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US4379550A Expired / Lapsed US ⏱️ 0.0 years remaining

Ground supported playground device

Assignee: MULTIKUNST LEGEPLADSER IS
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Filing: 1979-07-09
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Granted: 1983-04-12
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Expires: 1999-07-09
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Abstract

Abstract A playground device mounted on a support such as a heavy coil spring, the lower end of which is fastened to a ground anchor which is a lightweight construction comprising a lowermost horizontal plate member adapted to be buried in a hole in the ground and a number of substantially vertical legs connecting this plate member with an upper mounting member adapted to be located in the ground surface level and stabilized in this location by said hole being refilled with earth, the mounting member serving to rigidly hold the lower end of the support of the playground device.

Inventors

  • 👤 Tom L. Petersen

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 05:06
CPC Classifications
A; A63; A63G; A63G13/00; A63G13/06; A63G13/08

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 239 words
A playground device of the type carried on resilient means for support which, in use, is likely to be subjected to tilting or displacement forces, said resilient means for support being secured to base anchoring means for firmly anchoring the lower end of the resilient means for support to the ground, characterized in that said base anchoring means comprise a lightweight mounting member for holding the lower end of the resilient means for support generally in the ground surface level and provided with mutually spaced, downwardly protecting leg members which, at their respective lower ends, are secured in lightweight plate means which are mounted or mountable in a generally horizontal, subterranean position, the mounting member is an inverted cup-shaped sheet metal member provided with holes in its depending edge flange for receiving fastening bolts for the upper ends of said leg members, and underneath the top portion of the cup member there is arranged a cross member, the opposite end portions of which are spaced from the cup top portion by distance members secured to the cup top portion by means of bolts additionally serving to hold the lower end of the resilient means for support against the cup member top side, the central portion of the cross member being spaced from the underside of the cup top portion so as to define a space in which is received the upper, inwardly bent end portions of the leg members.
Claim 2
Dependent Claim 239 words
A playground device of the type carried on resilient means for support which, in use, is likely to be subjected to tilting or displacement forces, said resilient means for support being secured to base anchoring means for firmly anchoring the lower end of the resilient means for support to the ground, characterized in that said base anchoring means comprise a lightweight mounting member for holding the lower end of the resilient means for support generally in the ground surface level and provided with mutually spaced, downwardly protecting leg members which, at their respective lower ends, are secured in lightweight plate means which are mounted or mountable in a generally horizontal, subterranean position, the mounting member is an inverted cup-shaped sheet metal member provided with holes in its depending edge flange for receiving fastening bolts for the upper ends of said leg members, and underneath the top portion of the cup member there is arranged a cross member, the opposite end portions of which are spaced from the cup top portion by distance members secured to the cup top portion by means of bolts additionally serving to hold the lower end of the resilient means for support against the cup member top side, the central portion of the cross member being spaced from the underside of the cup top portion so as to define a space in which is received the upper, inwardly bent end portions of the leg members.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-04-11 1986-10-11 1987-04-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-04-11 1990-10-11 1991-04-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-04-11 1994-10-11 1995-04-12 $7700.00 Window Closed / Lapsed

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