David L Shepard

US Patent:

40999432, Jul 11, 1978

Filed:

Oct 18, 1976

Appl. No.:

5/733290

Inventors:

Kurt Fischman - New Milford NJ
Robert Offer - Racine WI
Bernard Rudner - Ridgewood NJ
David Shepard - Racine WI

Assignee:

Tenneco Chemicals, Inc. - Saddle Brook NJ

International Classification:

B01D 3916

US Classification:

55487

Abstract:

A layer of open cell polyurethane foam adhered to a layer of a non-woven fibrous material of fine porosity relative to the foam results in an efficient fluid (e. g. , air) filtering medium having a high capacity for retaining particulate contaminants. The combined layers are useful as an air filter element.

US Patent:

40414540, Aug 9, 1977

Filed:

Jul 12, 1976

Appl. No.:

5/704575

Inventors:

David H. Shepard - Rye NY
Edward J. Gushue - Bedford Hills NY

Assignee:

Cognitronics Corporation - Stamford CT

International Classification:

G06K 912

US Classification:

3401463F

Abstract:

A central time-shared data processing system organized for character analysis and coupled to a number of remote document scanning stations each including a drum document feed, the drum being rotatable in small incremental steps, and means operable between steps for scanning the document along a path parallel to a line of characters on the document to produce data identifying graphic figures for analysis by the central processing system.

US Patent:

45729620, Feb 25, 1986

Filed:

Apr 28, 1982

Appl. No.:

6/372632

Inventors:

David H. Shepard - Rye NY

Assignee:

Cognitronics Corporation - Stamford CT

International Classification:

F03D 302

US Classification:

290 55

Abstract:

A wind-operated power-generating module for operation at high altitudes such as 1000 meters comprising a frame structure mounting a pair of vertically-separated parallel shafts around which pass endless belts supporting a series of parallel, elongate wing-like elements for movement around a closed path including the parallel shafts. Wind flow drives these elements around the closed path, to enable electrical power to be generated, and also provides lift to hold the module up at the appropriate high altitude. A number of such modules are tethered in fixed positions in the sky, and are controllable as is appropriate to accommodate changing wind conditions.

US Patent:

RE291048, Jan 4, 1977

Filed:

Nov 11, 1974

Appl. No.:

5/522686

Inventors:

David H. Shepard - Rye NY

Assignee:

Cognitronics Corporation - Stamford CT

International Classification:

G06K 714

US Classification:

3401463B

Abstract:

An optical character recognition system including a laser scanner unit adapted to scan a document having preprinted markings to indicate where the characters are to be placed. Variations in light intensity reflected from the document and characters produce scan signals which are processed to determine the characters. The color of the markings on the document is related to the laser frequency such that the light reflected from the markings has the same intensity as the light reflected from the document background, so that the presence of the markings does not interfere with the reading of the characters.

US Patent:

47825090, Nov 1, 1988

Filed:

Jul 6, 1987

Appl. No.:

7/069828

Inventors:

David H. Shepard - Rye NY

Assignee:

Cognitronics Corporation - Stamford CT

International Classification:

H04M 350
H04M 700
H04M 1100

US Classification:

379 88

Abstract:

A telephone system wherein any one of a large number of telephones is connectible to a local directory assistance request processor. The name of a subscriber whose telephone number is sought is entered through a connected telephone by spelling out the subscriber's name with the standard telephone push-buttons, using the grouped alphabetic designators on those buttons. The resulting decimal signals are stored in the request processor, and also are forwarded by a digital transmission system to the appropriate one of a number of directory processors each having a subscriber data base in alphanumeric code. A look-up is carried out to locate the alphanumeric code data identifying the subscriber's name corresponding to the originally-entered decimal request signals, and the located alphanumeric information including name and telephone number is sent back through the digital transmission system to the request processor. The alphanumeric code data is used at that processor to control a voice-response unit which directs to the originating telephone corresponding speech signals identifying the subscriber's name and telephone number.

US Patent:

50520385, Sep 24, 1991

Filed:

Apr 12, 1990

Appl. No.:

7/508961

Inventors:

David H. Shepard - Rye NY

Assignee:

Cognitronics Corporation - Stamford CT

International Classification:

H04M 350
H04M 700
H04M 1100

US Classification:

379 88

Abstract:

A telephone system wherein any one of a large number of telephones is connectible to a local directory-assistance request processor. The name of a subscriber whose telephone number is sought is entered through a connected telephone by spelling out the subscriber's name with the standard telephone push-buttons, using the grouped alphabetic designators on those buttons. The resulting decimal signals are stored in the request processor, and also are forwarded by a digital transmission system to the appropriate one of a number of directory processors each having a subscriber data base in alphanumeric code. A look-up is carried out to locate the alphanumeric code data identifying the subscriber's name corresponding to the originally-entered decimal request signals, and the located alphanumeric information including name and telephone number is sent back through the digital transmission system to the request processor. The alphanumeric code data is used at that processor to control a voice-response unit which directs to the originating telephone corresponding speech signals identifying the subscriber's name and telephone number.

US Patent:

40217779, May 3, 1977

Filed:

Jul 23, 1976

Appl. No.:

5/708068

Inventors:

David H. Shepard - Rye NY

Assignee:

Cognitronics Corporation - Stamford CT

International Classification:

G06K 900

US Classification:

3401463AH

Abstract:

A remote optical character recognition system including a central processor time-shared among a number of remote scanner units each adapted to receive a document bearing information characters to be scanned so as to produce corresponding signals which are transmitted to the central processor for analysis, whereby signals are developed identifying each of the information characters on the document. The document is additionally provided with control characters presented with a distinctive characteristic to enable the central processor to distinguish the control characters from the information characters. The central processor identifies the control characters and produces corresponding control effects related to procedures for scanning the document and processing the scan data. Certain of the control characters provide basic information concerning the particular customer whose document is being scanned, as well as initial instructions such as specifying portions of the document to be scanned. Other control characters relate specifically to corresponding information characters placed in directly associated data fields on the document.