Patent US4899491A successfully refreshed from Google Patents.
US4899491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sun filter for a louver panel
Assignee: Individual
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Filing: 1988-04-13
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Granted: 1990-02-13
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Expires: 2008-04-13
Abstract
Abstract A sun filter for a glass louver panel is disclosed which filters out the heat, glare and the ultraviolet rays which normally penetrate through the glass. The sun filter is formed of a resilient, plastic material such that it may be easily snapped over the existing louver panel without dismantling the panel from its support structure or in any way interfering with the normal operation of the louver panel. The filter has a resilient filter panel which bears against a face of the louver panel and frictional attaching legs which frictionally engage opposite edges of the louver panel to removably affix the sun filter to the panel.
Inventors
- 👤 Gordon Okumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:45
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B7/00; E06B7/02; E06B7/08; E06B7/084; E06B9/26; E06B9/38; E06B9/386
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
92 words
A sun filter to alter the light transmitting characteristics of a transparent louver panel having opposite edges separated by a distance d comprising: (a) a non-opaque, resilient filter panel defining first and second edges; and, (b) first and second frictional attachment legs extending from the first and second edges of the panel with the closest portions of the legs being separated a distance less than d such that the legs snap over and frictionally contact the opposite edges of the louver panel to removably attach the sun filter to the louver panel.
Claim 2
Dependent Claim
92 words
A sun filter to alter the light transmitting characteristics of a transparent louver panel having opposite edges separated by a distance d comprising: (a) a non-opaque, resilient filter panel defining first and second edges; and, (b) first and second frictional attachment legs extending from the first and second edges of the panel with the closest portions of the legs being separated a distance less than d such that the legs snap over and frictionally contact the opposite edges of the louver panel to removably attach the sun filter to the louver panel.
Claim 3
Dependent Claim
17 words
The sun filter according to claim 1 wherein the first and second friction attaching legs are resilient.
Claim 4
Dependent Claim
27 words
The sun filter according to claim 1 wherein at least one of the first and second friction attaching legs defines an acute angle with the filter panel.
Claim 5
Dependent Claim
23 words
The sun filter according to claim 1 wherein both the first and second friction attaching legs define acute angles with the filter panel.
Claim 6
Dependent Claim
20 words
The sun filter according to claim 1 wherein the filter panel is formed so as to filter out ultraviolet rays.
Claim 7
Dependent Claim
13 words
The sun filter according to claim 1 wherein the filter panel is translucent.
Claim 8
Dependent Claim
14 words
The sun filter according to claim 1 wherein the filter panel is color tinted.
Claim 9
Dependent Claim
49 words
The sun filter according to claim 1 wherein the first friction attaching leg comprises: (a) a first leg portion extending substantially perpendicular to the filter panel and defining a first distal edge; and, (b) a second leg portion extending from the first distal edge of the first leg portion.
Claim 10
Dependent Claim
25 words
The sun filter according to claim 8 wherein the second leg portion of the first friction attaching leg extends substantially parallel to the filter panel.
Claim 11
Dependent Claim
27 words
The sun filter according to claim 8 wherein the second leg portion of the first friction attaching leg defines an acute angle with the first leg portion.
Claim 12
Dependent Claim
55 words
The sun filter according to claim 8 wherein the second friction attaching leg comprises: (a) a first leg portion extending substantially perpendicular to the filter panel and defining a second distal edge; and, (b) a second leg portion extending from the second distal edge of the first leg portion of the second friction attaching leg.
Claim 13
Dependent Claim
27 words
The sun filter according to claim 11 wherein the second leg portions of the first and second friction attaching legs extend substantially parallel to the filter panel.
Claim 14
Dependent Claim
31 words
The sun filter according to claim 11 wherein the second leg portions of the first and second friction attaching legs define acute angles with respect to the adjacent first leg portions.
Claim 15
Dependent Claim
107 words
A louver panel assembly comprising: (a) a transparent, generally planar, rigid louver panel structurally supported at either end and having opposite edges separated a distance d; and, (b) a sun filter removably attached to the louver panel to alter the light transmitting characteristics of the louver panel, comprising: (i) a non-opaque, resilient filter panel defining first and second edges; and, (ii) first and second frictional attachment legs extending from the first and second edges of the panel with the closest portions of the legs being separated a distance less than d such that the legs snap over and frictionally contact the opposite edges of the louver panel.
Claim 16
Dependent Claim
107 words
A louver panel assembly comprising: (a) a transparent, generally planar, rigid louver panel structurally supported at either end and having opposite edges separated a distance d; and, (b) a sun filter removably attached to the louver panel to alter the light transmitting characteristics of the louver panel, comprising: (i) a non-opaque, resilient filter panel defining first and second edges; and, (ii) first and second frictional attachment legs extending from the first and second edges of the panel with the closest portions of the legs being separated a distance less than d such that the legs snap over and frictionally contact the opposite edges of the louver panel.
Claim 17
Dependent Claim
25 words
The louver panel assembly according to claim 14 further comprising bracket means attached to either end of the louver panel to structurally support the panel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-12 | 2001-08-14 | 2002-02-13 | $7700.00 | Window Closed / Lapsed |