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US4124198A Expired / Lapsed US ⏱️ 0.0 years remaining

Plastic fence

Assignee: Individual
•
Filing: 1977-10-03
•
Granted: 1978-11-07
•
Expires: 1997-10-03
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Abstract

Abstract A plastic fence comprising easily interconnectable post sections including a base post section usually anchored in the ground and one or more shorter post sections capable of providing a fence of any desired height. The post sections may removably interconnect by a screw connection or a bayonet-type connection. In one embodiment individual struts connect horizontally between spaced post sections while in another embodiment panel means connect therebetween.

Inventors

  • 👤 Woon-Tong Wong

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 12:14
CPC Classifications
E; E04; E04H; E04H17/00; E04H17/14; E04H17/16; E04H17/1602; E04H17/20; E04H17/21; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7005; Y10T403/7007

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 153 words
A plastic fence comprising; a plurality of like-diamter post sections each having means for interconnecting the post sections linearly in vertical array, in at least two parallel arranged groups with one secton of each group for anchoring the group in the ground, and means supported between the post section groups including key means extending toward each group, said post sections each having key slot means spacedly disposed therealong in at least two diametrically disposed sets for receiving the key means, said means for interconnecting comprising mating thread means of adjacent post sections including a female portion of one section and a reduced-diameter male portion of the other section, at least one of said key slot means of said one section being sufficiently proximate said female portion so that said male portion at least partially blocks the key slot means to prevent the key means associated therewith from disengaging from the key slot means.
Claim 2
Dependent Claim 153 words
A plastic fence comprising; a plurality of like-diamter post sections each having means for interconnecting the post sections linearly in vertical array, in at least two parallel arranged groups with one secton of each group for anchoring the group in the ground, and means supported between the post section groups including key means extending toward each group, said post sections each having key slot means spacedly disposed therealong in at least two diametrically disposed sets for receiving the key means, said means for interconnecting comprising mating thread means of adjacent post sections including a female portion of one section and a reduced-diameter male portion of the other section, at least one of said key slot means of said one section being sufficiently proximate said female portion so that said male portion at least partially blocks the key slot means to prevent the key means associated therewith from disengaging from the key slot means.
Claim 3
Dependent Claim 18 words
A plastic fence as set forth in claim 1 wherein the mating means means includes a bayonet-type connection.
Claim 4
Dependent Claim 43 words
A plastic fence as set forth in claim 1 wherein the group of post sections include a longer section for anchoring in the ground, all said post sections being of elongated, hollow, cylindrical shape therealong in two sets diametrically disposed to each other.
Claim 5
Dependent Claim 25 words
A plastic fence as set forth in claim 3 wherein each keyhole slot has different slot widths and each key means has an enlarged end.
Claim 6
Dependent Claim 31 words
A plastic fence as set forth in claim 4 wherein said means supported between the groups includes a plurality of elongated struts each having the key means formed at ends thereof.
Claim 7
Dependent Claim 20 words
A plastic fence as set forth in claim 1 wherein said means supported between the post sections includes panel means.
Claim 8
Dependent Claim 20 words
A plastic fence as set forth in claim 1 wherein said means supported between the post sections includes strut means.
Claim 9
Dependent Claim 35 words
A plastic fence as set forth in claim 1 wherein said key means has a cylindrical portion and a spherical end and said key slot means has a round slot contiguous with an elongated slot.
Claim 10
Dependent Claim 30 words
A plastic fence as set forth in claim 8 wherein said male portion only blocks said round slot, said spherical end being dimensioned to be locked in said elongated slot.
Claim 11
Dependent Claim 162 words
A plastic fence comprising; a plurality of like-dimaeter post sections each having means for interconnecting the post sections linearly in vertical array and in at least two separate spaced parallel-disposed groups with one section of each group for anchoring the group, and filler means supported between the post section groups including key means extending toward each group, said post sections each having key slots spacedly longitudinally disposed therealong in two sets diametrically disposed to each other, each slot for receiving a key of the key means, said means for interconnecting comprising mating thread means of adjacent post sections including a female portion of one section and a male portion of the other section and with one of said portions being sufficiently proximate at least one of said key slots when assembled to prevent disengagement of said key, at least the top post section of a group being open to provide a means for supporting an item on the top of the fence.
Claim 12
Dependent Claim 162 words
A plastic fence comprising; a plurality of like-dimaeter post sections each having means for interconnecting the post sections linearly in vertical array and in at least two separate spaced parallel-disposed groups with one section of each group for anchoring the group, and filler means supported between the post section groups including key means extending toward each group, said post sections each having key slots spacedly longitudinally disposed therealong in two sets diametrically disposed to each other, each slot for receiving a key of the key means, said means for interconnecting comprising mating thread means of adjacent post sections including a female portion of one section and a male portion of the other section and with one of said portions being sufficiently proximate at least one of said key slots when assembled to prevent disengagement of said key, at least the top post section of a group being open to provide a means for supporting an item on the top of the fence.
Claim 13
Dependent Claim 51 words
A plastic fence as set forth in claim 10 wherein said top post section has the male portion at the bottom thereof to mate with a female portion of the next lower post section, and the female portion at the top thereof providing a sufficiently wide opening to receive said item.
Claim 14
Dependent Claim 19 words
A plastic fence as set forth in claim 1 wherein said male portion blocks two diametrically disposed adjacent slots.

References Cited (Backward Citations)

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US1464305A Cited
US2439049A Cited
US3332182A Cited
US3471129A Cited
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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) 1981-11-06 1982-05-08 1982-11-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-11-06 1986-05-08 1986-11-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-11-06 1990-05-08 1990-11-07 $7700.00 Window Closed / Lapsed

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