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US3741512A Expired / Lapsed US ⏱️ 0.0 years remaining

Self-leveling dispenser

Assignee: AMF Inc
•
Filing: 1971-11-04
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Granted: 1973-06-26
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Expires: 1991-11-04
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Abstract

Abstract A tongs type self-leveling dispenser having a main compression spring has releasable torsion springs for each of its tongs to provide additional rates of resistance.

Inventors

  • 👤 F Olsson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 19:03
CPC Classifications
B; B65; B65G; B65G1/00; B65G1/02; B65G1/04; B65G1/06; B65G1/07

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 200 words
In a self-leveling dispenser comprising a base frame, a table frame positioned above said base frame, a plurality of tongs interconnecting said frames, and a main spring positioned between said frames for biasing said frames away from each other, the improvement of a releasable torsion spring positioned in the plane of one of said frames, one end of said torsion spring being connected to one of said tongs and the other end of said torsion spring being connected to said one frame, wherein said frames are generally rectangular in shape and there are four of said tongs interconnecting the respective sides of said frames, said main spring comprising a coiled spring acting directly against the central portion of said frames; and there are four of said torsion springs, one for each of said tongs; said torsion springs comprising coiled springs having integral radially extending arms formed at the opposite outer ends thereof, said torsion springs being positioned in the four corners of said one frame in a direction perpendicular to the plane of its respective tongs and having one of its arms fixed to the extremity of its respective tongs and its other arm releasably connected to said one frame.
Claim 2
Dependent Claim 200 words
In a self-leveling dispenser comprising a base frame, a table frame positioned above said base frame, a plurality of tongs interconnecting said frames, and a main spring positioned between said frames for biasing said frames away from each other, the improvement of a releasable torsion spring positioned in the plane of one of said frames, one end of said torsion spring being connected to one of said tongs and the other end of said torsion spring being connected to said one frame, wherein said frames are generally rectangular in shape and there are four of said tongs interconnecting the respective sides of said frames, said main spring comprising a coiled spring acting directly against the central portion of said frames; and there are four of said torsion springs, one for each of said tongs; said torsion springs comprising coiled springs having integral radially extending arms formed at the opposite outer ends thereof, said torsion springs being positioned in the four corners of said one frame in a direction perpendicular to the plane of its respective tongs and having one of its arms fixed to the extremity of its respective tongs and its other arm releasably connected to said one frame.

References Cited (Backward Citations)

US655598A Cited
US2170098A Cited
US2334922A Cited
US2357825A Cited
US2440096A Cited
US2645538A Cited
US3080066A Cited
US3198473A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-06-25 1976-12-25 1977-06-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-06-25 1980-12-25 1981-06-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-06-25 1984-12-25 1985-06-26 $7700.00 Window Closed / Lapsed

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