James A Wolfe

US Patent:

20080086241, Apr 10, 2008

Filed:

May 14, 2007

Appl. No.:

11/748363

Inventors:

Emilie Phillips - Brookline NH, US
Pavlo E. Rudakevych - Arroyo Grande CA, US
Orjeta Taka - Peabody MA, US
James Gordon Wolfe - Cambridge MA, US
Tom Frost - Cambridge MA, US

Assignee:

iRobot Corporation - Burlington MA

International Classification:

G05D 3/20
G06F 17/40
G06F 9/44

US Classification:

701 2, 701 24

Abstract:

A system and method for allowing an operator to switch between remote vehicle tele-operation and one or more remote vehicle autonomous behaviors, or for implementing remote vehicle autonomous behaviors. The system comprises an operator control system receiving input from the operator including instructions for the remote vehicle to execute an autonomous behavior, and a control system on the remote vehicle for receiving the instruction to execute an autonomous behavior from the operator control system. Upon receiving the instruction to execute an autonomous behavior, the remote vehicle executes that autonomous behavior.

US Patent:

40948579, Jun 13, 1978

Filed:

Sep 1, 1977

Appl. No.:

5/829822

Inventors:

James Richard Wolfe - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C08K 520
C07D30789
C07D30793
C07C10142

US Classification:

260 459QB

Abstract:

An antioxidant useful for stabilizing polyesters having the formula ##STR1## where R. sub. 1 is hydrogen or a lower alkyl radical; R. sub. 2 is a monovalent radical containing carbon, hydrogen, and oxygen, free of ethylenic or acetylenic unsaturation, and having a molecular weight between about 99-300 and, further, containing two carboxyl groups or their ester forming equivalents; R. sub. 3 and R. sub. 4 are tertiary alkyl radicals each containing not more than 8 carbon atoms; and x is an integer of from 0-4.

US Patent:

43716938, Feb 1, 1983

Filed:

Oct 2, 1981

Appl. No.:

6/308131

Inventors:

James R. Wolfe - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C08G 6908
C08G 6944

US Classification:

528292

Abstract:

Thermoplastic elastomeric polyetheresterimides comprising a multiplicity of long chain ester imide units represented by the formula ##STR1## and short chain esterimide units represented by the formula ##STR2## where G is a divalent radical remaining after the removal of terminal hydroxyl groups from a poly(alkylene oxide) glycol having a number average molecular weight of about 400-4000; D is a divalent radical remaining after removal of hydroxyl groups from a diol having a molecular weight less than about 300, and Q is a divalent radical remaining after removal of an amino group and a carboxyl group from a aliphatic primary amino acid having a molecular weight of less than 250; with the proviso that from about 2 to 10 of said short chain esterimide units are present for each of said long chain esterimide units.

US Patent:

46297618, Dec 16, 1986

Filed:

May 8, 1985

Appl. No.:

6/731792

Inventors:

James R. Wolfe - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C08L 6702
C08L 2334

US Classification:

525 92

Abstract:

A thermoplastic composition comprising about 10-80 parts by weight total polymers of a multi-block copolyester elastomer having a melting point of from about 100. degree. -200. degree. C. and about 20-90 parts by weight total polymers of a crosslinked chlorosulfonated polyethylene elastomer dispersed in said copolyester elastomer, said chlorosulfonated polyethylene elastomer being crosslinked to an extent such that not more than about 45% by weight of said elastomer is extractable with toluene at 25. degree. 0 C.

US Patent:

47105445, Dec 1, 1987

Filed:

Feb 20, 1987

Appl. No.:

7/017332

Inventors:

James R. Wolfe - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C08L 2326
C08L 2336
C08L 2304
C08L 2310

US Classification:

525194

Abstract:

A melt processible thermoplastic composition comprising a blend of: (A) 15-75 parts by weight of a crystalline polyolefin resin comprising polymerized monomer units of ethylene or propylene or mixtures thereof, and (B) 25-80 parts by weight of a crosslinked ethylene/alkyl acrylate elastomer made from dynamically crosslinking an ethylene/alkyl acrylate/monoalkyl ester of 1,4-butenedioic acid copolymer containing about 60-90 weight percent ethylene and wherein the alkyl group of the alkyl acrylate contains 1-6 carbon atoms, the dynamically crosslinked elastomer being dispersed throughout the crystalline polyolefin resin.

US Patent:

47586281, Jul 19, 1988

Filed:

Jun 3, 1987

Appl. No.:

7/056898

Inventors:

James R. Wolfe - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C08L 1100
C08L 1102
C08L 2304
C08L 2318

US Classification:

525215

Abstract:

A composition comprising a blend of about 70-20 weight percent crystalline polyethylene resin and 30-80 weight percent emulsion-derived polychloroprene gel is disclosed. The blend is prepared by blending the two materials at a temperature near to or above the melting point of the polyethylene.

US Patent:

48431249, Jun 27, 1989

Filed:

Jun 3, 1987

Appl. No.:

6/056987

Inventors:

James R. Wolfe - Wilmington DE

Assignee:

E. I. Du Pont de Neumours and Company - Wilmington DE

International Classification:

C08L 1100
C08L 6500

US Classification:

525 92

Abstract:

A thermoplastic elastomer blend of 15-90 parts of a continuous matrix of a thermoplastic elastomeric copolyester having a melting point of 100. degree. -200. degree. C. and 10-85 parts of crosslinked polychloroprene present in the form of finely divided particles.

US Patent:

48016470, Jan 31, 1989

Filed:

Mar 10, 1988

Appl. No.:

7/166486

Inventors:

James R. Wolfe - Wilmington DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

C08L 5104
C08L 5106
C08L 2326
C08L 2316

US Classification:

525 74

Abstract:

A thermoplastic elastomeric composition comprising a dynamically crosslinked grafted polyolefin copolymer elastomer and a thermoplastic crystalline polyolefin is disclosed. The crosslinked elastomer is dispersed in the thermoplastic crystalline polyolefin which is present as the continuous phase. The grafted elastomer is ethylene/propylene/diene terpolymer or ethylene/propylene copolymer grafted with fumaric acid, maleic acid, maleic anhydride or derivatives thereof capable of reacting with diamine crosslinking agents.