Patent US4984400A successfully refreshed from Google Patents.
US4984400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clean room channel wall system
Assignee: Individual
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Filing: 1989-11-13
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Granted: 1991-01-15
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Expires: 2009-11-13
Abstract
Abstract A non-progressive clean room wall assembly comprising an extruded framing member as a means of joining panels, and framing windows and doors. Each framing member has an elongated body with front and back side. The front side being seamless to prevent particulate accumulation, with wall panel support flanges to hold wall panels, window panels, or doors. Glazing spline is inserted into receptor grooves on the side to secure the panels in place. The back side of the framing member has a channel shaped utility chase area to hold fittings which secure the framing member to the floor or ceiling or another framing member, as well as attaching mechanical and electrical equipment. A channel closure strip may be inserted into the utility chase area to form a double wall system with two equal front sides whose flanges hold a thicker double wall panel. Both single wall and double wall assemblies may be installed and demounted from the back, outside the clean room environment. Modifications are made to the front surface of the framing member to form inside and outside corners.
Inventors
- 👤 Douglas F. Bockmiller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:48
CPC Classifications
E; E04; E04H; E04H1/00; E04H1/12; E04H1/1277; E04B; E04B2/00; E04B2/74; E04B2/7407; E04B2/7409
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
147 words
A framing member for supporting at least one wall panel comprising: An elongated body having a straight front seamless face surface and having a pair of legs opposed to one another and perpendicular to said front seamless face surface; at least one elongated panel support flange having an elongated edge joined to said elongated body thereby forming said front seamless face surface of said framing member which includes said front seamless face surface of said body contiguous with front surfaces of said flanges; at least one elongated glazing spline normal to said leg and in close proximity to a rear surface of said panel support flange, said leg having an elongated receptor groove parallel to and operably positioned at a distance from a backsurface of said flange to securely engage said spline and permit a panel butt surface to be secured between said flange and said spline.
Claim 2
Dependent Claim
147 words
A framing member for supporting at least one wall panel comprising: An elongated body having a straight front seamless face surface and having a pair of legs opposed to one another and perpendicular to said front seamless face surface; at least one elongated panel support flange having an elongated edge joined to said elongated body thereby forming said front seamless face surface of said framing member which includes said front seamless face surface of said body contiguous with front surfaces of said flanges; at least one elongated glazing spline normal to said leg and in close proximity to a rear surface of said panel support flange, said leg having an elongated receptor groove parallel to and operably positioned at a distance from a backsurface of said flange to securely engage said spline and permit a panel butt surface to be secured between said flange and said spline.
Claim 3
Dependent Claim
39 words
The framing member of claim 1 wherein said front seamless face surface of said framing member is flat whereby a panel secured by one said support flange to coplanar with a panel secured by said other panel support flange.
Claim 4
Dependent Claim
16 words
The framing member of claim 1 wherein said framing member is extruded of a non-ferrous material.
Claim 5
Dependent Claim
14 words
The framing member of claim 1 wherein said framing member is an aluminum extrusion.
Claim 6
Dependent Claim
31 words
The framing member of claim 1 wherein said wall panel support flange of said framing member has an elongated outside edge that is radiused contiguous with said front seamless face surface.
Claim 7
Dependent Claim
76 words
The framing member of claim 1 wherein said front seamless face surface of said body includes a first and a second elongated section each bounded by said first and second panel support flanges and meeting at an angle to form an elongated corner intermediate said support flanges whereby a panel secured to said backside of said flange is oriented at said angle with respect to another panel secured to said rear surface of said second flange.
Claim 8
Dependent Claim
18 words
The framing member of claim 6 wherein said angle is obtuse whereby said corner is an exterior corner.
Claim 9
Dependent Claim
18 words
The framing member of claim 7 wherein said angle is acute whereby said corner is an interior corner.
Claim 10
Dependent Claim
63 words
A framing member as in claim 1 which further comprises: two straight elongated legs, each leg parallel to one another and each bounded by a straight elongated front leg edge joined to an inside surface of said body to provide a channel shaped utility access area having an open backside and bounded on three sides by inside surfaces of said legs and body.
Claim 11
Dependent Claim
91 words
A framing member as in claim 1 which further comprises: a channel closure strip having a face with a wall panel support flanges extending laterally of said face means attached to said inside surfaces of said utility access area for securing said channel closure strip straddled across said open backside of said utility access area with one closure flange extending away from each leg whereby a panel butt surface of a panel may be secured normal to one of said legs between said front flange and one of said closure flanges.
Claim 12
Dependent Claim
44 words
A framing member as in claim 10 wherein said securing means comprises an elongated receptor arm attached to said inside surface of each leg thereby providing a shoulder against which nuts may be positioned to bolt said channel closure strip against said receptor arm.
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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) | 1994-01-14 | 1994-07-16 | 1995-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-14 | 1998-07-16 | 1999-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-14 | 2002-07-16 | 2003-01-15 | $7700.00 | Window Closed / Lapsed |