus for a precast terrazzo shower including a floor portion, an interior curb, and a wedge portion. Each component may be precast in a size suitable for a standard shower installation.

Claims (23)

1 . A shower pan apparatus for covering a shower having a floor and a drain, said apparatus comprising:

a planar floor pan having a length and width sized to cover a predetermined shower floor area;

a curb having an interior angle therein and a length to match that of said floor pan; and

a wedge piece having a length to match that of said floor pan; and

wherein said floor pan, said curb, and said wedge piece are a single piece formed of terrazzo comprising;

eighty percent by volume of natural stone aggregate having a plurality of sizes;

a predetermined volume of ATF 20 filler; and

a predetermined volume of epoxy resin and epoxy resin hardener, wherein said predetermined volume of ATF 20 filler and said predetermined volume of epoxy resin and hardener are twenty percent by volume of said terrazzo.

2 . The apparatus as claimed in claim 1 wherein said terrazzo comprises:

size 0, size 1, and size 2 marble aggregate, wherein said size 0 and size 1 white marble aggregate is 80% by volume of the total aggregate and said size 2 white marble is 20% by volume of the total aggregate;

a predetermined volume of ATF 20 filler; and

3 . The apparatus as claimed in claim 1 comprising:

a foam substrate curb having a length to match said curb and at least one edge shaped to be engaged by said interior angle of said curb.

4 . The apparatus as claimed in claim 1 wherein said natural stone aggregate comprises white marble.

5 . An apparatus as claimed in claim 1 comprising:

a predetermined quantity of polymer fortified mortar for securing said floor pan, said wedge piece, and said curb.

6 . A shower pan apparatus for forming a shower floor having a floor area, a substrate curb having an interior vertical wall, and a drain comprising:

a generally planar single piece terrazzo floor pan having a length and width sized to cover a predetermined shower floor area;

at least one single piece terrazzo curb having a length substantially identical to that of said floor pan, said terrazzo curb having two sides that terminate in an interior angle;

a terrazzo wedge piece sized to cover said vertical wall of said curb; and

wherein said floor pan, said terrazzo curb, and said wedge piece are assembled to form said shower pan; and

wherein said floor pan, said wedge piece and said curb comprise a predetermined volume of marble having eighty percent by volume size 0 and size 1 marble and twenty percent by volume size 2 marble, a predetermined volume of ATF 20 filler, and a predetermined volume of epoxy resin and epoxy resin hardener.