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 Title: |
US5159639:
Assistive listening device
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Shannon, Clark W.; Tempe, AZ 85283
Krueger, Ellison F.; Mesa, AZ 85202
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| Assignee: |
None
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| Published / Filed: |
1992-10-27
/ 1991-02-19
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| Application Number: |
US1991000656758
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| IPC Code: |
Advanced:
G02C 11/06;
Core:
G02C 11/00;
IPC-7:
H04R 25/00;
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| U.S. Class: |
Current:
381/327;
381/312;
381/323;
Original:
381/068.5;
381/069;
381/069.2;
381/068;
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| Field of Search: |
381/68.5,68,68.1,68.6,68.7,69,69.2,25,183,187,169
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| Priority Number: |
| 1991-02-19 |
US1991000656758 |
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| Abstract: |
An assistive listening device detachably securable to a temple frame of eyeglasses. A carrier engages the frame and has one or more clips to which the instrument housing attaches. The housing contains a speaker, microphone and amplifier circuitry. The power supply comprises a battery pack accessible through a door in the housing. The device is turned "on" and "off" by a closing or opening of the door. A sound conducting tube carries sound from the speaker to the ear of the wearer.
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| Attorney, Agent or Firm: |
Nelson, Gregory J. ;
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| Primary / Asst. Examiners: |
Dwyer, James L.; Chan, Jason
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| Maintenance Status: |
E1 Expired Check current status
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| INPADOC Legal Status: |
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| Family: |
None
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First Claim:
Show all 15 claims |
I claim:
1. An assistive listening device for use with eyeglasses having a frame including a temple bow member said assistive listening device comprising:
- (a) a carrier detachably securable to the eyeglass frame and having retention means thereon;
- (b) an instrument having a housing with a forward end, said housing being detachably securable at said retention means, said instrument having sound amplifier means, a microphone, speaker and power supply means;
- (c) sound conducting means attachable to said instrument housing at a location to receive the output of said speaker and to transmit sound to the region of the ear of the user; and
- (d) wherein said housing includes a door pivotally attached thereto and wherein said power supply means includes a battery receptacle removably positioned within said housing having first electrical contact means associated therewith engageable by second electrical contact means to energize said amplifier means when said door is in a first position and to de-energize said amplifier means when said door is in a second position.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 33 U.S. patent(s) that reference this one
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