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US4415098A Expired / Lapsed US ⏱️ 0.0 years remaining

Single bead dispenser

Assignee: Abbott Laboratories
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Filing: 1981-06-15
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Granted: 1983-11-15
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Expires: 2001-06-15
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Abstract

Abstract A bead dispenser for gravity feed dispensing beads one at a time from a plurality thereof. A main dispenser body includes a bead reservoir, a bead outlet and a cavity between the reservoir and the outlet for receiving a slidable, retractable plunger having an aperture alignable with the bead outlet. Opposing respective angled surfaces on the plunger and the dispenser main body are adapted to individually feed the beads into the plunger aperture for dispensing one at a time.

Inventors

  • 👤 Tommy B. Haas

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 15:46
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/04; B65D83/0409; B65D2583/00; B65D2583/04; B65D2583/0472; B65D2583/0477; B65D2583/0481

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 243 words
A bead dispenser for gravity feed dispensing one bead at a time from a plurality of beads, said bead dispenser comprising: a main body having a reservoir for said beads, an outlet below said reservoir, and a cavity intermediate the reservoir and outlet; a slidable plunger adapted for insertion into said main body cavity, including an aperture through said plunger alignable with the main body outlet upon slidable insertion of the plunger to a bead dispensing position; said reservoir including opposite interior surfaces angled inwardly convergent towards the cavity intermediate the reservoir and outlet, on both sides of the plunger with interior surfaces formed of different respective convergent angles; said plunger and angled feed chute extending upwardly away from said plunger aperture; a guide ramp on said main body projecting downwardly from the reservoir on a reservoir side opposite from said feed chute; said guide ramp including an angled ramp face extending upwardly away from said aperture and opposite from said feed chute with said plunger in the bead dispensing position; said angled feed chute and said opposing angled ramp face cooperating to individually feed said beads into said plunger aperture for dispensing; said plunger and guide ramp adapted to substantially restrict all but one bead of said plurality of beads from being positioned immediately above said plunger aperture with the plunger in the bead dispensing position; and said feed chute is grooved to substantially conform to the size of a single bead.
Claim 2
Dependent Claim 243 words
A bead dispenser for gravity feed dispensing one bead at a time from a plurality of beads, said bead dispenser comprising: a main body having a reservoir for said beads, an outlet below said reservoir, and a cavity intermediate the reservoir and outlet; a slidable plunger adapted for insertion into said main body cavity, including an aperture through said plunger alignable with the main body outlet upon slidable insertion of the plunger to a bead dispensing position; said reservoir including opposite interior surfaces angled inwardly convergent towards the cavity intermediate the reservoir and outlet, on both sides of the plunger with interior surfaces formed of different respective convergent angles; said plunger and angled feed chute extending upwardly away from said plunger aperture; a guide ramp on said main body projecting downwardly from the reservoir on a reservoir side opposite from said feed chute; said guide ramp including an angled ramp face extending upwardly away from said aperture and opposite from said feed chute with said plunger in the bead dispensing position; said angled feed chute and said opposing angled ramp face cooperating to individually feed said beads into said plunger aperture for dispensing; said plunger and guide ramp adapted to substantially restrict all but one bead of said plurality of beads from being positioned immediately above said plunger aperture with the plunger in the bead dispensing position; and said feed chute is grooved to substantially conform to the size of a single bead.
Claim 3
Dependent Claim 34 words
A bead dispenser according to claim 1, wherein said guide ramp includes a projecting edge portion immediately adjacent said plunger and extending over the plunger aperture with the plunger in the bead dispensing position.
Claim 4
Dependent Claim 26 words
A bead dispenser according to claim 1, including retraction means engageable with the plunger and main body for urging the plunger outwardly from the main body.
Claim 5
Dependent Claim 38 words
A bead dispenser according to claim 3, including a stop ledge on the plunger and an abuttment on said guide ramp, wherein said stop engages said abuttment to prevent complete retraction of said plunger from said main body.
Claim 6
Dependent Claim 25 words
A bead dispenser according to claim 4, including means for limiting slidable insertion of said plunger to position the plunger at the bead dispensing position.
Claim 7
Dependent Claim 36 words
A bead dispenser according to claim 1, wherein said main body outlet has a central axis offset from said reservoir, and said guide ramp includes a projecting edge portion extending substantially over said main body outlet.
Claim 8
Dependent Claim 35 words
A bead dispenser according to claim 1, wherein said angled feed chute and said angled ramp face each extend at an angle of about 35° with respect to the central axis of said plunger aperture.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-11-14 1987-05-16 1987-11-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-11-14 1991-05-16 1991-11-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-11-14 1995-05-16 1995-11-15 $7700.00 Window Closed / Lapsed

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