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US3844302A Expired / Lapsed US ⏱️ 0.0 years remaining

Collapsible umbrella

Assignee: KNIRPS INTERNATIONAL A GERMAN CORP GmbH
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Filing: 1972-03-15
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Granted: 1974-10-29
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Expires: 1992-03-15
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Abstract

Abstract A collapsible umbrella, of the type including frame-defining two section ribs in which the outer rib sections are slideable along the inner rib sections between extended and contracted positions and a cover overlying the frame and secured to the umbrella notch and the inner and outer ends of the outer ribs, is provided with a spreader member including a hub mounted on the notch and outwardly sprung radially projecting resilient fingers underlying the crown of the cover. Advantageously, the hub and fingers are integrally formed of a synthetic polymeric resin and the fingers are interconnected by pliable flexible connectors which may be integrally formed with the fingers and are positioned between the unbrella ribs and cover, the fingers interdigitating the ribs. Upon contracting the closed umbrella ribs the fingers resiliently maintain the cover crown in an extended position permitting its manual shaping against the influence of the resilient fingers into a compact collapsed condition.

Inventors

  • 👤 H Klein

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 17:42
CPC Classifications
A; A45; A45B; A45B19/00; A45B19/06

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 156 words
In a collapsible umbrella of the type having an elongatable shaft, a cover, elongatable ribs under the cover with the cover connected thereto at points at the periphery of the crown region and being free from the ribs for a distance inward of those points, the umbrella having a notch to which the shaft, ribs, and cover are connected, the improvement that comprises the inclusion of a spreader which comprises an integral plastic star including hub and fingers, portions of said spreader that are spaced out from the hub lying over the ribs and under the cover, the notch comprising an integral molded plastic member that includes a horizontal base disk annularly channeled at its circumferential edge, with a plurality of regularly spaced vertical recesses intersecting the annular channel, an upstanding tubular shank whose lower portion at least is externally threaded, with a pair of diametrically opposite vertical grooves in the outside face of said shank.
Claim 2
Dependent Claim 156 words
In a collapsible umbrella of the type having an elongatable shaft, a cover, elongatable ribs under the cover with the cover connected thereto at points at the periphery of the crown region and being free from the ribs for a distance inward of those points, the umbrella having a notch to which the shaft, ribs, and cover are connected, the improvement that comprises the inclusion of a spreader which comprises an integral plastic star including hub and fingers, portions of said spreader that are spaced out from the hub lying over the ribs and under the cover, the notch comprising an integral molded plastic member that includes a horizontal base disk annularly channeled at its circumferential edge, with a plurality of regularly spaced vertical recesses intersecting the annular channel, an upstanding tubular shank whose lower portion at least is externally threaded, with a pair of diametrically opposite vertical grooves in the outside face of said shank.

References Cited (Backward Citations)

US2258196A Cited
US2443772A Cited
US2475446A Cited
US2465140A Cited
US2864389A Cited
US3146785A Cited
US3177883A Cited
US3693643A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-10-28 1978-04-29 1978-10-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-10-28 1982-04-29 1982-10-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-10-28 1986-04-29 1986-10-29 $7700.00 Window Closed / Lapsed

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