David V Trumbauer

age ~84

from Homosassa, FL

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David Trumbauer Phones & Addresses

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Company / Classification

Phones & Addresses

David B. Trumbauer
Director

Dolls by Diane Hospital, Inc

182 Pne St, Homosassa, FL 34446

David Trumbauer
Director, Secretary

Citrus Sertoma Club, Inc
Membership Sport/Recreation Club

PO Box 1718, Crystal River, FL 34423
109 NE Crystal St, Crystal River, FL 34428

Casting Methods With Composite Molded Core Assembly
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US Patent:

44624530, Jul 31, 1984
Filed:

Jun 4, 1979
Appl. No.:

6/045000
Inventors:

David V. Trumbauer - Denver IA
Assignee:

Deere & Company - Moline IL
International Classification:

B22C 904
US Classification:

164 32
Abstract:

A core assembly for use in the casting of molten metal is formed by fabricating a first core, molding a plastic layer around the first core, and molding a second core around the plastic layer. The plastic layer is interlocked with an irregular outer surface of the first core, and the second core is interlocked with an irregular outer surface of the plastic layer. The plastic layer is then dissolved with a suitable solvent prior to placing the core assembly into a mold and molten iron being poured.

Casting Methods With Composite Molded Core Assembly
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US Patent:

RE314889, Jan 10, 1984
Filed:

Jun 2, 1980
Appl. No.:

6/155194
Inventors:

David V. Trumbauer - Bremer IA
Assignee:

Deere & Company - Moline IL
International Classification:

B22C 904
US Classification:

164 32
Abstract:

A core assembly is formed by fabricating a first core, molding a destructible plastic layer around the first core, and molding a second core around the plastic layer. The plastic layer is interlocked. [. wth. ]. . Iadd. with. Iaddend. an irregular outer surface of the first core, and the second core is interlocked with an irregular outer surface of the plastic layer. The core assembly can be used for casting engine cylinder heads to eliminate the need for gluing cores together and the accompanying formation of fins within fluid conducting passages.

Method For Forming Castings Having Inserts
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US Patent:

46917543, Sep 8, 1987
Filed:

Dec 31, 1985
Appl. No.:

6/814970
Inventors:

David V. Trumbauer - Denver IA
Larry L. Fosbinder - Moline IL
Terry L. Erion - Janesville IA
Assignee:

Deere & Company - Moline IL
International Classification:

B22C 702
B22C 910
B22D 1900
US Classification:

164 9
Abstract:

A core assembly is formed by molding a destructible plastic form around at least one insert and optionally around a non-destructible core. The core assembly can be used, for example, for casting engine cylinder heads having valve seat inserts integral therewith. The plastic form retains and supports the inserts until the precise time the plastic is replaced by the molten metal.

Crankshaft And A Process For Balancing The Same
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US Patent:

47793163, Oct 25, 1988
Filed:

May 6, 1987
Appl. No.:

7/047838
Inventors:

Jack D. Cherry - Grundy Center IA
David V. Trumbauer - Denver IA
Steven L. Hastings - Waterloo IA
Assignee:

Deere & Company - Moline IL
International Classification:

B21K 108
US Classification:

29 6
Abstract:

A crankshaft and counterweights are balanced by adding additional weight without modifying their outer dimensions. Bores are drilled into the counterweights and then a slug of material which is of a different density than the original counterweight material is inserted into the drilled bore. The slug may be held in place by any suitable mechanism, e. g. , press-fitting, upset fitting, welding or threading. Particularly with threading, a slug shorter than the bore may be positioned anywhere within the bore.

Casting Methods With Composite Molded Core Assembly
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US Patent:

40930181, Jun 6, 1978
Filed:

Oct 19, 1976
Appl. No.:

5/733958
Inventors:

David V. Trumbauer - Bremer IA
Assignee:

Deere & Company - Moline IL
International Classification:

B22C 904
B22C 924
B22C 910
US Classification:

164 32
Abstract:

A core assembly is formed by fabricating a first core, molding a destructible plastic layer around the first core, and molding a second core around the plastic layer. The plastic layer is interlocked wth an irregular outer surface of the first core, and the second core is interlocked with an irregular outer surface of the plastic layer. The core assembly can be used for casting engine cylinder heads to eliminate the need for gluing cores together and the accompanying formation of fins within fluid conducting passages.

Core Defining Apparatus And Method
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US Patent:

48441414, Jul 4, 1989
Filed:

Feb 9, 1987
Appl. No.:

7/012413
Inventors:

David V. Trumbauer - Denver IA
Alan E. Seeley - Waterloo IA
Assignee:

Deere & Company - Moline IL
International Classification:

B22C 910
B22C 1312
US Classification:

164 15
Abstract:

A core machine is arranged to automatically refine the shape of a sand core upon removal of the core from the machine. The core machine uses a core box to form a core. After formation of the core and separation of the core box halves a shaping member is moved into a space between the core box halves. As the core is ejected from the core box and removed from the machine it passes through the shaping member which refines the shape of the core. The machine may also be used for dimensional tolerancing about the parting line of the core box.

Method For Improving Stength Of Gasifiable Patterns
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US Patent:

47367865, Apr 12, 1988
Filed:

Dec 31, 1985
Appl. No.:

6/815167
Inventors:

David V. Trumbauer - Denver IA
Larry L. Fosbinder - Moline IL
Terry L. Erion - Janesville IA
Assignee:

Deere & Company - Moline IL
International Classification:

B22D 904
US Classification:

164 23
Abstract:

A core assembly is formed by molding a destructible plastic form in abutting relation to a rigid bonded core. The core assembly can be used for casting large or long and thin castings. The rigid bonded core reinforces the plastic form against flexural and torsional forces as well as forces within the plastic tending to change the dimensional configuration of the plastic form.