# US 11,306,493 B2 · Formwork brace and method of constructing a formwork brace

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- Number: US 11,306,493 B2
- Document ID: US11306493B2
- Status: Granted
- Kind: B2
- Application number: 17/418,568
- Filed: 2019-02-07
- Published: 2022-03-03
- Granted: 2022-04-19
- Earliest claimed: 2019-02-07
- Assignees: Fast-Form Systems Ltd
- Applicants: Fast-Form Systems Ltd
- Inventors: Tony White
- Web page: https://patentgrep.com/patent/US11306493B2

## CPC

- E04G 17/14: Bracing or strutting arrangements for formwalls; Devices for aligning forms (E04G25/00 takes precedence; {connecting and aligning E04G17/04})
- E04G 13/00: Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies {foundations, sills (E04G11/365 takes precedence; flat foundations, e.g. with lost forms E02D27/01; removable forms or shutterings for road-building purposes E01C19/50)}
- E04G 9/06: the form surface being of metal
- 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

Disclosed herein is a concrete formwork suitable for use in shuttering formwork. The formwork comprises a base and a plurality of clamping brackets. The clamping brackets further comprise clamping members that are engageable with the clamping brackets to define clamping portion that are aligned with openings on the base. The base is pivotally connected to a shuttering contact member which is supported by two braces. Also disclosed herein is a method of constructing the disclosed formwork.

## Claims

### Claim 1

A concrete formwork comprising:
a base having a first side configured for contact with the ground when in use;
at least two clamping brackets coupled to an adjacent second side of the base and extending over openings in the first side of the base;
a plurality of clamping members, each of the clamping brackets being engageable with a corresponding one of the clamping member to define a clamping portion superimposed over one of the openings,
each of the clamping portion being suitable for receiving a pin in use and for retaining the formwork in place with respect to the pin;
each of the clamping brackets comprising a cut-out in a top edge of the bracket to receive an extraction tool;
one end of the second side of the base being pivotally connected to one end of a shuttering contact member;
the shuttering contact member having a first side configured for contacting the shuttering board in use, and a second side adjacent the first side;
a first brace having a first brace first end thereof slidingly engaged with a first longitudinal slot in the second side of the shuttering contact member and an opposite first brace second end thereof being slidingly engaged with a base longitudinal slot spanning a distance between the two clamping brackets in the second side of the base;
a second brace having a second brace first end slidingly engaged with a second longitudinal slot in the second side of the shuttering contact member and an opposite second brace second end being slidingly engaged with the base longitudinal slot spanning the distance between the two clamping brackets in the second side of the base;
wherein the first longitudinal slot is proximal the pivotal connection between the base and the shuttering contact member and the second longitudinal slot is distal the connection between the base and the shuttering contact member; and
wherein adjustment of the braces within either or both of the slots causes rotation of the shuttering contact member about the base when in use, an angle of the shuttering contact member with respect to the base being fixable.

### Claim 2 (depends on 1)

The formwork according to claim 1, wherein the clamping brackets are substantially “V” shaped.

### Claim 3 (depends on 1)

The formwork according to claim 1, wherein the clamping brackets comprise flattened portions configured to lie flat against the second side of the base when in use.

### Claim 4 (depends on 2)

The formwork according to claim 2, wherein each of the clamping brackets comprises a first opening and a second opening, the first and second openings being opposite one another and on different sides of the ‘V’ shaped bracket, the first opening being wider than the second opening, both of the openings being configured to receive a wedge shaped clamping member through the first and second openings, wherein the clamping member substantially matches the dimensions of the first and second openings.

### Claim 5 (depends on 1)

The formwork according to claim 1, wherein each of the clamping members comprises a retainer configured to prevent clamping member from being lost when in use.

### Claim 6 (depends on 5)

The formwork according to claim 5, wherein the retainer comprises a weld applied to at least one side of the clamping member.

### Claim 7

A method of constructing a formwork, comprising:
coupling two clamping brackets to a second side of a base, the clamping brackets being arranged to extend over openings in a first side of the base that is adjacent the second side, and each of the clamping brackets comprising a cut-out in a top edge of the bracket to receive an extraction tool;
engaging a respective clamping member with each of the clamping brackets to define clamping portions in each bracket superimposed over the openings;
pivotally connecting a first end of the second side of the base to a first end of a shuttering contact member;
slidingly engaging a first end of a first brace with a first longitudinal slot in the shuttering contact member and slidingly engaging an opposite second end of the first brace with a longitudinal slot spanning a distance between the two clamping brackets in the second side of the base;
slidingly engaging a first end of a second brace with a second longitudinal slot in the shuttering contact member and slidingly engaging an opposite second end of the second brace with the longitudinal slot spanning the distance between the two clamping brackets in the second side of the base;
wherein the first longitudinal slot is proximal a connection between the base and the shuttering contact member and the second longitudinal slot is distal the connection between the base and the shuttering contact member;
adjusting the braces within either or both of the slots to cause rotation of the shuttering contact member about the base, and
fixing an angle of the shuttering contact member with respect to the base.

### Claim 8 (depends on 7)

The method according to claim 7, further comprising applying a retainer to the clamping members after they have been engaged with the clamping brackets.

### Claim 9 (depends on 8)

The method according to claim 8, wherein the retainer comprises a weld applied to at least one side of the clamping member.

### Claim 10 (depends on 7)

The method according to claim 7, wherein when in use a roadway pin is inserted through each of the clamping portions to fixedly mount the formwork to the ground.