US4525966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window systems
Assignee: LB Plastics Ltd
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Filing: 1982-07-16
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Granted: 1985-07-02
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Expires: 2002-07-16
Abstract
Abstract A window construction incorporates a pane or panes of glass retained in a frame by glazing beads inserted between the glass and the frame at the outside of the window and incorporates means for preventing disengagement of the glazing beads other than by breaking the glass. The glazing beads may incorporate oppositely acting retaining formations engageable with at least one co-operating retaining member on the frame, each retaining formation being arranged to be more firmly engaged by movement of the associated bead in a direction to disengage the other formation. In an alternative arrangement the glazing beads may incorporate retaining formations which extend beyond and are retained by the edges of the glass following completion of the glazing process.
Inventors
- 👤 Leon G. Litchfield
- 👤 Terence Hardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:41
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/54; E06B3/58; E06B3/5807; E06B3/5821
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
107 words
A window construction incorporating a pane or panes of glass retained in a frame by elongated glazing beads inserted between the glass and the frame at the outside of the window, each glazing bead comprising first retaining means at or adjacent its outer edge engageable with a co-operating retaining member on the frame and second retaining means at or adjacent its inner edge, said second retaining means comprising oppositely acting retaining formations engageable with at least one co-operating retaining member on the frame, each retaining formation being arranged to be more firmly engaged by movement of the associated bead in a direction to disengage the other formation.
Claim 2
Dependent Claim
107 words
A window construction incorporating a pane or panes of glass retained in a frame by elongated glazing beads inserted between the glass and the frame at the outside of the window, each glazing bead comprising first retaining means at or adjacent its outer edge engageable with a co-operating retaining member on the frame and second retaining means at or adjacent its inner edge, said second retaining means comprising oppositely acting retaining formations engageable with at least one co-operating retaining member on the frame, each retaining formation being arranged to be more firmly engaged by movement of the associated bead in a direction to disengage the other formation.
Claim 3
Dependent Claim
24 words
A window construction according to claim 1 wherein said retaining formations comprise hooked projections adapted for engagement with complimentary formations on said retaining member.
Claim 4
Dependent Claim
44 words
A window construction according to claim 2 wherein said projections are carried by spaced parallel ribs formed on said glazing bead, the projections being directed towards one another and being adapted to engage with a retaining member of T-shaped cross-section carried by said frame.
Claim 5
Dependent Claim
25 words
A window construction according to claim 3 wherein said glazing beads are constructed from plastics material and of the same uniform cross-section throughout their lengths.
Claim 6
Dependent Claim
38 words
A window construction according to claim 4 including flexible sealing strips interposed between the outer face of said glass and said glazing bead and between the inner face of said glass and a fixed abutment on said frame.
Claim 7
Dependent Claim
26 words
A window construction according to claim 5 wherein said flexible sealing strips are engaged in longitudinal recesses formed in said glazing bead and in said abutment.
Claim 8
Dependent Claim
30 words
A window construction according to claim 3 wherein said glass is a double-glazing unit comprising inner and outer glass panes spaced from one another and sealed together around their edges.
References Cited (Backward Citations)
CA729405A
Cited
US2830684A
Cited
US3501884A
Cited
CH580219A5
Cited
US4030260A
Cited
DE2704808A1
Cited
CH623104A5
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-01 | 1988-12-31 | 1989-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-01 | 1992-12-31 | 1993-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-01 | 1996-12-31 | 1997-07-02 | $7700.00 | Window Closed / Lapsed |