Diffusion device
AssigneeParkson Corporation
InventorRudolf Messner
Life of this patent
Estimating the term…
Abstract
In the representative embodiments of diffusion devices disclosed in the specification, a diffusor support member and a flexible sheet-like diffusor are connected in sealing relation along peripheral edges by continuous clamping and sealing arrangements. One form of the clamping and sealing arrangement comprises a U-shaped clamp which embraces the edge of the support member and the peripheral edge of the diffusor. In another form of clamping and sealing arrangement, two strip members held apart by a third strip are inserted into a groove in the support member so as to clamp the diffusor in the groove. Additional strengthening members for the support member and hold-down members for the diffusor are also disclosed.
Claims14
A diffusion device comprising support means having a diffuser-supporting surface, flexible sheet-like diffuser means positioned on the support means adjacent to the supporting surface, and connecting means providing a removable, gas-tight connection between the periphery of the diffusor means and the periphery of the support means and arranged so that the diffusor means may be supported by the diffuser-supporting surface of the support means in the absence of gas pressure tending to separate the diffuser means from the support means, wherein the connecting means comprises continuous resilient clamping and sealing means engaging peripheral regions of the diffusor means and the support means to resiliently retain them in gas-tight sealing engagement along the periphery of the diffusor means and diffusor-retaining means for retaining the diffusor means adjacent to the diffusor-supporting surface at a location within the region defined by the periphery of the diffusor means and the support means to inhibit excessive separation of the diffusor means from the diffusor-supporting surface, wherein the diffusor-retaining means comprises at least one hold-down member disposed adjacent to the surface of the diffusor means within the periphery of the device, and U-shaped strip means embracing opposed edges of the support means and having L-shaped portions providing opposed grooves to receive the opposite ends of the hold-down member.
A diffusion device comprising support means having a diffusor-supporting surface, flexible sheet-like diffusor means positioned on the support means adjacent to the supporting surface, and connecting means providing a removable, gas-tight connection between the periphery of the diffusor means and the periphery of the support means and arranged so that the diffusor means may be supported by the diffusor-supporting surface of the support means in the absence of gas pressure tending to separate the diffusor means from the support means, wherein the connecting means comprises continuous resilient clamping and sealing means engaging peripheral regions of the diffusor means and the support means to resiliently retain them in gas-tight sealing engagement along the periphery of the diffusor means and diffusor-retaining means for retaining the diffusor means adjacent to the diffusor-supporting surface at a location within the region defined by the periphery of the diffusor means and the support means to inhibit excessive separation of the diffusor means from the diffusor-supporting surface, wherein the diffusor-retaining means comprises at least one hold-down member having a self-supporting structure and disposed adjacent to the surface of the diffusor means within the periphery of the device and the hold-down member has an L-shaped cross-section and the L-shaped member has a portion projecting perpendicularly away from the supporting surface of the support means with a middle section and end sections which are tapered from the middle section away from the supporting surface.
Dependencies are inferred from the claim text.