# US 5,704,159 A · Structural insert for providing root-space protection

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- Number: US 5,704,159 A
- Document ID: US5704159A
- Status: Granted
- Kind: A
- Application number: 08/464,903
- Filed: 1995-07-19
- Granted: 1998-01-06
- Earliest claimed: 1993-12-09
- Assignees: Hermann A. Dreyer
- Inventors: Hermann A. Dreyer; Peter Erlacher
- Web page: https://patentgrep.com/patent/US5704159A

## CPC

- E01C 9/005: {Coverings around trees forming part of the road (protecting plants in general A01G13/00)}
- E01C: CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR (forming roads or like surfaces by compacting or grading snow or ice E01H)

## Abstract

The root-space protection comprises a basic component (1) forming the root space and a cover (9) with a trunk aperture. In order to suit the root-space protection to the biological, technical and aesthetic requirements, the proposal is for a structural insert in which the basic component (1) is subdivided transversely to its vertical axis (2) into at least two parts (3, 4), where the upper part has a recess (5) for the cover.

## Claims

### Claim 1

A structural component set for defining a plant root space protector, comprising:
basic element means defining a three-dimensional root space and including an upper component and a lower component, said lower component comprising a plurality of substantially identical members, said upper component and said lower component including said substantially identical members being adapted to be placed in superposed relationship at selectable distances from each other along a substantially vertical axis, said upper component and said lower component including said substantially identical members comprising a plurality of connectable frame members and defining openings surrounding said substantially vertical axis, the opening of said upper component being adapted to receive cover means defining a frame for a plant trunk; and
a plurality of individually adjustable spacer means, said spacer means being arranged between said upper component and said lower component and comprising threaded bolt means and nut means rotatably received thereon, for defining said selectable distances between said upper component and said lower component including said substantially identical members thereof.

### Claim 2 (depends on 1)

The structural component set according to claim 1, wherein said upper component and said lower component including said substantially identical members thereof are shaped like substantially rectangular frames.

### Claim 3 (depends on 2)

The structural component set according to claim 2, wherein said substantially identical members of said lower component are of substantially the same height.

### Claim 4 (depends on 3)

The structural component set according to claim 3, wherein said upper component and said cover means are made of different materials.

### Claim 5 (depends on 3)

The structural component set according to claim 3, wherein said upper component and said cover means are made of the same material.

### Claim 6 (depends on 5)

The structural component set according to claim 5, wherein said upper component and said lower component are made of different materials.

### Claim 7 (depends on 5)

The structural component set according to claim 5, wherein said upper component is made of the same material as said lower component.

### Claim 8 (depends on 7)

The structural component set according to claim 7, wherein said basic element means comprises a plurality of substantially symmetrical segments separated relative to a plane of symmetry including said substantially vertical axis.