Large area slab panel formwork system

Patent metadata

Field	Value
Publication number	US-12065844-B2
Application number	US-201916699531-A
Country	US
Kind code	B2
Filing date	Nov 29, 2019
Priority date	Nov 29, 2018
Publication date	Aug 20, 2024
Grant date	Aug 20, 2024

Abstract

The various embodiments of the present invention provide a modular slab formwork with easy shuttering and de-shuttering assembly. The formwork comprises a formwork panel and a drophead. The formwork panel comprises a plurality of side connectors, a base frame, and a form-lining. The base frame comprises a corner element on each corner. The drophead is connected to each corner of the formwork panel through the corner element. The corner element forms a locking notch to lock at least two formwork panel with each other as well as with the drophead.

First claim

We claim:

1. A modular slab formwork with easy shuttering and de-shuttering assembly comprising:
a formwork panel, wherein the formwork panel comprises a base frame and a form-lining, wherein the base frame comprises a chamfered corner element on each corner;
a drophead comprising a top plate, a wedge, a stem, a bottom plate, and a locking bolt, wherein the drophead is connected to each corner of the formwork panel through the corner element; and
a prop, wherein the prop creates a vertical support to the formwork panel through the drophead over a ground surface and wherein a base plate of the prop is connected to the bottom plate through the locking bolt;
wherein, a fly plate pin of the drophead is configured to hook to a slotted window of each corner element during erection, wherein the slotted window and a bottom rim of the corner element facilitates alignment of the corner element with respect to the drophead.

2. The slab formwork as claimed in claim 1 , wherein the stem is fixed at a central axis of the bottom plate and further connected vertically to the wedge and the top plate respectively.

3. The slab formwork as claimed in claim 1 , wherein a corner of the base frame is chamfered at an angle range 40°-50° leading to a connection with a top plate of the drophead.

4. The slab formwork as claimed in claim 3 , wherein the wedge has dual action of successive detachment of the corner element of the formwork panel by releasing a hooked connection between the fly plate pin and the slotted window followed by gravity-based dropping of the fly plate.

5. The slab formwork as claimed in claim 1 , wherein a corner of the base frame is chamfered at 45°.

6. A modular slab formwork with easy shuttering and de-shuttering assembly comprising:
a formwork panel, wherein the formwork panel comprises a base frame and a form-lining, wherein the base frame comprises a chamfered corner element on each corner;
a drophead comprising a top plate, a wedge, a stem, a bottom plate, and a locking bolt, wherein the drophead is connected to each corner of the formwork panel through the corner element; and
a prop, wherein the prop creates a vertical support to the formwork panel through the drophead over a ground surface and wherein a base plate of the prop is connected to the bottom plate through the locking bolt;
wherein, a fly plate pin of the drophead is configured to hook to a slotted window of each corner element during erection, and wherein the slotted window, a bottom rim, and a chamfered portion of the corner element facilitates alignment of the corner element with respect to the drophead such that the formwork panel aligns with the top plate of the drophead.

7. A modular slab formwork with easy shuttering and de-shuttering assembly comprising:
at least one formwork panel, each comprising a base frame and a form-lining, wherein the base frame comprises a chamfered corner element on each corner;
a drophead comprising a top plate, a wedge, a stem, a bottom plate, and a locking bolt, wherein the drophead is connected to at least one corner of the at least one formwork panel through the corner element; and
a prop, wherein the prop creates a vertical support to the at least one formwork panel through the drophead over a ground surface and wherein a base plate of the prop is connected to the bottom plate through the locking bolt;
wherein, a fly plate pin of the drophead is configured to hook to a slotted window of each corner element during erection, wherein the slotted window and a bottom rim of the corner element facilitates alignment of the corner element with respect to the drophead and facilitates alignment of a first formwork panel of the at least one formwork panel with a second formwork panel of the at least one formwork panel.

Assignees

• Peri Se

Inventors

• Routh Anibrata
• Arun K S
• Rao C N V S
• Sharanappa A

Classifications

• E04G11/483

  Supporting heads (E04G11/486 takes precedence) · CPC title

• E04G9/02

  Forming boards or similar elements (E04G9/08, E04G9/10 take precedence) · CPC title

• E04G11/486 Primary

  Dropheads supporting the concrete after removal of the shuttering; Connecting means on beams specially adapted for dropheads · CPC title

• E04G11/38 Primary

  for plane ceilings of concrete · CPC title