# US 2019/0376281 A1 · Volumetric compression restrainer

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- Number: US 2019/0376281 A1
- Document ID: US20190376281A1
- Status: Published application
- Kind: A1
- Application number: 16/433,332
- Filed: 2019-06-06
- Published: 2019-12-12
- Earliest claimed: 2018-06-06
- Assignees: Universiti Putra Malaysia
- Applicants: Universiti Putra Malaysia
- Inventors: Farzad Hejazi; Mohd Saleh Jaafar
- Web page: https://patentgrep.com/patent/US20190376281A1

## CPC

- E04H 9/0215: {involving active or passive dynamic mass damping systems}
- E04H: BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL (foundations E02D)

## Abstract

The present invention relates to a volumetric compression restrainer (100), characterised by: an outer casing (101) comprising a pair of C-shaped structures interconnected to one another to form a cylinder; a plurality of partitions (102) arranged in a parallel manner along length of an inner surface of the pair of C-shaped structures with a spacing therebetween; an inner core (103) extending through the outer casing (101), whereby the plurality of partitions (102) enclosed the inner core (103); a plurality of hollow plates (104) mounted on the inner core (103), for spacing and upholding the inner core (103); a plurality of damping means (105) wrapped over the inner core (103), arranged in a manner of the plurality of damping means (105) positioned between the plurality of partitions (102) and the plurality of hollow plates (104); and a connecting means having a front connector (106) engaged to one end of the inner core (103) and an end connector (107) engaged to the other end of the inner core (103), for installing the volumetric compression restrainer (100) to a structure joint.

## Claims

### Claim 1

A volumetric compression restrainer (100), characterised by:
an outer casing (101) comprising a pair of C-shaped structures interconnected to one another to form a cylinder;
a plurality of partitions (102) arranged in a parallel manner along length of an inner surface of the pair of C-shaped structures with a spacing therebetween;
an inner core (103) extending through the outer casing (101), whereby the plurality of partitions (102) enclosed the inner core (103);
a plurality of hollow plates (104) mounted on the inner core (103), for spacing and upholding the inner core (103);
a plurality of damping means (105) wrapped over the inner core (103), arranged in a manner of the plurality of damping means (105) positioned between the plurality of partitions (102) and the plurality of hollow plates (104); and
a connecting means having a front connector (106) engaged to one end of the inner core (103) and an end connector (107) engaged to the other end of the inner core (103), for installing the volumetric compression restrainer (100) to a structure joint.

### Claim 2 (depends on 1)

The volumetric compression restrainer (100) according to claim 1, wherein the pair of C-structures connected to each other by bolts and nuts.

### Claim 3 (depends on 1)

The volumetric compression restrainer (100) according to claim 1, wherein the plurality of damping means (105) is a hyperelastic material.

### Claim 4 (depends on 3)

The volumetric compression restrainer (100) according to claim 3, wherein the hyperelastic material comprises rubber.