Patent ID: 8926311
Filing Date: 2015-01-06
Classification: B28B

Abstract:
1. An adjustable mold for the manufacture of concrete products, said mold comprising: an outer jacket having corner panels joined to intermediate panels, the intermediate panels being separable from the corner panels; the corner panels and the intermediate panels of the jacket having inner walls that have substantially smooth surfaces; an inner core positioned inside and space from inner walls of the jacket to form an annular space into which concrete can be poured to form the concrete product; the inner core having corner panels joined by intermediate panels, the intermediate panels being separable from the corner panels; the corner panels and the intermediate panels of the inner core having rigidly attached outer walls that have substantially smooth surfaces; the smooth surfaces of the inner walls of the outer jacket and the smooth surfaces of the outer walls of the inner core forming the mold for the concrete product when the inner mold is positioned inside the jacket; a plurality of vibrators mounted on the jacket so as to vibrate the entire jacket when the corner panels and intermediate panels are secured together; and a pair of vertically spaced apart vibrators mounted on each of two opposite corner panels of the inner core, the vibrators being capable of vibrating the entire inner core.