US4232310A — Protective window screen assembly

Claim 1

Independent Claim 139 words

An alarm screen assembly comprising: a screen mesh sheet formed primarily of nonconductive strands and also including a plurality of insulated electrically conductive security strands extending parallel to one another, said mesh sheet having a pair of opposite sides and said security strands extending largely perpendicular to and between said sides; a pair of electrically conductive cross wires extending along opposite sides of said mesh sheet and electrically connected to said security strands; and a spline extending along the border of said mesh sheet, said spline having upper and lower spine portions lying on opposite faces of said mesh sheet and over the locations where said cross wires are connected to said security strands, and said spline portions joined together through said mesh sheet, whereby to protect the electrical connections from moisture and aid in mounting the mesh sheet.

Claim 2

Dependent Claim 139 words

An alarm screen assembly comprising: a screen mesh sheet formed primarily of nonconductive strands and also including a plurality of insulated electrically conductive security strands extending parallel to one another, said mesh sheet having a pair of opposite sides and said security strands extending largely perpendicular to and between said sides; a pair of electrically conductive cross wires extending along opposite sides of said mesh sheet and electrically connected to said security strands; and a spline extending along the border of said mesh sheet, said spline having upper and lower spine portions lying on opposite faces of said mesh sheet and over the locations where said cross wires are connected to said security strands, and said spline portions joined together through said mesh sheet, whereby to protect the electrical connections from moisture and aid in mounting the mesh sheet.

Claim 3

Dependent Claim 81 words

The assembly described in claim 1 wherein: said spline has a flange located at the lower outer edge thereof; and including a frame having upper and lower frame halves, said lower frame half including walls forming a groove for receiving said lower spline portion, said groove having an outer side forming an undercut slot to receive said spline flange, and forming a stop surface at the inner side of said groove to abut the inner edge of said lower spline surface.

Claim 4

Dependent Claim 92 words

The assembly described in claim 1 including: a frame having upper and lower frame halves, each having inner, outer, and middle portions, and forming a recess between said inner and middle portions for holding said spline and with said mesh extending between the inner portions of the two frame halves; said outer portions of said frame halves forming a tongue and groove, and said middle portions being thick enough to abut each other when the tongue is fully inserted into the groove, whereby to avoid excessive clamping force on the security strands.

Claim 5

Dependent Claim 78 words

The assembly described in claim 1 wherein: said cross wires each lie on a surface of the mesh sheet at a location inside the extreme edge of the mesh sheet, and are electrically joined to said security strands at connection spots where the strand and cross wire cross, and each cross wire includes a single wire with a loop at the center and which is cut at locations between pairs of security strands and also along the loop.

Claim 6

Dependent Claim 100 words

In a screen assembly which includes upper and lower rectangular screen frame halves that can be detachably fastened together and which form a recess between them, the improvement of a screen mountable therein comprising: a flexible rectangular mesh; and a spline of flexible material extending along the periphery of said mesh and formed to lie in said frame recess, said spline having upper and lower flexible portions lying on opposite faces of said mesh and bonded together through said mesh, whereby to enable a replacement screen to be rolled up for shipment and installed by a homeowner or the like.

Claim 7

Dependent Claim 100 words

In a screen assembly which includes upper and lower rectangular screen frame halves that can be detachably fastened together and which form a recess between them, the improvement of a screen mountable therein comprising: a flexible rectangular mesh; and a spline of flexible material extending along the periphery of said mesh and formed to lie in said frame recess, said spline having upper and lower flexible portions lying on opposite faces of said mesh and bonded together through said mesh, whereby to enable a replacement screen to be rolled up for shipment and installed by a homeowner or the like.

Claim 8

Dependent Claim 71 words

The improvement described in claim 5 wherein said lower spline portion has an outwardly-extending flange at its periphery; and including a screen frame having upper and lower halves, said lower half having a recess for receiving said lower spline portion, said recess having an outer side with an undercut slot for receiving said spline flange, and an inner side having a stop surface for abutting the inner edge of the spline.

Claim 9

Dependent Claim 37 words

The improvement described in claim 6 wherein: the lower portion of said spline has a great enough width to form an interference fit with the inner and outer walls of said recess of said lower frame half.

Claim 10

Dependent Claim 140 words

An alarm screen assembly comprising: an open rectangular frame having upper and lower halves and having an outer side containing means for fastening the halves together, said frame forming an inner recess between said halves; a screen having a rectangular mesh with opposite sides, said mesh including a plurality of parallel security strands of insulated electrically conductive cores extending between opposite sides of the mesh, said screen having cross wires at opposite sides of the mesh which each lie on a surface of the mesh and are electrically joined to the conductive cores of said security strands, and having a spline of insulative material which encapsulates said security strands and cross wires at the locations where they are electrically joined; said spline lying trapped in said frame inner recess, with said mesh extending across the space within said open frame.

Claim 11

Dependent Claim 140 words

An alarm screen assembly comprising: an open rectangular frame having upper and lower halves and having an outer side containing means for fastening the halves together, said frame forming an inner recess between said halves; a screen having a rectangular mesh with opposite sides, said mesh including a plurality of parallel security strands of insulated electrically conductive cores extending between opposite sides of the mesh, said screen having cross wires at opposite sides of the mesh which each lie on a surface of the mesh and are electrically joined to the conductive cores of said security strands, and having a spline of insulative material which encapsulates said security strands and cross wires at the locations where they are electrically joined; said spline lying trapped in said frame inner recess, with said mesh extending across the space within said open frame.

Claim 12

Dependent Claim 73 words

The assembly described in claim 8 wherein: said frame forms an outer recess between said frame halves, and includes a largely U-shaped stiffener in said outer recess, said frame formed of plastic material and said stiffener formed of nonmagnetic metal material; and including a magnetic tamper switch device including a sensor coupled to one of said cross wires, and a mount surrounding the sensor and lying between the arms of the U-shaped stiffener.

Claim 13

Dependent Claim 75 words

The assembly described in claim 8 wherein: one of said frame halves includes a tongue and the other a groove at the outer side of the frame, and at least one of said frame halves has a groove at the inner side of the frame which faces the other frame half; and including a quantity of sealant lying in each of said grooves and extending between the frame halves, whereby to help keep out moisture.

Claim 14

Independent Claim 112 words

A method for constructing an alarm screen comprising: cutting a rectangular section from a mesh which includes a plurality of insulated security strands having conductive cores, so the security strands extend between opposite sides of the mesh; laying an insulated cross wire having conductive cores, along each edge of the mesh and electrically joining the cores of the cross wires to cores of the security strands; and laying upper and lower portions of an insulative spline over the opposite faces of said mesh along at least opposite sides thereof to lie over locations where said security strands and cross wires are electrically joined, and joining said spline portions together through said mesh.

Claim 15

Independent Claim 112 words

A method for constructing an alarm screen comprising: cutting a rectangular section from a mesh which includes a plurality of insulated security strands having conductive cores, so the security strands extend between opposite sides of the mesh; laying an insulated cross wire having conductive cores, along each edge of the mesh and electrically joining the cores of the cross wires to cores of the security strands; and laying upper and lower portions of an insulative spline over the opposite faces of said mesh along at least opposite sides thereof to lie over locations where said security strands and cross wires are electrically joined, and joining said spline portions together through said mesh.

Claim 16

Dependent Claim 40 words

The method described in claim 11 wherein: said spline comprises a block having a slot at the inside which extends only partially through the block, and said step of laying includes inserting the edge of said mesh in said slot.

Claim 17

Dependent Claim 150 words

An alarm screen assembly comprising: a rectangular mesh sheet formed of perpendicular mesh strands and a limited number of spaced parallel security strands each formed of a conductive core surrounded by insulation, said security strands extending between first and second opposite sides of said mesh sheet; and a pair of cross connector wires each formed of a conductive core surrounded by insulation, each cross wire lying on a face of said mesh sheet along a different one of said sides thereof and inside the edge of the mesh sheet, a plurality of locations on each cross wire spot connected to the end portion of a security strand by connection of the conductive cores of the security strand and cross wire, and said cross wire being cut at locations between some pairs of security strands, to form a sinuous conductive path through said security strands and cross wires along the mesh.

Claim 18

Dependent Claim 150 words

An alarm screen assembly comprising: a rectangular mesh sheet formed of perpendicular mesh strands and a limited number of spaced parallel security strands each formed of a conductive core surrounded by insulation, said security strands extending between first and second opposite sides of said mesh sheet; and a pair of cross connector wires each formed of a conductive core surrounded by insulation, each cross wire lying on a face of said mesh sheet along a different one of said sides thereof and inside the edge of the mesh sheet, a plurality of locations on each cross wire spot connected to the end portion of a security strand by connection of the conductive cores of the security strand and cross wire, and said cross wire being cut at locations between some pairs of security strands, to form a sinuous conductive path through said security strands and cross wires along the mesh.

Claim 19

Dependent Claim 34 words

The assembly described in claim 13 including: a spline lying around the border of said mesh sheet and encapsulating portions of the cross wires and security strands at locations where they are in contact.

Claim 20

Dependent Claim 43 words

The assembly described in claim 14 including: a frame which has a pair of members with a recess which can receive said spline, and with walls of said recess abutting portions of the spline which lie on opposite faces of the mesh sheet.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1983-11-04	1984-05-05	1984-11-04	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1987-11-04	1988-05-05	1988-11-04	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1991-11-04	1992-05-05	1992-11-04	$7700.00	Window Closed / Lapsed

Protective window screen assembly

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