Load transmission device

• US 10,352,004 B2
• Filed: 05/26/2015
• Issued: 07/16/2019
• Est. Priority Date: 05/28/2014
• Status: Active Grant

• Current Assignee: Afonso Moreira Serro
• Original Assignee: Afonso Moreira Serro
• Inventors: Lourenco Serro, Manuel Filipe
• Primary Examiner(s): Will, Thomas B
• Assistant Examiner(s): Chu, Katherine J
• Application Number:
  US15/314,108
• Publication Number:
  US 20170198443A1
• Time in Patent Office: 1,512 Days
• Field of Search: 404 47, 404 51, 404 52, 404 58, 404 60, 52414, 52415, 526495
• CPC Class Codes: E01C 11/14 Dowel assembly ; Design or construction of reinforcements in the area of joints coupling devices for prefabricated units E01C5/005; combined with characteristic packings E01C11/08 - E01C11/12; removable holders E01C23/045
• CPC Class Codes: E01C 2201/12 vertically interlocking
• CPC Class Codes: E01C 5/005 Individual couplings or spacer elements for joining the prefabricated units E01C5/10 takes precedence
• CPC Class Codes: E01C 5/06 made of units with cement or like binders
• CPC Class Codes: E04B 5/023 Separate connecting devices for prefabricated floor-slabs
• CPC Class Codes: E04C 5/00 Reinforcing elements, e.g. for concrete; Auxiliary elements therefor methods or devices for making reinforcing materials B21D; material composition C04B, C21, C22
• CPC Class Codes: E04C 5/18 Spacers of metal or substantially of metal E04C5/168 takes precedence
• CPC Class Codes: E04C 5/205 Ladder or strip spacers

Abstract

A telescopic bar for load transmission which, if anchored in concrete slabs, creates a support between them, forming semi-rigid joints, and prevents differential settlement of the slabs, by enabling rotation in the vertical direction about a joint axis. The telescopic bar transmits a load from one slab to an adjacent slab, ensures perfect leveling of the slab surfaces, and enables removal and reuse of the slab at a later time. The telescopic bar may be used for constructing floors of easily manufactured prefabricated materials, and creates a new paradigm for the construction of roads, seaports, airports, railways, industrial areas, etc.

Claims

1. A telescopic bar (1) anchored in slabs, that creates a support between said slabs and forms semi-rigid joints, said telescopic bar (1) comprising

a sheath (2),

an anchoring arc (3) fixed to said sheath (2),

a rack (4) fixed to a surface of said telescopic bar (1),

a rotational key (9) inserted into an access chamber (6),

alignment and strengthening armatures (10), and

a transmission system from rotary motion into rectilinear motion, which moves said rack (4) and which is actionable from a slab surface by turning said rotational key (9), said transmission system further comprising a pinion (5) and an adjusting nut (7);

wherein said telescopic bar (1) transmits a load between said slabs and prevents differential settlement of said slabs.

2. The telescopic bar (1) according to claim 1, wherein said access chamber (6) is filled with a flexible material and is sealed at said slab surface.

3. The telescopic bar (1) according to claim 1 wherein said slabs are prefabricated concrete slabs.