Carpenter Co.

Todd A Hanna

Vincent A Piucci, Jr

Charles R Sperry

Charles A Sperry

A mixing chamber assembly which has a reciprocating rod (,) received within a mixing chamber of a mixing chamber member (,). The reciprocating rod (,) is in a non-interference position with the mixing chamber over its entire length within the mixing chamber. The non-interference fit provides for continuous solvent flow about the exterior of the rod and interior of the wall defining the mixing chamber such that solvent drips out the discharge end of the mixing chamber and the rod is free to float or ride on a film of solvent. The ability for the rod to ride on a film of solvent over the entire portion received within the mixing chamber, allows for a much reduced reciprocating motive force requirement and a corresponding freedom to increase the mixing chamber volume. The mixing chamber member is preferably received within a dispenser housing (,) such that it is free to shift behind a dispensing and a non-dispensing mode with a shuttle valve arranged between the housing and mixing chamber to seal off chemical precursors for forming polzurethane foam or the like from entering the mixing chamber when the mixing chamber member is in a non-dispensing mode.

Dispensing system components of a dispensing system and method of manufacturing operating and servicing a dispensing system and components thereof

A foam bag cushion forming system for forming foam bag cushions with a vertical side edge sealer that forms vertical side edge seals in the film material with the foam introduction preferably occurring after the downstream side seal is formed, before the upstream side edge seal is formed, and while the film material is being shifted from one to the other. An upper edge sealer operates to seal the upper end of the film material downstream from the dispenser and preferably also downstream from the side edge sealer. Through operation of the end and side edge sealers and the foam dispenser, a foam bag cushion chain is formed. A bag cushion moving and confinement assembly is positioned to receive the bag chain and features two elongated members defining a bag cushion confinement space between them. At least one of the elongated members supports or represents a bag cushion movement device (e.g., a conveyor) which acts to pull the preferably still interlinked bag cushions along the elongated members until the foam has had sufficient time to cure. In one embodiment, die impressions are supported on at least one of the two elongated members and extend into the foam material to form three dimensional foam cushions. The upper edge sealer is independently adjustable so as to vary bag cushion height while the moving device and side edge sealer can be controlled to form the desired bag length between side edge seal formation.

Automated cushion forming system

A mixing chamber assembly which has a reciprocating rod received within a mixing chamber of a mixing chamber member. The reciprocating rod is in a non-interference position with the mixing chamber over its entire length within the mixing chamber. The non-interference fit provides for continuous solvent flow about the exterior of the rod and interior of the wall defining the mixing chamber such that solvent drips out the discharge end of the mixing chamber and the rod is free to float or ride on a film of solvent. The term 'solvent' can include a combination of solvent and other ingredients such as lubricants, emulsifiers and flow control particles. The ability for the rod to ride on a film of solvent over the entire portion received within the mixing chamber, allows for a much reduced reciprocating motive force requirement and a corresponding freedom to increase the mixing chamber volume. The mixing chamber member is preferably received within a dispenser housing such that it is free to shift behind a dispensing and a non-dispensing mode with a shuttle valve arranged between the housing and mixing chamber to seal off chemical precursors for forming polyurethane foam or the like from entering the mixing chamber when the mixing chamber member is in a non-dispensing mode. A spring can be utilized to maintain the mixing chamber member in a non-dispensing state while a piston arrangement record with a piston chamber formed in the back of the dispenser housing can be used to reciprocate (at preferably different times) both the mixing chamber member and purge rod to the desired positions. A dispensing system is also provided wherein an intermittent, torque-based, and AC motor driven pump to provide the chemical precursors on demand, rather than continuously. Heated conduits are also employed to conduct the pumped chemicals to the dispenser.

Dispensing system, components of a dispensing system, and method of

Mixing chamber assembly having a reciprocating rod within a mixing chamber of a mixing chamber member. The rod is in a non-interference position with the mixing chamber over its entire length within the mixing chamber. The non-interference fit provides continuous solvent flow about the exterior of the rod and interior of the wall defining the mixing chamber so solvent drips out the discharge end of the mixing chamber and the rod is free to float or ride on a solvent film. 'Solvent' can include a combination of solvent and other ingredients such as lubricants, emulsifiers and flow control particles. The rod's ability to ride on a solvent film over the entire portion received within the mixing chamber, allows for a much reduced reciprocating motive force requirement and a corresponding freedom to increase the mixing chamber volume. The mixing chamber member is preferably received within a dispenser housing such that it is free to shift between dispensing and non-dispensing modes with a shuttle valve arranged between the housing and mixing chamber to seal off foam chemical precursors from entering the mixing chamber when in a non-dispensing mode. Solvent flushing preferably includes solvent flow internally with the mixing chamber through the precursor inlet ports when not feeding the chemicals, and through a channel between the mixing chamber member and dispenser housing. A dispensing system is also provided wherein an intermittent, torque-based, and AC motor driven pump provide chemical precursors on demand, rather than continuously.

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Richmond, VA, United States of America

Todd A Hanna