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US4100709A Expired / Lapsed US ⏱️ 0.0 years remaining

Frame construction for a divider wall

Assignee: JAMI Inc
•
Filing: 1976-09-30
•
Granted: 1978-07-18
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Expires: 1996-09-30
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Abstract

Abstract A free-standing, prefabricated, knock down, readily assembled and disassembled, relocatable vertical wall or space divider. Such wall dividers are useful for partitioning buildings and/or office complexes. The wall is made up of a plurality of individualized and decorative flush panel units which are interchangeable and which are adapted to be readily inserted within quadrilateral openings delineated by a novel wall frame and locked into place by hidden spline members that are mounted in the wall frame for translatory movement. The wall frame is fabricated in a novel assemblage of unique components which can present either a metallic or wooden exterior finish surface. The configuration of the wall frame components provides for lateral walls to extend outwardly not only at modular locations but also from any other desired location by use of novel adapters. The panels may be removed, redecorated and replaced as needed. Shelving or other appurtenances are attachable to the hidden spline members. The entire wall panel and/or divider is readily relocatable when it is desired to re-arrange, enlarge or change a given floor space.

Inventors

  • 👤 Wayne W. Good

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 15:47
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/7407; E04B2/7416; E04B2/7422; E04B2/7427; E04B2/76; Y; Y10; Y10T; Y10T403/00; Y10T403/46; Y10T403/4602; Y10T403/55

Claims Analysis

Total Claims: 47
Claim 1
Independent Claim 183 words
A frame for a free-standing, vertical divider wall comprising: a plurality of structural components having identical generally C-shaped cross sections; each of which has a guideway having opposed flanges and extending longitudinally of said structural component at least in proximity to the ends thereof; at least two of said structural components being disposed as vertical support members; a connector plug received within at least the guideway of a vertically disposed support member; at least two of said structural components being horizontally disposed and vertically spaced as top and lower members; at least one anchor and at least one aligning block received within the guideway of a horizontally disposed member; said aligning block presents lug means which extend longitudinally outwardly of said horizontally disposed member; fastening means operative between said anchor and said connector plug to secure a corner connection between said horizontally and vertically disposed members in order to delineate a quadrilateral panel receiving locus; and, at least one notch recessed in said opposed flanges of said vertically disposed members, the lug means presented from said aligning block being received in said notch.
Claim 2
Dependent Claim 183 words
A frame for a free-standing, vertical divider wall comprising: a plurality of structural components having identical generally C-shaped cross sections; each of which has a guideway having opposed flanges and extending longitudinally of said structural component at least in proximity to the ends thereof; at least two of said structural components being disposed as vertical support members; a connector plug received within at least the guideway of a vertically disposed support member; at least two of said structural components being horizontally disposed and vertically spaced as top and lower members; at least one anchor and at least one aligning block received within the guideway of a horizontally disposed member; said aligning block presents lug means which extend longitudinally outwardly of said horizontally disposed member; fastening means operative between said anchor and said connector plug to secure a corner connection between said horizontally and vertically disposed members in order to delineate a quadrilateral panel receiving locus; and, at least one notch recessed in said opposed flanges of said vertically disposed members, the lug means presented from said aligning block being received in said notch.
Claim 3
Dependent Claim 34 words
A frame, as set forth in claim 1, further including connecting means being secured between the anchors in adjacent, longitudinally abutting structural components to effect a releasable joinder between said longitudinally abutting structural components.
Claim 4
Dependent Claim 40 words
A frame, as set forth in claim 2, in which said connecting means comprises: a nut and bolt combination cooperatively interengaging the anchors within said adjacent, longitudinally abutting structural components; and means to maintain said conjoined structural components in alignment.
Claim 5
Dependent Claim 63 words
A frame, as set forth in claim 3, in which the structural components are provided with lateral cavities in addition to said guideway, said cavities extending longitudinally of said components at least in proximity to the ends thereof; and in which the means to maintain alignment comprises a rigid member insertably received within the opposed cavities of the adjacent, longitudinally abutting structural components.
Claim 6
Dependent Claim 119 words
A frame, as set forth in claim 3, in which the C-shaped cross section of said structural member comprises: a web; parallel side walls extending outwardly of said web and terminating in opposed flanges, an inwardly directed rib extending longitudinally along the medial portion of each flange; a pair of stepped, inwardly directed, parallel ribs extending along said web; each stepped rib having a summit portion and a ledge portion; the summit portion on each said stepped rib being aligned with the corresponding opposed rib on the flanges of the C-shaped cross section; said ledge portions lying in lateral opposition, one with the other; said ribs each forming at least a portion of the four corners delineating said guideway.
Claim 7
Dependent Claim 77 words
A frame, as set forth in claim 5, in which said lateral cavities are of generally rectangular cross section; each said lateral cavity being presented between one of said side walls in said C-shaped cross section and the rib closest in proximity thereto; said cavities in successive structural members being opposedly in register when said structural members are longitudinally abutted; said means to maintain alignment comprising a rigid bar insertably received within said opposedly registered lateral cavities.
Claim 8
Dependent Claim 49 words
A frame, as set forth in claim 5, in which the anchor is of generally H-shaped configuration and has a central body portion and two pair of legs extending oppositely outwardly of said body portion; a bore provided through said body portion to receive said nut and bolt combination.
Claim 9
Dependent Claim 31 words
A frame, as set forth in claim 1, in which the connector plug presents a cover cap the configuration of which is congruent with the outer configuration of said structural component.
Claim 10
Dependent Claim 69 words
A frame, as set forth in claim 1, in which the connector plug has a body portion slidably received in said guideway; fastening means connecting said body portion to the web of the vertical support member in which said connector plug is received; an anchor plate attached to said body portion; a bolt receivable through said anchor and said aligning block to be threadably received in said anchor plate.
Claim 11
Dependent Claim 123 words
A frame, as set forth in claim 1, in which each said structural component has a web, parallel side walls extending outwardly of said web and terminating in opposed flanges; an inwardly directed rib extending longitudinally along the medial portion of each flange; a pair of stepped, inwardly directed, parallel ribs extending along said web; each stepped rib having a summit portion and a ledge portion; the summit portion on each said stepped rib being aligned with the correspondingly opposed rib on the flanges of the C-shaped cross section; said ledge portions lying in opposition, one to the other; each of said ribs being located adjacent a corner of said guideway; said connector plug having a body portion slidably received in said guideway.
Claim 12
Dependent Claim 99 words
A frame, as set forth in claim 1, in which the horizontally disposed lower member is secured to vertical support members upwardly of the surface on which said vertical support members rest; laterally spaced stanchions secured to, and extending downwardly from, said lower member; leveling means mounted in said stanchions and engageable with the surface on which said vertical support members rest; positioning lips presented from said stanchion; at least one cover plate; said cover plate having a hook portion releasably to engage the appropriate lips; and releasable locking means to secure said cover plate beneath said lower member.
Claim 13
Dependent Claim 65 words
A frame, as set forth in claim 11, in which a channel having a web and side flanges is secured to said lower member; the web of said channel engaging the web of said structural member with the side flanges of said channel extending downwardly from said lower member; said locking means connected between said cover plate and the corresponding side flanges in said channel.
Claim 14
Dependent Claim 30 words
A frame, as set forth in claim 12, in which said positioning lips are spaced downwardly of, and in substantial alignment with respect to, the side flanges of said channel.
Claim 15
Dependent Claim 55 words
A frame, as set forth in claim 13, in which said stanchion is of generally U-shaped configuration with a pair of legs extending upwardly from a base, each leg terminating in a mounting tab by which said stanchion is secured to said lower member; said leveling means and said positioning lips mounted on said base.
Claim 16
Dependent Claim 40 words
A frame, as set forth in claim 14, in which the legs of said stanchion are haunched to provide at least one passageway between the legs and at least one said cover plate in the direction of said cover plate.
Claim 17
Dependent Claim 233 words
A frame for a free-standing, vertical divider wall comprising: a plurality of structural components having identical generally C-shaped cross sections; each of which has a guideway having opposed flanges and extending longitudinally of said structural component at least in proximity to the ends thereof; at least two of said structural components being disposed as vertical support members; a connector plug received within at least the guideway of a vertically disposed support member; said connector plug presents a cap plate the outer configuration of which is congruent with the outer configuration of said structural component; at least two of said structural components being horizontally disposed and vertically spaced as top and lower members; at least one anchor and at least one aligning block received within the guideway of a horizontally disposed member; said aligning block presenting lug means which extend axially outwardly of said horizontally disposed member; notches being recessed in the opposed flanges of the vertically disposed support member to receive said lug means; said notches being located such that the cap plate will lie in the same plane as the web of the horizontal member when the connecting plug is received in the vertical member secured to said horizontal member; and, fastening means operative between said anchor and said connector plug to secure a corner connection between said horizontally and vertically disposed members in order to delineate a quadrilateral panel receiving locus.
Claim 18
Dependent Claim 233 words
A frame for a free-standing, vertical divider wall comprising: a plurality of structural components having identical generally C-shaped cross sections; each of which has a guideway having opposed flanges and extending longitudinally of said structural component at least in proximity to the ends thereof; at least two of said structural components being disposed as vertical support members; a connector plug received within at least the guideway of a vertically disposed support member; said connector plug presents a cap plate the outer configuration of which is congruent with the outer configuration of said structural component; at least two of said structural components being horizontally disposed and vertically spaced as top and lower members; at least one anchor and at least one aligning block received within the guideway of a horizontally disposed member; said aligning block presenting lug means which extend axially outwardly of said horizontally disposed member; notches being recessed in the opposed flanges of the vertically disposed support member to receive said lug means; said notches being located such that the cap plate will lie in the same plane as the web of the horizontal member when the connecting plug is received in the vertical member secured to said horizontal member; and, fastening means operative between said anchor and said connector plug to secure a corner connection between said horizontally and vertically disposed members in order to delineate a quadrilateral panel receiving locus.
Claim 19
Dependent Claim 331 words
A frame for a free-standing, vertical divider wall comprising: a plurality of structural components having identical generally C-shaped cross sections; each of which has a guideway extending longitudinally of said structural component at least in proximity to the ends thereof, a web, parallel side walls extending outwardly of said web and terminating in opposed flanges, an inwardly directed rib extending longitudinally along the medial portion of each flange, a pair of stepped, inwardly directed, parallel ribs extending along said web; each stepped rib having a summit portion and a ledge portion; the summit portion on each said stepped rib being aligned with the correspondingly opposed rib on the flanges of the C-shaped cross section; said ledge portions lying in opposition, one to the other; each of said ribs being located adjacent a corner of said guideway; at least two of said structural components being disposed as vertical support members; a connector plug received within at least the guideway of a vertically disposed support member; said connector plug having a body portion slidably received in said guideway; at least two of said structural components being horizontally disposed and vertically spaced as top and lower members; at least one anchor and at least one aligning block received within the guideway of a horizontally disposed member; said aligning block presenting lug means which extend longitudinally outwardly of said horizontally disposed member in which it is received; and said vertically disposed members carrying notches in the opposed flanges thereof to receive said lug means; and, fastening means operative between said anchor and said connector plug to secure a corner connection between said horizontally and vertically disposed members in order to delineate a quadrilateral panel receiving locus wherein a lateral cavity of generally rectangular cross section is presented between each side wall of said vertical member and the ribs in closest proximity thereto; an anchor plate and outrigger stabilizing plates being secured to said body portion; said stabilizing plates being slidably received within said lateral cavities.
Claim 20
Dependent Claim 331 words
A frame for a free-standing, vertical divider wall comprising: a plurality of structural components having identical generally C-shaped cross sections; each of which has a guideway extending longitudinally of said structural component at least in proximity to the ends thereof, a web, parallel side walls extending outwardly of said web and terminating in opposed flanges, an inwardly directed rib extending longitudinally along the medial portion of each flange, a pair of stepped, inwardly directed, parallel ribs extending along said web; each stepped rib having a summit portion and a ledge portion; the summit portion on each said stepped rib being aligned with the correspondingly opposed rib on the flanges of the C-shaped cross section; said ledge portions lying in opposition, one to the other; each of said ribs being located adjacent a corner of said guideway; at least two of said structural components being disposed as vertical support members; a connector plug received within at least the guideway of a vertically disposed support member; said connector plug having a body portion slidably received in said guideway; at least two of said structural components being horizontally disposed and vertically spaced as top and lower members; at least one anchor and at least one aligning block received within the guideway of a horizontally disposed member; said aligning block presenting lug means which extend longitudinally outwardly of said horizontally disposed member in which it is received; and said vertically disposed members carrying notches in the opposed flanges thereof to receive said lug means; and, fastening means operative between said anchor and said connector plug to secure a corner connection between said horizontally and vertically disposed members in order to delineate a quadrilateral panel receiving locus wherein a lateral cavity of generally rectangular cross section is presented between each side wall of said vertical member and the ribs in closest proximity thereto; an anchor plate and outrigger stabilizing plates being secured to said body portion; said stabilizing plates being slidably received within said lateral cavities.
Claim 21
Dependent Claim 32 words
A frame, as set forth in claim 17, in which the connector plug presents a cover cap the outer configuration of which is congruent with the outer configuration of said structural component.
Claim 22
Dependent Claim 58 words
A frame, as set forth in claim 18, in which the notches recessed in the opposed flanges of the vertically disposed support members are located such that the cap plate will lie in the same plane as the web of the horizontal member when the connecting plug is received in the vertical member secured to said horizontal member.
Claim 23
Dependent Claim 169 words
A frame for a free-standing, vertical divider wall comprising: a plurality of structural components having identical generally C-shaped cross sections; each of which has a guideway extending longitudinally of said structural component at least in proximity to the ends thereof; at least two of said structural components being disposed as vertical support members; at least two of said structural components being horizontally disposed and vertically spaced as top and lower members; an anchor and an aligning block received in the guideway of horizontally disposed members; and a connector plug received within at least the guideway of said vertically disposed member; fastening means operative between said anchor and said connector plug to secure a corner connection between said horizontally and vertically disposed members in order to delineate a quadrilateral panel receiving locus; a retaining flange being secured to said connector plug; a spline translatable within the plane of said frame; and, means on said spline engageable with said retaining flange to restrict the range through which said spline is translatable.
Claim 24
Dependent Claim 169 words
A frame for a free-standing, vertical divider wall comprising: a plurality of structural components having identical generally C-shaped cross sections; each of which has a guideway extending longitudinally of said structural component at least in proximity to the ends thereof; at least two of said structural components being disposed as vertical support members; at least two of said structural components being horizontally disposed and vertically spaced as top and lower members; an anchor and an aligning block received in the guideway of horizontally disposed members; and a connector plug received within at least the guideway of said vertically disposed member; fastening means operative between said anchor and said connector plug to secure a corner connection between said horizontally and vertically disposed members in order to delineate a quadrilateral panel receiving locus; a retaining flange being secured to said connector plug; a spline translatable within the plane of said frame; and, means on said spline engageable with said retaining flange to restrict the range through which said spline is translatable.
Claim 25
Dependent Claim 38 words
A frame, as set forth in claim 20, in which said spline has a channel-shaped cross section with a web portion; a release catch that is selectively engageable with said retaining flange being mounted on said web portion.
Claim 26
Dependent Claim 214 words
A frame for a free-standing, vertical divider wall comprising: a plurality of structural components having identical generally C-shaped cross sections; a web, parallel side walls extending outwardly of said web and terminating in opposed flanges; at least two of said structural components being disposed as vertical support members; at least two of said structural components being horizontally disposed and vertically spaced as top and lower members; a slide guide assembly engageable with, and movable along, said opposed flanges in said horizontally disposed top and lower members; wherein each slide guide assembly is separable along a median plane into laterally juxtaposed slide blocks; said slide blocks each having a lug with a bore therethrough; said bore being oriented transversely with respect to said median plane and the bores in the laterally juxtaposed slide blocks being registrable to receive a pivot pin; said pivot pin connecting said slide blocks into a slide guide assembly and said slide guide assembly to said spline; each said slide block also having a slideway embracingly to engage one of said opposed flanges; and a spline extending between said slide guide assemblies in the top and lower members; and, means to conjoin said top and lower members to said vertical support members in order to delineate a quadrilateral panel receiving locus.
Claim 27
Dependent Claim 214 words
A frame for a free-standing, vertical divider wall comprising: a plurality of structural components having identical generally C-shaped cross sections; a web, parallel side walls extending outwardly of said web and terminating in opposed flanges; at least two of said structural components being disposed as vertical support members; at least two of said structural components being horizontally disposed and vertically spaced as top and lower members; a slide guide assembly engageable with, and movable along, said opposed flanges in said horizontally disposed top and lower members; wherein each slide guide assembly is separable along a median plane into laterally juxtaposed slide blocks; said slide blocks each having a lug with a bore therethrough; said bore being oriented transversely with respect to said median plane and the bores in the laterally juxtaposed slide blocks being registrable to receive a pivot pin; said pivot pin connecting said slide blocks into a slide guide assembly and said slide guide assembly to said spline; each said slide block also having a slideway embracingly to engage one of said opposed flanges; and a spline extending between said slide guide assemblies in the top and lower members; and, means to conjoin said top and lower members to said vertical support members in order to delineate a quadrilateral panel receiving locus.
Claim 28
Dependent Claim 54 words
A frame, as set forth in claim 22, in which each said slide guide assembly comprises: a pair of juxtaposed slide blocks; each said slide block having a body portion provided with a slideway embracingly to engage one said opposed flanges; and means by which to attach said spline to said juxtaposed slide blocks.
Claim 29
Dependent Claim 201 words
A rectangular frame for a free-standing, vertical divider wall comprising: a plurality of structural components having identical generally C-shaped cross sections and having a guideway extending longitudinally of said structural component at least in proximity to the ends thereof, said guideway having opposed flanges; at least two of said structural components being disposed as vertical support members and two horizontal support members formed of said structural components and being horizontally disposed and vertically spaced as top and lower members, at least one of said top and lower members being formed of at least two abutting structural components; an anchor secured within said guideway proximal the end of each said horizontally disposed structural component effecting a releasable jonder between longitudinally abutting structural components and effecting a releasable joinder between horizontally and vertically disposed support members, said anchor having a central body portion; a bore longitudinally extending through said body portion; means connecting a pair of said anchors to provide said longitudinally abutting structural components; a connector plug received within said guideway proximal the end of each said vertically disposed structural member; and means fastening said anchor and said connector plug to secure a corner connection between said horizontally and vertically disposed member.
Claim 30
Dependent Claim 201 words
A rectangular frame for a free-standing, vertical divider wall comprising: a plurality of structural components having identical generally C-shaped cross sections and having a guideway extending longitudinally of said structural component at least in proximity to the ends thereof, said guideway having opposed flanges; at least two of said structural components being disposed as vertical support members and two horizontal support members formed of said structural components and being horizontally disposed and vertically spaced as top and lower members, at least one of said top and lower members being formed of at least two abutting structural components; an anchor secured within said guideway proximal the end of each said horizontally disposed structural component effecting a releasable jonder between longitudinally abutting structural components and effecting a releasable joinder between horizontally and vertically disposed support members, said anchor having a central body portion; a bore longitudinally extending through said body portion; means connecting a pair of said anchors to provide said longitudinally abutting structural components; a connector plug received within said guideway proximal the end of each said vertically disposed structural member; and means fastening said anchor and said connector plug to secure a corner connection between said horizontally and vertically disposed member.
Claim 31
Dependent Claim 91 words
A frame, as set forth in claim 24, further including an aligning block having a bore therethrough and carried in said guideway of each said horizontally disposed structural member adjacent said anchor block; lug means carried by said aligning block extending longitudinally outwardly of said horizontally disposed member; and, at least one notch recessed in said opposed flanges of said vertically disposed member to receive said lug means, wherein said means for fastening passes through said bores in said anchor and said aligning block and is received in said connector plug.
Claim 32
Dependent Claim 31 words
A frame, as set forth in claim 25, in which said connector plug presents a cover cap the configuration of which is congruent with the outer configuration of said structural component.
Claim 33
Dependent Claim 40 words
A frame, as set forth in claim 25, wherein said means for connecting comprises: a nut and bolt combination cooperatively interengaging said anchors within said adjacent, longitudinally abutting structural components; and means to maintain said conjoined structural components in alignment.
Claim 34
Dependent Claim 63 words
A frame, as set forth in claim 27, in which said structural components are provided with lateral cavities in addition to said guideway, said cavities extending longitudinally of said components at least in proximity to the ends thereof; and in which the means to maintain alignment comprises a rigid member insertably received within the opposed cavities of the adjacent, longitudinally abutting structural components.
Claim 35
Dependent Claim 105 words
A frame, as set forth in claim 28, in which the C-shaped cross section of said structural member further comprises: an inwardly directed rib extending longitudinally along the medial portion of each flange; a pair of stepped, inwardly directed, parallel ribs extending along said web; each stepped rib having a summit portion and a ledge portion; the summit portion on each said stepped rib being aligned with the corresponding opposed rib on the flanges of the C-shaped cross section; said ledge portions lying in lateral opposition, one with the other; said ribs each forming at least a portion of the four corners delineating said guideway.
Claim 36
Dependent Claim 77 words
A frame, as set forth in claim 29, in which said lateral cavities are of generally rectangular cross section; each said lateral cavity being presented between one of said side walls in said C-shaped cross section and the rib closest in proximity thereto; said cavities in successive structural members being opposedly in register when said structural members are longitudinally abutted; said means to maintain alignment comprising a rigid bar insertably received within said opposedly registered lateral cavities.
Claim 37
Dependent Claim 69 words
A frame, as set forth in claim 30, in which said connector plug has a body portion slidably received in said guideway; fastening means connecting said body portion to the web of the vertical support member in which said connector plug is received; an anchor plate attached to said body portion; a bolt receivable through said anchor and said aligning block to be threadably received in said anchor plate.
Claim 38
Dependent Claim 69 words
A frame, as set forth in claim 24, further including an aligning block having a bore therethrough and carried in said guideway of each said horizontally disposed member adjacent said anchor block; a retaining flange being secured to said connector plug; a spline translatable within the plane of said frame; means on said spline engageable with said retaining flange to restrict the range through which said spline is translatable.
Claim 39
Dependent Claim 39 words
A frame, as set forth in claim 32, in which said spline has a channel-shaped cross section with a web portion; and a release catch that is selectively engageable with said retaining flange being mounted on said web portion.
Claim 40
Dependent Claim 44 words
A frame, as set forth in claim 33, further including a slide guide assembly engageable with, and movable along, said opposed flanges in said horizontally disposed top and lower members; said spline extending between said slide guide assemblies in the top and lower members.
Claim 41
Dependent Claim 55 words
A frame, as set forth in claim 34, in which each said slide guide assembly comprises: a pair of juxtaposed slide blocks; each said slide block having a body portion provided with a slideway embracingly to engage one of said opposed flanges; and means by which to attach said spline to said juxtaposed slide blocks.
Claim 42
Dependent Claim 83 words
A frame, as set forth in claim 35, in which each slide guide assembly is separable along a median plane into laterally juxtaposed slide blocks; said slide blocks each having a lug with a bore therethrough; said bore being oriented transversely with respect to said median plane and the bores in the laterally juxtaposed slide blocks being registrable to receive a pivot pin; said pivot pin connecting said slide blocks into a slide guide assembly and said slide guide assembly to said spline.
Claim 43
Dependent Claim 99 words
A frame, as set forth in claim 24, in which the horizontally disposed lower member is secured to vertical support members upwardly of the surface on which said vertical support members rest; laterally spaced stanchions secured to, and extending downwardly from, said lower member; leveling means mounted in said stanchions and engageable with the surface on which said vertical support members rest; positioning lips presented from said stanchion; at least one cover plate; said cover plate having a hook portion releasably to engage the appropriate lips; and releasable locking means to secure said cover plate beneath said lower member.
Claim 44
Dependent Claim 65 words
A frame, as set forth in claim 37, in which a channel having a web and side flanges is secured to said lower member; the web of said channel engaging the web of said structural member with the side flanges of said channel extending downwardly from said lower member; said locking means connected between said cover plate and the corresponding side flanges in said channel.
Claim 45
Dependent Claim 30 words
A frame, as set forth in claim 38, in which said positioning lips are spaced downwardly of, and in substantial alignment with respect to, the side flanges of said channel.
Claim 46
Dependent Claim 55 words
A frame, as set forth in claim 39, in which said stanchion is of generally U-shaped configuration with a pair of legs extending upwardly from a base, each leg terminating in a mounting tab by which said stanchion is secured to said lower member; said leveling means and said positioning lips mounted on said base.
Claim 47
Dependent Claim 40 words
A frame, as set forth in claim 40, in which the legs of said stanchion are haunched to provide at least one passageway between the legs and at least one said cover plate in the direction of said cover plate.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-07-17 1982-01-16 1982-07-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-07-17 1986-01-16 1986-07-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-07-17 1990-01-16 1990-07-18 $7700.00 Window Closed / Lapsed

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