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Douglas D Grigg264 Hillside Ave, Chatham Township, NJ 07928

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Douglas Grigg Phones & Addresses

264 Hillside Ave, Chatham, NJ 07928 (973) 635-2667

14G Heritage Dr, Chatham, NJ 07928 (973) 635-2667

Education

Degree: Associate degree or higher

Mentions for Douglas D Grigg

Douglas Grigg resumes & CV records

Resumes

Douglas Grigg Photo 19

Sales Manager

Location:
Chatham, NJ
Industry:
Packaging And Containers
Work:

Sales Manager
Douglas Grigg Photo 20

Douglas Grigg

Work:
Maxim Douglas Jan 1985 - Apr 2011
Owner
Douglas Grigg Photo 21

Douglas Grigg

Douglas Grigg Photo 22

Douglas Grigg

Publications & IP owners

Us Patents

Fluid Fillable, Collapsible Dumbbells

US Patent:
4854575, Aug 8, 1989
Filed:
Jan 14, 1988
Appl. No.:
7/144280
Inventors:
Robert D. Wilson - Irvington-on-Hudson NY
Douglas W. Grigg - South Orange NJ
Donald G. Gialanella - New York NY
Assignee:
Wilson Water Weights, Inc. - Irvington-On-Hudson NY
International Classification:
A63B 1100
US Classification:
272122
Abstract:
A dumbbell is provided which is collapsible for storage and/or convenient transportability and can be expanded, when required for purposes of exercising, by introduction therein of fluid such as water and sand. The dumbbell comprises a hollow, collapsible container comprising a closed loop of hollow tube having an elliptical or doughnut shape, a hollow handle traversing the gap between the inner walls of the closed loop and a fluid inlet provided with a plug seal. The outer peripheral wall of the closed loop is provided with accordion pleats biased into the closed portion but expandable against the bias under the influence of pressure generated by introduction of fluid into the container. The amount of fluid so introduced is a matter of choice of the user to achieve the desired overall weight of the device. Advantageously the dumbbells are integrally molded from thermoplastic resin.

Possible Relatives

David P Grigg  Daniel K Grigg  Danny K Grigg  Dave G Grigg  Diane M Grigg  Edward J Grigg  Gail L Grigg  Douglas J Johnston  Douglas P Stanford  Douglas R Stangl 

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