Patent ID: 8240520
Filing Date: 2012-08-14
Classification: F42D,G01F,Y10T

Abstract:
1. A dispenser for extruding a viscous material, comprising: a housing having a longitudinal axis, a body with a wall, and defining an enclosure for containing a quantity of a viscous material, said housing having an outlet opening on a first end of said housing and an inlet opening in communication with said enclosure on a second end of said housing, said housing further constructed of transparent material; a partition in slidable and sealed engagement with an interior surface of said enclosure along said longitudinal axis, said partition variably defining a first and second area within said enclosure wherein said first area is adapted to receive said viscous material between a first side of said partition and said outlet opening and said second area is variably defined between a second side of said partition and said inlet opening, wherein said partition is formed from a non-metallic material and is further formed with relieved corners or edges; a nozzle section formed with a tapered interior outlet cavity, said nozzle section comprises a first nozzle end section and an opposing second nozzle end section, said first nozzle end section is formed with a first and second nozzle flange which are formed substantially perpendicular to each other, said first nozzle flange comprises an insertion flange section which is adapted to coaxially insert into and sealingly engage into said outlet opening on said first end of said housing, wherein said insertion flange section delimits a seat section of said housing and is adapted for a press fit insertion into said outlet opening, wherein said insertion flange has an outer end oriented towards said partition which is formed to reduce a localized area of high pressure within said viscous material due to compression of said material between said insertion flange's surface and the advancing partition as the partition is advanced to the fully displaced position; a collar adapter coaxially coupled with said housing on said first end, wherein said collar adapter is formed with a collar adapter flange along an outer collar adapter surface extending and oriented away from said longitudinal axis, said collar adapter further having internal threads on an inner surface oriented towards said longitudinal axis, wherein an outer section of said housing in proximity to said first end of said housing is threaded to facilitate threaded engagement of said collar adapter internal threads; a hinged circular clamp formed with a flange-receiving groove circumscribed about its inner surface, said clamp is fitted over adjoining said collar adapter flange and said second nozzle section flange and is tightened thereby compressing said collar adapter flange and said second nozzle section flange so as to secure said nozzle section to said first end of said housing, wherein said hinged circular clamp is adapted to secure said nozzle section at an operating pressures of at least 100-250 psi, and is formed to be strength-rated to withstand a maximum operating pressure that exceeds the strength rating of said housing itself of at least 750 pounds per square inch; and a first and second control mechanisms in selectable communication between a pressurized fluid source and said second area; wherein said enclosure is formed with distance reference markings along said longitudinal axis adapted to indicate a distance said partition has been displaced along said longitudinal axis; whereby said control mechanisms are adapted to selectively admit pressurized fluid into said second area to displace said partition along said longitudinal axis toward said outlet opening, thereby forcing said viscous material to be extruded from said first area though said outlet opening; wherein said first control mechanism is a proportional flow control valve; wherein said longitudinal axis is defined by a movement of travel of said partition within said housing and a lateral axis is defined by a line that is substantially orthogonal to said longitudinal axis, wherein said housing is formed with said transparent material to permit viewing of said partition through said housing's wall that is in said slidable and sealed engagement with said partition, said transparent material section of said housing comprises a section which is defined as at least forty percent of said housing's body with a center section substantially at a mid point between opposing ends of said housing and permitting viewing through a plane of 360 degrees of said lateral axis through a portion of said movement of travel of said partition; wherein said housing's interior surface and a side of said partition facing said first area are formed to prevent a pinch point or a localized high pressure zone between said side of said partition and sections of said housing's interior surfaces which prevent lateral movement of said partition toward said opening in said housing; wherein said second control mechanism is a pressure relief valve whereby the maximum pressure in said enclosure is limited.