Patent US5393347A successfully refreshed from Google Patents.
US5393347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for removable weir overflow bath system with gutter
Assignee: PCT Systems Inc
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Filing: 1991-07-23
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Granted: 1995-02-28
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Expires: 2011-07-23
Abstract
Abstract The present invention provides a method and apparatus for a removable weir overflow bath system with gutter which decreases manufacturing costs and increases user flexibility. Manufacturing costs are decreased by forming a weld with a low probability of breakage. Because breakage probability is low material costs and labor costs resulting from bath system manufacture is reduced. Furthermore, the present invention offers increased flexibility since the user need only replace the removable weir to change the scallop characteristics and obtain a new bath system. The preferred embodiment of the present invention includes a four-sided removable weir and a quartz container with gutter. The gutter region of the container is formed by welding a member of an L-shaped quartz structure to the top edge of an open top rectangular quartz container. A resilient material is placed on top of the gutter region along the corner formed by the gutter region and quartz container. The removable weir is placed on top of the resilient material. Pressure is applied to the top of the removable weir so that the resilient material conforms to and forms a seal between the sides and bottom of the removable weir and the gutter region.
Inventors
- 👤 Henry R. Miranda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:45
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0402; H10P72/0406; H10P72/0411; H10P72/0416; Y; Y10; Y10S; Y10S134/00; Y10S134/902
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
197 words
A filtered bath system which comprises: a first container; a first structure welded to said first container forming a container with gutter, said first structure being L-shaped in cross section, one member of said L-shaped structure being generally parallel to a contacting side of said container with gutter while the other member is generally perpendicular to the contacting side of said container with gutter; a second structure having four walls, each wall having two ends, each end joined to an end of another wall, said second structure having an open top and bottom, the top edge of said second structure being scalloped; a resilient material placed between said container with gutter and said second structure, said resilient material forming a seal between said container with gutter and said second structure, said seal between said container with gutter and said second structure preventing fluid flow between the sides of said container with gutter and said second structure yet allowing fluid flow over said top edge of said second structure into said gutter; and a heat conducting material adhered to the said sides and bottom of said first container where heating elements are embedded in said heat conducting material.
Claim 2
Dependent Claim
197 words
A filtered bath system which comprises: a first container; a first structure welded to said first container forming a container with gutter, said first structure being L-shaped in cross section, one member of said L-shaped structure being generally parallel to a contacting side of said container with gutter while the other member is generally perpendicular to the contacting side of said container with gutter; a second structure having four walls, each wall having two ends, each end joined to an end of another wall, said second structure having an open top and bottom, the top edge of said second structure being scalloped; a resilient material placed between said container with gutter and said second structure, said resilient material forming a seal between said container with gutter and said second structure, said seal between said container with gutter and said second structure preventing fluid flow between the sides of said container with gutter and said second structure yet allowing fluid flow over said top edge of said second structure into said gutter; and a heat conducting material adhered to the said sides and bottom of said first container where heating elements are embedded in said heat conducting material.
Claim 3
Dependent Claim
170 words
A semiconductor wafer bath system which comprises: a container with one gutter sidewall, said container having an open top side and constructed for receiving a removable second structure atop said container, said removable second structure having four walls, each wall having two ends, each end joined to an end of another wall, said second structure having an open top and open bottom and a scalloped top edge to form a container with gutter around said open top side; a resilient material placed between said container with one gutter sidewall and said removable structure, said resilient material forming a seal between said container and said removable structure, said seal between said container and said removable structure preventing fluid flow between the sides of said container and said removable structure yet allowing fluid flow over said top edge of said removable structure into said gutter; and a heat conducting material adhered to the said sides and bottom of said container with gutter where heating elements are embedded in said heat conducting material.
Claim 4
Dependent Claim
170 words
A semiconductor wafer bath system which comprises: a container with one gutter sidewall, said container having an open top side and constructed for receiving a removable second structure atop said container, said removable second structure having four walls, each wall having two ends, each end joined to an end of another wall, said second structure having an open top and open bottom and a scalloped top edge to form a container with gutter around said open top side; a resilient material placed between said container with one gutter sidewall and said removable structure, said resilient material forming a seal between said container and said removable structure, said seal between said container and said removable structure preventing fluid flow between the sides of said container and said removable structure yet allowing fluid flow over said top edge of said removable structure into said gutter; and a heat conducting material adhered to the said sides and bottom of said container with gutter where heating elements are embedded in said heat conducting material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-02-27 | 1998-08-29 | 1999-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-27 | 2002-08-29 | 2003-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-27 | 2006-08-29 | 2007-02-28 | $7700.00 | Window Closed / Lapsed |