Patent US3834543A successfully refreshed from Google Patents.
US3834543A
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Membrane mounting assembly and method
Assignee: General Electric Co
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Filing: 1972-09-01
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Granted: 1974-09-10
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Expires: 1992-09-01
Abstract
Abstract There is provided a membrane mounting assembly comprising a frame having a membrane-covered central opening and a selectively rupturable border, e.g., perimeter of perforations in the membrane, within the opening. The membrane is mounted on the open end of a hollow cylindrical structure, such as an electrode holder, without tearing and the need to trim any excess, by centering such an assembly over the structure, fixing the membrane to the open end, e.g., by locking in an annular recess with an annular gasket, and tearing the frame and excess membrane away from the structure along the selectively rupturable border.
Inventors
- 👤 A Dreves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:09
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B01D61/00; B01D61/24; B01D61/28; B01D63/00; B01D63/08; B01D63/087; G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/40; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/53; Y10T29/53657
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
80 words
A membrane mounting assembly comprising a frame having a central opening and a membrane supported by said frame and covering said opening, said membrane having a selectively rupturable border within and adjacent to the edge of said opening, said opening and said border being larger than an opening in a membrane mount coverable by the membrane, the excess portion of the membrane outside the border and said frame being removable after engagement with a membrane mount by rupturing said border.
Claim 2
Dependent Claim
80 words
A membrane mounting assembly comprising a frame having a central opening and a membrane supported by said frame and covering said opening, said membrane having a selectively rupturable border within and adjacent to the edge of said opening, said opening and said border being larger than an opening in a membrane mount coverable by the membrane, the excess portion of the membrane outside the border and said frame being removable after engagement with a membrane mount by rupturing said border.
Claim 3
Dependent Claim
31 words
A membrane mounting assembly as defined in claim 1 wherein said selectively rupturable border within and adjacent to the edge of said opening comprises a plurality of perforations in said membrane.
Claim 4
Dependent Claim
15 words
A membrane mounting assembly as defined in claim 1 wherein said frame is substantially planar.
Claim 5
Dependent Claim
30 words
A membrane mounting assembly as defined in claim 1 wherein said central opening and said selectively rupturable border within and adjacent to the edge of said opening are substantially circular.
Claim 6
Dependent Claim
31 words
A membrane mounting assembly as defined in claim 2 wherein said perforations are slots and the unperforated membrane between said slots comprises a minor fraction of the perimeter of said border.
Claim 7
Dependent Claim
48 words
A membrane mounting assembly as defined in claim 4 wherein said selectively rupturable border within and adjacent to the edge of said opening comprises a plurality of slots in said membrane and the unperforated membrane between said slots comprises a minor fraction of the circumference of said border.
Claim 8
Dependent Claim
16 words
A membrane mounting assembly as defined in claim 1 wherein said membrane is permeable and non-porous.
Claim 9
Dependent Claim
14 words
A membrane mounting assembly as defined in claim 7 wherein said membrane comprises polypropylene.
Claim 10
Dependent Claim
15 words
A membrane mounting assembly as defined in claim 7 wherein said membrane comprises a polyorganosiloxane.
Claim 11
Dependent Claim
22 words
A membrane mounting assembly as defined in claim 7 wherein said membrane comprises a copolymer of a polyorganosiloxane and an aromatic polycarbonate.
Claim 12
Independent Claim
119 words
A method for mounting a thin membrane on an open end of a hollow elongated cylindrical structure comprising placing the membrane on a frame having a central opening larger than the open end of said structure to cover said opening with the membrane; perforating the membrane in a pattern to produce a selectively rupturable border within and adjacent to the edge of said opening, said selectively rupturable border being larger than the open end of said hollow elongated cylindrical structure; placing the membrane supported by the frame over the open end of said hollow elongated structure; and applying sufficient force to said frame to remove it and the excess membrane by tearing the membrane along the selectively rupturable border.
Claim 13
Independent Claim
119 words
A method for mounting a thin membrane on an open end of a hollow elongated cylindrical structure comprising placing the membrane on a frame having a central opening larger than the open end of said structure to cover said opening with the membrane; perforating the membrane in a pattern to produce a selectively rupturable border within and adjacent to the edge of said opening, said selectively rupturable border being larger than the open end of said hollow elongated cylindrical structure; placing the membrane supported by the frame over the open end of said hollow elongated structure; and applying sufficient force to said frame to remove it and the excess membrane by tearing the membrane along the selectively rupturable border.
Claim 14
Dependent Claim
44 words
A method as defined in claim 11 wherein said hollow elongated cylindrical structure is provided with an annular recess peripherally disposed adjacent said open end and including the step of locking the membrane in said recess by placing an annular gasket in said recess.
Claim 15
Dependent Claim
26 words
A method as defined in claim 12 wherein said hollow elongated cylindrical structure is an electrode holder assembly and said annular gasket is a stretchable 0-ring.
Claim 16
Dependent Claim
13 words
A method as defined in claim 11 wherein said frame is substantially planar.
Claim 17
Dependent Claim
27 words
A method as defined in claim 11 wherein said central opening in the frame in said membrane mounting assembly and the selectively rupturable border are substantially circular.
Claim 18
Dependent Claim
29 words
A method as defined in claim 11 wherein the perforations are slots and the unperforated membrane between said slots comprises a minor fraction of the circumference of said border.
Claim 19
Dependent Claim
14 words
A method as defined in claim 11 wherein said membrane is permeable and non-porous.
Claim 20
Dependent Claim
12 words
A method as defined in claim 17 wHerein said membrane is polypropylene.
Claim 21
Dependent Claim
13 words
A method as defined in claim 17 wherein said membrane comprises a polyorganosiloxane.
Claim 22
Dependent Claim
20 words
A method as defined in claim 17 wherein said membrane comprises a copolymer of a polyorganosiloxane and an aromatic polycarbonate.
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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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |