# US 5,347,786 A · Reusable concrete spacer sleeve

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- Number: US 5,347,786 A
- Document ID: US5347786A
- Status: Granted
- Kind: A
- Application number: 07/969,717
- Filed: 1992-10-07
- Granted: 1994-09-20
- Earliest claimed: 1992-10-07
- Assignees: James Bruno
- Inventors: B. Eugene Hodges
- Web page: https://patentgrep.com/patent/US5347786A

## CPC

- E04G 15/063: {Re-usable forms}
- E04G: SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS

## Abstract

A reusable concrete spacer sleeve comprises a substantially cylindrical body having a plurality of inwardly extending fins. The sleeve is placed over a vertical drain pipe prior to pouring a concrete floor. After the concrete has set, the sleeve is removed, leaving an annular space around the pipe for accommodating a flange. A lid may be fitted onto the sleeve to prevent debris or other foreign matter from entering the pipe or the annular space around the pipe.

## Claims

### Claim 1

For use in conjunction with a vertical drain pipe, a reusable concrete spacer sleeve comprising:
a substantially cylindrical body having an interior surface and an upper rim, the cylindrical body being open at the top and bottom; and
substantially rectangular fins for positioning said cylindrical body about said pipe, said fins extending radially inwardly from the interior surface of the cylindrical body from one vertical edge of said fins, said fins having second vertical edges defining a substantially cylindrical space for accommodating the pipe in a snug fashion;
said substantially cylindrical body and fins being formed of a flexible thermoplastic material.

### Claim 2 (depends on 1)

The concrete spacer sleeve of claim 1 further comprising a removable lid formed of flexible thermoplastic material for matingly engaging said upper rim of said cylindrical body.

### Claim 3

For use in connection with a vertical drain pipe, a reusable concrete spacer sleeve comprising:
a substantially cylindrical body having an interior surface and an upper rim, the cylindrical body being open at the top and bottom;
a plurality of inwardly extending spacer elements evenly arranged about the interior surface of said body, each spacer element having a vertical edge and a top horizontal edge, said vertical edges defining a substantially cylindrical space for accommodating the pipe in a snug fashion; and
a lid having a lip for matingly engaging said upper rim of said cylindrical body, said cylindrical body extending a sufficient distance above said spacer elements to accommodate said lid.

### Claim 4

For use in connection with a vertical drain pipe, a reusable concrete spacer sleeve comprising:
a substantially cylindrical body having an interior surface and an upper rim, the cylindrical body being open at the top and bottom;
a plurality of inwardly extending spacer elements evenly arranged about the interior surface of said body, each spacer element having a vertical edge, a top horizontal edge and a notch located at the juncture of said vertical and horizontal edges, said vertical edges defining a substantially cylindrical space for accommodating the pipe in a snug fashion; and
a lid having a lip for matingly engaging said upper rim of said cylindrical body, said cylindrical body extending a sufficient distance above said spacer elements to accommodate said lid;
said substantially cylindrical lid being formed of a flexible thermoplastic material.

### Claim 5 (depends on 4)

The concrete spacer sleeve of claim 4 in which the spacer elements are fins.