Fluid pressure actuated clamp

Claim 1

A FLUID PRESSURE ACTUATED CLAMP COMPRISING A CLAMPING LEVER CONSISTING OF A TOP PLATE PROVIDED WITH A SLOT, A STEP HAVING A WORK ENGAGING SURFACE FORMED IN THE REAR SECTION OF SAID TOP PLATE, AN ELEVATED HORIZONTALLY PROJECTING MEMBER, PROVIDED WITH AN ORIFICE, FORMED IN THE FRONT SECTION OF SAID TOP PLATE, A VERTICAL WALL DEPENDING FROM SAID HORIZONTALLY PROJECTING MEMBER, A HORIZONTAL RIDGE FORMED IN SAID VERTICAL WALL, A BOLT LOCATED IN SAID SLOT, MEANS TO YIELDINGLY PIVOT SAID CLAMPING LEVER TO SAID BOLT, A HYDRAULIC CYLINDER CONSISTING OF A PISTON CHAMBER HAVING A CYLINDRICAL SIDE WALL, A BASE AND AN OUTWARDLY EXTENDING LIP, A PISTON ENGAGING SURFACE FORMED INTERNALLY OF SAID CYLINDRICAL SIDE WALL, A FLUID ENGAGING WORK AREA FORMED INTERNALLY OF SAID BASE, SAID PISTON CHAMBER LOCATED ADJACENT SAID HORIZONTAL RIDGE, A COIL SPRING INTERPOSED BETWEEN SAID HORIZONTAL RIDGE AND SAID OUTWARDLY EXTENDING LIP, A PISTON PROVIDED WITH A SLIDING SURFACE, A NECK PORTION AND AN AXIAL PASSAGEWAY, SAID SLIDING SURFACE SLIDINGLY ENGAGING SAID PISTON ENGAGING SURFACE, SAID NECK PORTION LOCATED IN SAID ORIFICE, MEANS TO SECURE SAID NECK TO SAID HORIZONTALLY PROJECTING MEMBER, WHEREBY FLUID PRESSURE PASSING THROUGH SAID AXIAL PASSAGEWAY AND ACTING ON SAID FLUID ENGAGING WORK AREA CAUSES RELATIVE MOVEMENT BETWEEN SAID PISTON AND SAID PISTON CHAMBER AGAINST THE TENSION OF SAID COIL SPRING, TO ACTUATE THE MEANS TO YIELDINGLY PIVOT SAID CLAMPING LEVER TO SAID BOLT WHEREBY SAID WORK ENGAGING SURFACE MOVES IN A WORK PRODUCING STROKE.