# US 2018/0020835 A1 · Hinged Motion Transducer

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- Number: US 2018/0020835 A1
- Document ID: US20180020835A1
- Status: Published application
- Kind: A1
- Application number: 15/701,437
- Filed: 2017-09-11
- Published: 2018-01-25
- Earliest claimed: 2013-03-15
- Inventors: Randolph J. Crowson, II
- Web page: https://patentgrep.com/patent/US20180020835A1

## CPC

- A47C 1/12: Theatre, auditorium or similar chairs (detachable seats for mounting on stadium benches A47C1/16)
- H02K 7/14: Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06)
- H02K 41/031: {of the permanent magnet type}
- H02K 41/0356: {moving along a straight path}
- A47C: CHAIRS; SOFAS; BEDS
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

A hinged electrodynamic transducer apparatus is disclosed for providing oscillating and/or vibrational motion. The hinged transducer of the present invention is configured to be robust and low profile for installation under chairs, seats, and other items of furniture such that it can impart vibrational motion capable of being sensed by the human body (DC to approximately 500Hz.

## Claims

### Claim 1

A device for imparting vibration motion to an object, the device comprising:
a top portion;
a bottom portion corresponding to the top portion;
a hinge element movably connecting said top portion and said bottom portion, the hinge element located at common ends of the top portion and bottom portion such that the top portion can open with respect to the bottom portion;
an electrodynamic actuator between the top portion and the bottom portion, the electrodynamic actuator being capable of effecting an open and close motion in the top portion with respect to the bottom portion when activated by electronic signals.