US Patent 9555309 Adjustable jerk block

Disclosed is a portable lifting jerk block for use in holding barbells used in weightlifting. The jerk block allows an individual to position a barbell at most any height by use of hydraulic lift member providing safety and convenience to the operator. A laser leveling light coordinates two adjoining jerk blocks providing a visual signal by highlight indicia on the adjoining lifting jerk block, or producing an audible tone when a laser light on an adjoining jerk block illuminates a photo cell detector to assure a level support for the barbell when positioned between the lifting jerk blocks.