US3600857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated window assembly with movable sash
Assignee: Alcoa Corp
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Filing: 1969-06-11
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Granted: 1971-08-24
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Expires: 1989-06-11
Abstract
Abstract In a window assembly having an outer frame within which inboard and outboard lapping sashes are mounted for horizontal or vertical relative movement, the outer frame includes interior and exterior metal frame members and a rigid plastic or other nonmetallic thermal barrier member therebetween connecting the metal frame members in thermally insulated relation to each other, each sash includes an inner frame embracing the periphery of a glass or other panel and constituted by a metal frame member and a rigid plastic or other nonmetallic thermal insulating frame member respectively defining the entire opposite lateral surfaces of the frame, and the inboard and outboard sashes have their insulating frame members at their exterior and interior sides, respectively, so as to be adjacent to the thermal barrier member of the outer frame. The insulating frame member of each sash desirably includes a web or webs defining the respective lateral surface of the sash frame and flanges extending therefrom and having free marginal portions interlocking with the metal sash frame member to substantially space the latter from the web and to cooperate with the web and the metal frame member in defining cavities therebetween.
Inventors
- 👤 Robert Lewis La Barge
- 👤 Paul Noble Vosburgh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:50
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/04; E06B3/263; E06B3/26347; E06B3/26341; E06B3/30; E06B3/301; E06B3/305
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
245 words
A window assembly comprising an outer frame to be installed in a rough opening in an enclosing wall and including interior and exterior metal frame members for respective exposure to air at interior and exterior ambient temperatures, and a rigid nonmetallic thermal barrier member interlockingly engaged with said interior and exterior metal frame members and disposed therebetween for rigidly assembling together said metal frame members and thermally insulating the latter from each other; and first and second sashes in lapping relation within said frame and being disposed in inboard and outboard relation to the median of said thermal barrier member, at least one of said sashes being movable in parallel relation to the other sash for opening and closing the window, each of said sashes including a panel and an inner frame extending along and embracing the periphery of said panel, each of said inner frames including a metal frame member and a rigid nonmetallic thermal insulating frame member secured to each other and respectively constituting the entire opposite lateral surfaces of said inner frame, said sashes being arranged in said outer frame with said thermal insulating frame member of the inboard sash facing toward the exterior and with said thermal insulating frame member of the outboard sash facing toward the interior for providing an efficient thermal break between all metal frame members of the assembly which are exposed to the interior environment and all metal frame members which are exposed to the exterior environment.
Claim 2
Dependent Claim
245 words
A window assembly comprising an outer frame to be installed in a rough opening in an enclosing wall and including interior and exterior metal frame members for respective exposure to air at interior and exterior ambient temperatures, and a rigid nonmetallic thermal barrier member interlockingly engaged with said interior and exterior metal frame members and disposed therebetween for rigidly assembling together said metal frame members and thermally insulating the latter from each other; and first and second sashes in lapping relation within said frame and being disposed in inboard and outboard relation to the median of said thermal barrier member, at least one of said sashes being movable in parallel relation to the other sash for opening and closing the window, each of said sashes including a panel and an inner frame extending along and embracing the periphery of said panel, each of said inner frames including a metal frame member and a rigid nonmetallic thermal insulating frame member secured to each other and respectively constituting the entire opposite lateral surfaces of said inner frame, said sashes being arranged in said outer frame with said thermal insulating frame member of the inboard sash facing toward the exterior and with said thermal insulating frame member of the outboard sash facing toward the interior for providing an efficient thermal break between all metal frame members of the assembly which are exposed to the interior environment and all metal frame members which are exposed to the exterior environment.
Claim 3
Dependent Claim
95 words
A window assembly according to claim 1, wherein said thermal barrier member of the outer frame is adjacent said thermal insulating frame members, and sealing means are provided between said thermal insulating frame members of said sashes at the portions of said inner frames which are in lapping relation when the window is closed, and between said thermal barrier member of the outer frame and said thermal insulating frame members which are adjacent thereto whereby all heat transfer paths across the framing assembly from the interior surface to the exterior surface thereof will be broken.
Claim 4
Dependent Claim
57 words
A window assembly according to claim 1, in which said thermal barrier member has inwardly directed flanges at said median thereof so as to extend between said inboard and outboard sashes, and sealing means are provided between said thermal insulating frame members of the sashes and the confronting surfaces of said flanges of the thermal barrier member.
Claim 5
Dependent Claim
37 words
A window assembly according to claim 3, in which sealing means are also provided between said thermal insulating frame members of the sashes at the portions of said inner frames which meet when the window is closed.
Claim 6
Dependent Claim
80 words
A window assembly according to claim 4, in which said interior and exterior metal frame members of the outer frame have inwardly directed flanges parallel to, and spaced from said flanges of the thermal barrier member to cooperate therewith in defining guide channels for said sashes therebetween, and sealing means are also provided between said metal frame members of said inboard and outboard sashes and said flanges of the interior and exterior metal frame members, respectively, of the outer frame.
Claim 7
Dependent Claim
101 words
A window assembly according to claim 1, in which said thermal insulating frame member of each of said sashes includes web means defining the respective lateral surface of the inner frame and flanges extending from said web means at substantial angles to the latter and having free marginal portions at which interlocking engagement with the respective metal frame member exclusively occurs to secure together said metal and thermal insulating frame members, said flanges substantially spacing said web means from said respective frame member and cooperating with said web means and said respective frame member to define at least one cavity therebetween.
Claim 8
Dependent Claim
39 words
A window assembly according to claim 6, in which each of said flanges has an extent of at least one-fourth inch in the direction from said web means to its marginal portion engaged with said respective metal frame member.
Claim 9
Dependent Claim
104 words
A window assembly according to claim 6, in which said thermal insulating frame member and said metal frame member of the inner frame of each sash are constituted by respective framing elements extending along the top, bottom and sides of the respective panel, and in which said flanges of each framing element included in said thermal insulating frame member effects said interlocking engagement with the associated framing element of the respective metal frame member at grooves therealong opening inwardly and outwarDly, respectively, and receiving oppositely directed edges, whereby to prevent relative lateral or inward and outward movements of the framing elements thus interlockingly engaged.
Claim 10
Dependent Claim
61 words
A window assembly according to claim 6, in which said thermal barrier member has inwardly directed flanges at said median thereof so as to extend between said inboard and outboard sashes, and sealing means are provided between said web means of said thermal insulating frame members of the sashes and the confronting surfaces of said flanges of the thermal barrier member.
Claim 11
Dependent Claim
41 words
A window assembly according to claim 9, in which sealing means are also provided between said web means of the thermal insulating frame members of the sashes at the portions of the inner frames which meet when the window is closed.
Claim 12
Dependent Claim
54 words
A window assembly according to claim 10, in which said sealing means between the portions of the inner frames which meet when the window is closed includes pile strips extending along the respective web means of the thermal insulating frame means, and each engaging the web means of the other thermal insulating frame means.
Claim 13
Dependent Claim
43 words
A window assembly according to claim 6, in which said thermal barrier member of the outer frame includes a web interposed between said interior and exterior metal frame members of the outer frame and having a lateral extent of at least one-fourth inch.
Claim 14
Dependent Claim
61 words
A window assembly according to claim 1, in which said sashes are horizontally movable relative to each other within said outer frame, and said outer frame includes a sill portion at which said thermal barrier member thereof has a shelf portion extending to the exterior and interior of said median and on which said outboard and inboard sashes are movably supported.
Claim 15
Dependent Claim
65 words
A window assembly according to claim 1, in which said sashes are vertically movable relative to each other within said outer frame, and the inboard sash has an elastic bumper and thermal sealing strip extending along the lower margin of its thermal insulating frame member engageable with said thermal barrier member of the outer frame when said inboard sash is in its lowermost closed position.
Claim 16
Dependent Claim
127 words
In a window having a panel and a frame extending along and embracing the periphery of said panel, said frame comprising a metal frame member and a rigid nonmetallic thermal insulating frame member respectively constituting the entire opposite lateral surfaces of said frame for exposure to disparate ambient air temperatures, said insulating frame member including web means defining the lateral surface of said frame constituted by said insulating frame member and flanges extending from said web means at substantial angles to the latter and having free marginal portions in interlocking engagement with said metal frame member, said flanges substantially spacing said web means from the metal frame member and said web means and flanges cooperating with said metal frame member to define at least one cavity therebetween.
Claim 17
Dependent Claim
127 words
In a window having a panel and a frame extending along and embracing the periphery of said panel, said frame comprising a metal frame member and a rigid nonmetallic thermal insulating frame member respectively constituting the entire opposite lateral surfaces of said frame for exposure to disparate ambient air temperatures, said insulating frame member including web means defining the lateral surface of said frame constituted by said insulating frame member and flanges extending from said web means at substantial angles to the latter and having free marginal portions in interlocking engagement with said metal frame member, said flanges substantially spacing said web means from the metal frame member and said web means and flanges cooperating with said metal frame member to define at least one cavity therebetween.
Claim 18
Dependent Claim
37 words
A window according to claim 15, in which each of said flanges has an extent of at least one-fourth inch in the direction from said web means to its marginal portion engaged with said metal frame member.
Claim 19
Dependent Claim
92 words
A window according to claim 15, in which said thermal insulating frame member and said metal frame member are constituted by respective framing elements extending along straight edges of said panel, and in which said flanges of each framing element included in said thermal insulating frame member and the associated framing element of the metal frame member have cooperative grooves therealong opening inwardly and outwardly and oppositely directed edges received in said grooves for said interlocking engagement, whereby to prevent lateral or inward and outward movements of the framing elements thus engaged.
References Cited (Backward Citations)
US3302354A
Cited
US3420026A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |