David M Carpenter

US Patent:

6529843, Mar 4, 2003

Filed:

Apr 12, 2001

Appl. No.:

09/835265

Inventors:

David J. Carpenter - Chicago IL 60656

International Classification:

G01R 2300

US Classification:

702 75, 84454, 84477, 84604

Abstract:

A system and methods for assisting a technician in tuning a musical instrument exhibiting inharmonicity, such as a piano. A display informs the technician of one or more beat rates associated with respective intervals of a note being tuned and other notes. A second display informs the technician of the phase difference between the note being adjusted and a reference signal. The note being tuned is detected automatically, thereby allowing the technician to work without constantly touching the system. The wavelengths emanating from the notes are determined accurately, and the corresponding frequencies are tested for their quality before being used in calculations used for providing the information for the displays. A tuning frequency is calculated for each note after measurement of a first note, and the calculation is updated as more measurements are taken. If desired, the technician may visit each note only once in the tuning of the musical instrument.

US Patent:

6613971, Sep 2, 2003

Filed:

Apr 12, 2001

Appl. No.:

09/835259

Inventors:

David J. Carpenter - Chicago IL 60656

International Classification:

G10G 702

US Classification:

84454, 702 75

Abstract:

A system and methods for assisting a technician in tuning a musical instrument exhibiting inharmonicity, such as a piano. A display informs the technician of one or more beat rates associated with respective intervals of a note being tuned and other notes. A second display informs the technician of the phase difference between the note being adjusted and a reference signal. The note being tuned is detected automatically, thereby allowing the technician to work without constantly touching the system. The wavelengths emanating from the notes are determined accurately, and the corresponding frequencies are tested for their quality before being used in calculations used for providing the information for the displays. A tuning frequency is calculated for each note after measurement of a first note, and the calculation is updated as more measurements are taken. If desired, the technician may visit each note only once in the tuning of the musical instrument.

US Patent:

6627806, Sep 30, 2003

Filed:

Apr 12, 2001

Appl. No.:

09/835267

Inventors:

David J. Carpenter - Chicago IL 60656

International Classification:

G10G 702

US Classification:

84454, 702 75

Abstract:

A system and methods for assisting a technician in tuning a musical instrument exhibiting inharmonicity, such as a piano. A display informs the technician of one or more beat rates associated with respective intervals of a note being tuned and other notes. A second display informs the technician of the phase difference between the note being adjusted and a reference signal. The note being tuned is detected automatically, thereby allowing the technician to work without constantly touching the system. The wavelengths emanating from the notes are determined accurately, and the corresponding frequencies are tested for their quality before being used in calculations used for providing the information for the displays. A tuning frequency is calculated for each note after measurement of a first note, and the calculation is updated as more measurements are taken. If desired, the technician may visit each note only once in the tuning of the musical instrument.

US Patent:

7268286, Sep 11, 2007

Filed:

Aug 4, 2003

Appl. No.:

10/634455

Inventors:

David J Carpenter - Chicago IL, US

International Classification:

G10G 7/02

US Classification:

84454, 702 75

Abstract:

Methods for assisting a technician in tuning a musical instrument exhibiting inharmonicity, such as a piano. If one aspect, a plurality of target frequencies are calculated using a table of preferred stretch values. In another aspect, target frequencies are calculated from multiple inharmonicity measurements during the time a tone generator is sounding.

US Patent:

43060293, Dec 15, 1981

Filed:

Apr 30, 1980

Appl. No.:

6/145170

Inventors:

David F. Carpenter - Buffalo Grove IL

Assignee:

Baxter Travenol Laboratories, Inc. - Deerfield IL

International Classification:

C07G 1500

US Classification:

435268

Abstract:

Growth and proliferation of bacteria may be inhibited in urine stored in a urine drainage container by placing urease in the container to generate sufficient ammonia to elevate the pH thereof to an alkaline level unfavorable for supporting microbial growth. Preferably, the urease is sealed in envelope means of semipermeable membrane which is capable of allowing diffusion of urea from urine stored in the container, while preventing substantial diffusion of the urease outwardly from the envelope means. Accordingly, the urease remains indefinitely reusable over many fillings and drainings of the container.

US Patent:

20190170259, Jun 6, 2019

Filed:

Feb 8, 2019

Appl. No.:

16/271690

Inventors:

- Franklin Park IL, US
John BECKMAN - Arlington Heights IL, US
David CARPENTER - Franklin Park IL, US

International Classification:

F16K 1/12
E03D 5/10
E03D 5/092
F16K 24/04
F16K 31/06

Abstract:

A flushometer system having an integrated control stop and three ports. The piston or flush control device is accessible through an actuation opening. The flushometer system may be utilized in a behind-the-wall installation with a face plate exterior for user interaction. The interior of the flushometer may be accessed through the actuation opening behind the face plate.

US Patent:

20180306328, Oct 25, 2018

Filed:

Apr 20, 2017

Appl. No.:

15/492985

Inventors:

- Franklin Park IL, US
John BECKMAN - Arlington Heights IL, US
David CARPENTER - Franklin Park IL, US

International Classification:

F16K 1/12
E03D 5/092
F16K 31/06
E03D 5/10
F16K 24/04

Abstract:

A flushometer system having an integrated control stop and three ports. The piston or flush control device is accessible through an actuation opening. The flushometer system may be utilized in a behind-the-wall installation with a face plate exterior for user interaction. The interior of the flushometer may be accessed through the actuation opening behind the face plate.