James L Hartman

US Patent:

8128541, Mar 6, 2012

Filed:

Feb 4, 2009

Appl. No.:

12/365633

Inventors:

James Hartman - Franklin OH, US

Assignee:

Grip4orce, LLC - Dayton OH

International Classification:

A63B 71/00
A63B 23/16
A63B 21/02

US Classification:

482139, 482 49, 482122

Abstract:

An exercise grip device includes a jaw member which is of a sufficient width to permit grasping thereabout with one's hand, wherein the jaw member includes a spring aspect which is preformed to an open position to permit receiving a weightlifting bar and is compressible to a closed position enabling engagement of the jaw member with the weightlifting bar in a manner to prevent sliding movement therebetween and while compressed exerts a force on one's hand and forearm muscles. A method includes weightlifting using the exercise grip device.

US Patent:

8128542, Mar 6, 2012

Filed:

Dec 1, 2010

Appl. No.:

12/957591

Inventors:

James Hartman - Franklin OH, US
Robert William Graham - Dayton OH, US

Assignee:

Grip4orce LLC - Dayton OH

International Classification:

A63B 71/00
A63B 23/16
A63B 21/02

US Classification:

482139, 482 49, 482122

Abstract:

An exercise grip device for use on a handle of a sport instrument which is to be swung and has a predetermined exterior size and configuration for a predetermined sport of the type swung to strike an object, wherein the handle has a predetermined cross-sectional configuration includes a generally tube-like member with a lengthwise opening and having about hand-width to permit grasping thereabout with one's hand and wherein the tube-like member includes a spring aspect which is preformed to an open relaxed position has an inner surface having a cross-sectional configuration which is larger than the predetermined cross-sectional configuration of the handle and is compressible to a closed position where the inner surface is maintained in contact with the handle to exert a force on one's hand and arm muscles and wherein the surface includes a nonmetal material which in the closed position engages the handle to prevent sliding movement therebetween by virtue of a non metal to handle contact of the grip device with the handle and while engaged by one's hand in a continuous compressed manner prevents sliding movement through the non metal to handle contact and concurrently works one's hand and arm muscles throughout a swing exercise employing the device on the instrument.

US Patent:

20090197742, Aug 6, 2009

Filed:

Feb 4, 2008

Appl. No.:

12/025163

Inventors:

James Hartman - Franklin OH, US

International Classification:

A63B 23/16

US Classification:

482 50, 482139, 482 92

Abstract:

An exercise grip device includes a jaw member which is of a sufficient width to permit grasping thereabout with one's hand, wherein the jaw member includes a spring aspect which is preformed to an open position to permit receiving a weightlifting bar and is compressible to a closed position enabling engagement of the jaw member with the weightlifting bar in a manner to prevent sliding movement therebetween and while compressed exerts a force on one's hand and forearm muscles. A method includes weightlifting using the exercise grip device.

US Patent:

20120208683, Aug 16, 2012

Filed:

Mar 5, 2012

Appl. No.:

13/412330

Inventors:

James Hartman - Franklin OH, US
Robert William Graham - Dayton OH, US

International Classification:

A63B 71/00

US Classification:

482139

Abstract:

An exercise grip device includes a jaw member which is of a sufficient width to permit grasping thereabout with one's hand, wherein the jaw member includes a spring aspect which is preformed to an open position to permit receiving a bar and is compressible to a closed position enabling engagement of the jaw member with the bar in a manner to prevent sliding movement therebetween and while compressed exerts a force on one's hand and forearm muscles.