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US6802545B2
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Window sash lock keeper
Assignee: Truth Hardware Corp
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Filing: 2000-12-20
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Granted: 2004-10-12
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Expires: 2020-12-20
Abstract
Abstract An improved window sash lock keeper is provided having a slot to provide clearance for a burr, which is typically found on a surface upon which such a sash lock keeper is mounted. The improved keeper is typically mounted flush to a surface of an extruded window component. The clearance slot allows the keeper to be mounted with improved precision and thereby reduces interferences caused by misaligned window hardware.
Inventors
- 👤 Edward J. Subliskey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:13
CPC Classifications
E; E05; E05B; E05B15/00; E05B15/02; E05B15/0205; E05B65/00; E05B65/08; E05B65/0811; Y; Y10; Y10T; Y10T292/00; Y10T292/68; Y10T292/688; Y10T292/694; Y10T292/705
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
49 words
In combination a window sash lock keeper and window sash wherein said keeper comprises: a substantially planar back surface; and a slot extending at least partially across the substantially planar back surface wherein the slot provides a clearance for a possible burr or residual protrusion on the window sash.
Claim 2
Dependent Claim
49 words
In combination a window sash lock keeper and window sash wherein said keeper comprises: a substantially planar back surface; and a slot extending at least partially across the substantially planar back surface wherein the slot provides a clearance for a possible burr or residual protrusion on the window sash.
Claim 3
Dependent Claim
47 words
The window sash lock keeper of claim 1 further comprising a generally rectangular cavity and at least one mounting screw through hole, wherein the generally rectangular cavity and the at least one mounting screw through hole each extends through the substantially planar back surface of the keeper.
Claim 4
Dependent Claim
65 words
The window sash lock keeper of claim 2 further comprising: at least one beam formed by at least part of a perimeter of the keeper and by the generally rectangular cavity, the at least one beam having a protrusion having dimensions and shape chosen so that the protrusion extends into the generally rectangular cavity and is capable of being captured by a mating sash lock.
Claim 5
Dependent Claim
17 words
The window sash lock keeper of claim 3 wherein the linear slot is parallel to the beam.
Claim 6
Independent Claim
137 words
A method of mounting a window sash lock keeper to an extruded window component having a burr or residual protrusion thereon comprising: providing a clearance slot in a back surface of said keeper wherein said clearance slot comprises a width and depth which are chosen to accept a typical burr or residual protrusion on a mounting surface of the extruded window component; aligning said keeper and said extruded window component so that said keeper is located to mate properly with a mating window sash lock, said burr or residual protrusion is accepted by said clearance slot and a back surface of said keeper abuts a mounting surface of said extruded window component; securing said keeper to said extruded window component by mechanical fasteners passing through mounting screw holes in said keeper and through said extruded window component.
Claim 7
Independent Claim
137 words
A method of mounting a window sash lock keeper to an extruded window component having a burr or residual protrusion thereon comprising: providing a clearance slot in a back surface of said keeper wherein said clearance slot comprises a width and depth which are chosen to accept a typical burr or residual protrusion on a mounting surface of the extruded window component; aligning said keeper and said extruded window component so that said keeper is located to mate properly with a mating window sash lock, said burr or residual protrusion is accepted by said clearance slot and a back surface of said keeper abuts a mounting surface of said extruded window component; securing said keeper to said extruded window component by mechanical fasteners passing through mounting screw holes in said keeper and through said extruded window component.
Claim 8
Dependent Claim
15 words
The method according to claim 5 wherein said mechanical fasteners comprise self-tapping sheet metal screws.
Claim 9
Dependent Claim
89 words
In combination a window sash lock keeper and window sash wherein the keeper comprises: a front surface and a substantially planar back surface; and a slot extending at least partially across the back surface wherein the slot provides clearance for a possible burr or residual protrusion on the window sash, and wherein the slot is located and oriented relative to a mounting position of the keeper and the possible burr or residual protrusion so that the slot is capable of providing clearance for the possible burr or residual protrusion.
Claim 10
Dependent Claim
89 words
In combination a window sash lock keeper and window sash wherein the keeper comprises: a front surface and a substantially planar back surface; and a slot extending at least partially across the back surface wherein the slot provides clearance for a possible burr or residual protrusion on the window sash, and wherein the slot is located and oriented relative to a mounting position of the keeper and the possible burr or residual protrusion so that the slot is capable of providing clearance for the possible burr or residual protrusion.
Claim 11
Dependent Claim
21 words
The window sash lock keeper of claim 7 further comprising: a generally rectangular cavity extending through the front and back surfaces.
Claim 12
Dependent Claim
37 words
The window sash lock keeper of claim 8 further comprising: at least one beam formed by at least part of a perimeter of the sash lock keeper and at least partially defined by the generally rectangular cavity.
Claim 13
Dependent Claim
27 words
The window sash lock keeper of claim 9 wherein the beam comprises a protrusion that extends into the generally rectangular cavity to receive a window sash lock.
Claim 14
Dependent Claim
16 words
The window sash lock keeper of claim 9 wherein the slot is parallel to the beam.
Claim 15
Dependent Claim
26 words
The window sash lock keeper of claim 7 wherein the front and back surfaces of the keeper together define at least one mounting screw through hole.
Claim 16
Dependent Claim
26 words
The window sash lock keeper of claim 12 further comprising: a shelled volume located on the back surface proximate to and partially intersecting the linear slot.
Claim 17
Dependent Claim
28 words
The window sash lock keeper of claim 13 wherein the shelled volume defines at least one internal mounting screw through hole wall surrounding each mounting screw through hole.
Claim 18
Dependent Claim
19 words
The window sash lock keeper of claim 14 wherein the slot partially intersects the mounting screw through hole wall.
Claim 19
Dependent Claim
17 words
The window sash lock keeper of claim 7 wherein the sash lock keeper is rectangular in shape.
Claim 20
Dependent Claim
18 words
The window sash lock keeper of claim 16 wherein the sash lock keeper is a metal alloy casting.
Claim 21
Dependent Claim
18 words
The window sash lock keeper of claim 7 wherein the sash lock keeper is a metal alloy casting.
Claim 22
Dependent Claim
18 words
The window sash lock keeper of claim 7 wherein the thickness of the keeper is about 0.190 inch.
Claim 23
Dependent Claim
28 words
The window sash lock keeper of claim 7 wherein the width of the slot is about 0.212 inch and the depth of the slot is about 0.050 inch.
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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) | 2007-10-12 | 2008-04-12 | 2008-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-10-12 | 2012-04-12 | 2012-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-10-12 | 2016-04-12 | 2016-10-12 | $7700.00 | Window Closed / Lapsed |