Patent US3509884A successfully refreshed from Google Patents.
US3668808A
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Window glass retention system
Assignee: American Velcro Inc
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Filing: 1971-05-12
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Granted: 1972-06-13
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Expires: 1991-05-12
Abstract
Abstract A retention system for window frames incorporating hook and loop fastener elements and novel sealing means which discourages unauthorized tampering with the retaining elements.
Inventors
- 👤 Joseph Perina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:31
CPC Classifications
E; E06; E06B; E06B1/00; E06B1/56; E06B1/60; E06B3/00; E06B3/54; E06B3/58; E06B3/5807; Y; Y10; Y10S; Y10S52/00; Y10S52/13; Y10T; Y10T428/00; Y10T428/24; Y10T428/24008; Y10T428/24017
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
In a window glass frame having channel members for receiving edge portions of a window pane adapted for installation in a building structure, the facing portions of said frame and building structure each having mating hook and loop fastener means, said building structure defining an L-shaped recess for receiving said frame and for closely encompassing the periphery thereof, the improvement comprising said channel members having a toe portion extending inwardly from the periphery of said frame toward said building structure beyond the outwardly projecting extent of the hook and loop fastener element on said building structure to prevent the ingress of a mechanical instrument from around said frame to disrupt the engagement between said hook and loop fastener elements.
Claim 2
Dependent Claim
119 words
In a window glass frame having channel members for receiving edge portions of a window pane adapted for installation in a building structure, the facing portions of said frame and building structure each having mating hook and loop fastener means, said building structure defining an L-shaped recess for receiving said frame and for closely encompassing the periphery thereof, the improvement comprising said channel members having a toe portion extending inwardly from the periphery of said frame toward said building structure beyond the outwardly projecting extent of the hook and loop fastener element on said building structure to prevent the ingress of a mechanical instrument from around said frame to disrupt the engagement between said hook and loop fastener elements.
Claim 3
Dependent Claim
18 words
The frame according to claim 1 wherein said toe is in a sealing engagement with said building structure.
Claim 4
Dependent Claim
18 words
The frame according to claim 1 wherein said toe is tapered toward the interior of said adjacent structure.
References Cited (Backward Citations)
US3251399A
Cited
US3276178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |