Abstract: High frequency shock absorber/accelerator built in at any or both end of conventional air cylinder that includes piston moving axially inside cylinder body and sealed against inner surface of body by sealing structure. Cylinder piston rod protrudes outside thru cylinder front-end block Shock absorber/accelerator comprises piston with sealing structures moving axially in inner chamber, which communicates with outer chamber thru aperture(s). Air cylinder piston meets the protruded rod of the shock absorber/accelerator piston and starts to move it thus pushing volume of compressed air through provided aperture from inner chamber to outer chamber. Piston sealing structures seal air coming through the aperture thereby isolating compressed air in the outer chamber from the inner chamber. Compressed air coming through the open venting valve forces pistons to move in opposite direction.

Abstract: A powerful high frequency shock absorber/accelerator uses compressed air but maintains a substantially uniform level of force throughout retraction and extension strokes. A piston moving in an inner chamber compresses gas in the chamber. Initially, an aperture allows compressed gas to be pushed to an outer storage chamber surrounding the inner chamber. As the piston moves further, sealing structure seals gas coming through the aperture thereby isolating the compressed air in the outer chamber from the inner chamber. At the end of the retraction stroke the small amount of remaining air is vented to outside and the piston faces a small counterforce-generating member. When the extension stroke is initiated the counterforce-generating member moves the piston a small distance until the seal is broken. The force of the compressed air rushing back into the inner chamber drives the extension stroke. Additional embodiments include replacing outer chamber with external source of gas.

Abstract: High frequency shock absorber/accelerator built in at any or both end of conventional air cylinder that includes piston moving axially inside cylinder body and sealed against inner surface of body by sealing structure. Cylinder piston rod protrudes outside thru cylinder front-end block Shock absorber/accelerator comprises piston with sealing structures moving axially in inner chamber, which communicates with outer chamber thru aperture(s). Air cylinder piston meets the protruded rod of the shock absorber/accelerator piston and starts to move it thus pushing volume of compressed air through provided aperture from inner chamber to outer chamber. Piston sealing structures seal air coming through the aperture thereby isolating compressed air in the outer chamber from the inner chamber. Compressed air coming through the open venting valve forces pistons to move in opposite direction.

Abstract: High frequency shock absorber/accelerator built in at any or both end of conventional air cylinder that includes piston moving axially inside cylinder body and sealed against inner surface of body by sealing structure. Cylinder piston rod protrudes outside thru cylinder front-end block Shock absorber/accelerator comprises piston with sealing structures moving axially in inner chamber, which communicates with outer chamber thru aperture(s). Air cylinder piston meets the protruded rod of the shock absorber/accelerator piston and starts to move it thus pushing volume of compressed air through provided aperture from inner chamber to outer chamber. Piston sealing structures seal air coming through the aperture thereby isolating compressed air in the outer chamber from the inner chamber. Compressed air coming through the open venting valve forces pistons to move in opposite direction.

Abstract: A powerful high frequency shock absorber/accelerator uses compressed air but maintains a substantially uniform level of force throughout retraction and extension strokes. A piston moving in an inner chamber compresses gas in the chamber. Initially, an aperture allows compressed gas to be pushed to an outer storage chamber surrounding the inner chamber. As the piston moves further, sealing structure seals gas coming through the aperture thereby isolating the compressed air in the outer chamber from the inner chamber. At the end of the retraction stroke the small amount of remaining air is vented to outside and the piston faces a small counterforce-generating member. When the extension stroke is initiated the counterforce-generating member moves the piston a small distance until the seal is broken. The force of the compressed air rushing back into the inner chamber drives the extension stroke. Additional embodiments include replacing outer chamber with external source of gas.

Abstract: High frequency shock absorber/accelerator built in at any or both end of conventional air cylinder that includes piston moving axially inside cylinder body and sealed against inner surface of body by sealing structure. Cylinder piston rod protrudes outside thru cylinder front-end block Shock absorber/accelerator comprises piston with sealing structures moving axially in inner chamber, which communicates with outer chamber thru aperture(s). Air cylinder piston meets the protruded rod of the shock absorber/accelerator piston and starts to move it thus pushing volume of compressed air through provided aperture from inner chamber to outer chamber. Piston sealing structures seal air coming through the aperture thereby isolating compressed air in the outer chamber from the inner chamber. Compressed air coming through the open venting valve forces pistons to move in opposite direction.

Abstract: A powerful high frequency shock absorber/accelerator uses compressed air but maintains a substantially uniform level of force throughout retraction and extension strokes. A piston moving in an inner chamber compresses gas in the chamber. Initially, an aperture allows compressed gas to be pushed to an outer storage chamber surrounding the inner chamber. As the piston moves further, sealing structure seals gas coming through the aperture thereby isolating the compressed air in the outer chamber from the inner chamber. At the end of the retraction stroke the small amount of remaining air is vented to outside and the piston faces a small counterforce-generating member. When the extension stroke is initiated the counterforce-generating member moves the piston a small distance until the seal is broken. The force of the compressed air rushing back into the inner chamber drives the extension stroke. Additional embodiments include replacing outer chamber with external source of gas.

Abstract: A powerful high frequency shock absorber/accelerator uses compressed air but maintains a substantially uniform level of force throughout retraction and extension strokes. A piston moving in an inner chamber compresses gas in the chamber. Initially, an aperture allows compressed gas to be pushed to an outer storage chamber surrounding the inner chamber. As the piston moves further, sealing structure seals gas coming through the aperture thereby isolating the compressed air in the outer chamber from the inner chamber. At the end of the retraction stroke the small amount of remaining air is vented to outside and the piston faces a small counterforce-generating member. When the extension stroke is initiated the counterforce-generating member moves the piston a small distance until the seal is broken. The force of the compressed air rushing back into the inner chamber drives the extension stroke. Additional embodiments include replacing outer chamber with external source of gas.

Abstract: An automatic distribution machine includes a plurality of bin modules, each bin module being adapted to dispense packages onto a conveyor belt or the like. The bin modules are removable and interchangeable, thereby facilitating replacement if one fails. A sorting operation performed by the machine is controlled by a computer, which communicates with the bin modules through a common data bus. Expansion of the sorting operation can be achieved by extending the data bus to additional bin modules.