Patent ID: 7596933
Filing Date: 2009-10-06
Classification: B65B

Abstract:
1. A dual actuator cylinder assembly, comprising: a cylinder body defining first and second axially aligned and separated internal cavities, wherein the first and second internal cavities extend along aligned longitudinal axes; a first piston movably mounted in the first internal cavity for movement along the longitudinal axis of the first internal cavity; a second piston movably mounted in the second internal cavity for movement along the longitudinal axis of the second internal cavity; a first actuator rod arrangement having an inner end interconnected with the first piston and an outer end located exteriorly of the cylinder body; a second actuator rod arrangement having an inner end interconnected with the second piston and an outer end located exteriorly of the cylinder body; wherein movement of the first piston within the first internal cavity and movement of the second piston within the second internal cavity causes movement of the first and second actuator rod arrangements, respectively, in an axial direction along the longitudinal axes of the first and second internal cavities, and wherein the cylinder assembly is incorporated in a packaging arrangement that includes a seal member and a knife member, wherein the outer end of the first actuator rod arrangement is interconnected with the seal member for moving the seal member between an operative sealing position and a retracted position, and wherein the outer end of the second actuator rod arrangement is interconnected with the knife member for moving the knife member between an operative cutting position and a retracted position independently of movement of the sealing member.