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US3858835A Expired / Lapsed US ⏱️ 0.0 years remaining

Adjustable laboratory glassware funnel support

Assignee: Accurate Wirecraft Co
•
Filing: 1973-03-28
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Granted: 1975-01-07
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Expires: 1993-03-28
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Abstract

Abstract A wire basket-like stand has a vertically adjustable rack shelf with longitudinally displaced pairs of spaced parallel, vertically disposed, coaxial, round funnel openings with front slots on each funnel opening. The upper funnel openings aree sufficiently larger than the lower funnel openings to receive and embrace a tapered glassware device at two axially displaced circumferential positions. Thus, the openings provide the glassware device with not only horizontal support, but also vertical stability.

Inventors

  • 👤 Louis Baren

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 14:32
CPC Classifications
B; B01; B01L; B01L9/00

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 227 words
A funnel stand for laboratory glassware comprising a stand and shelf made of rods or wires fastened together, plastic neoprene rubber material covering all of said stand and shelf, said stand comprising spaced apart inverted U-shaped vertical end members with displaced horizontal stringers attached in matched pairs across the closed end of said U-shaped members, the ends of said shelf being shaped to be supported on oppositely disposed matched pairs of said stringers, said shelf ends and said pairs of stringers making contact in only one horizontal plane, said shelf comprising an elongated device with first openings distributed along the length of each side of the shelf in said one horizontal plane, a second opening coaxial with said first opening to form coaxial pairs of openings, said pairs of openings being spaced parallel and vertically disposed to form coaxial round funnel openings, each of said funnel openings having front slots, one of said openings of each coaxial pair being formed by a wire having a circular bight terminating in downwardly extending leg supports attached adjacent the front slot in the other of said coaxial pair of openings, and each pair of coaxial openings including an upper opening having a diameter which is sufficiently larger than the diameter of the lower paired openings to nestingly receive and embrace a tapered glassware device at two axially displaced circumferential positions.
Claim 2
Dependent Claim 227 words
A funnel stand for laboratory glassware comprising a stand and shelf made of rods or wires fastened together, plastic neoprene rubber material covering all of said stand and shelf, said stand comprising spaced apart inverted U-shaped vertical end members with displaced horizontal stringers attached in matched pairs across the closed end of said U-shaped members, the ends of said shelf being shaped to be supported on oppositely disposed matched pairs of said stringers, said shelf ends and said pairs of stringers making contact in only one horizontal plane, said shelf comprising an elongated device with first openings distributed along the length of each side of the shelf in said one horizontal plane, a second opening coaxial with said first opening to form coaxial pairs of openings, said pairs of openings being spaced parallel and vertically disposed to form coaxial round funnel openings, each of said funnel openings having front slots, one of said openings of each coaxial pair being formed by a wire having a circular bight terminating in downwardly extending leg supports attached adjacent the front slot in the other of said coaxial pair of openings, and each pair of coaxial openings including an upper opening having a diameter which is sufficiently larger than the diameter of the lower paired openings to nestingly receive and embrace a tapered glassware device at two axially displaced circumferential positions.
Claim 3
Dependent Claim 15 words
The funnel stand of claim 1 wherein said second opening is above said first openings,
Claim 4
Dependent Claim 15 words
The funnel stand of claim 1 wherein said second openings are below said first openings.

References Cited (Backward Citations)

US134738A Cited
US447605A Cited
US486762A Cited
US1406222A Cited
US1947932A Cited
US2278390A Cited
US2562497A Cited
US2680522A Cited
US2956686A Cited
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US3532318A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-01-06 1978-07-08 1979-01-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-01-06 1982-07-08 1983-01-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-01-06 1986-07-08 1987-01-07 $7700.00 Window Closed / Lapsed

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