US3854507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fraction dispenser
Assignee: Toyo Seisakusho KK
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Filing: 1972-08-03
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Granted: 1974-12-17
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Expires: 1992-08-03
Abstract
Abstract A fraction dispenser for delivering predetermined quantities of a sample into receptacles. The invention comprises a group of receptacles individually supported in receptacle racks and a cam driven by a reversible motor, whereby the receptacles are shifted laterally and longitudinally so as to be in position to accept dispensing of the sample.
Inventors
- 👤 M Nishioka
- 👤 F Tomatsu
- 👤 R Fukami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:46
CPC Classifications
B; B67; B67C; B67C3/00; B67C3/02; B67C3/20; B65; B65B; B65B43/00; B65B43/42; B65B43/48; B67C7/00; B67C7/0006; B67C2007/006
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
178 words
A fraction dispenser comprising: 1. a plurality of receptacles supported in a plurality of racks; 2. means for dispensing samples into said receptacles as they are individually positioned under said dispensing means; and 3. means for shifting said plurality of racks in lateral and longitudinal directions to position said racks with respect to said dispensing means so that the receptacles of respective racks are sequentially individually positioned under said dispensing means, said shifting means comprising: a. driving means; b. a cam having projection means thereon and rotatably connected to said driving means; c. first means operative to be selectively engaged by said projection means and operative in response to rotation of said cam to shift said racks in the longitudinal direction; d. second means operative to be selectively Engaged by said projection means and operative in response to rotation of said cam to shift said racks in the lateral direction; and e. means associated with said cam, and driving, first and second means operative to control rotation of said cam to selectively engage said first and second means.
Claim 2
Dependent Claim
178 words
A fraction dispenser comprising: 1. a plurality of receptacles supported in a plurality of racks; 2. means for dispensing samples into said receptacles as they are individually positioned under said dispensing means; and 3. means for shifting said plurality of racks in lateral and longitudinal directions to position said racks with respect to said dispensing means so that the receptacles of respective racks are sequentially individually positioned under said dispensing means, said shifting means comprising: a. driving means; b. a cam having projection means thereon and rotatably connected to said driving means; c. first means operative to be selectively engaged by said projection means and operative in response to rotation of said cam to shift said racks in the longitudinal direction; d. second means operative to be selectively Engaged by said projection means and operative in response to rotation of said cam to shift said racks in the lateral direction; and e. means associated with said cam, and driving, first and second means operative to control rotation of said cam to selectively engage said first and second means.
Claim 3
Dependent Claim
17 words
means for dispensing samples into said receptacles as they are individually positioned under said dispensing means; and
Claim 4
Dependent Claim
17 words
means for dispensing samples into said receptacles as they are individually positioned under said dispensing means; and
Claim 5
Dependent Claim
26 words
The combination as claimed in claim 1 and wherein said cam is disc-shaped and said projection means comprise a plurality of pins connected to said cam.
Claim 6
Dependent Claim
144 words
means for shifting said plurality of racks in lateral and longitudinal directions to position said racks with respect to said dispensing means so that the receptacles of respective racks are sequentially individually positioned under said dispensing means, said shifting means comprising: a. driving means; b. a cam having projection means thereon and rotatably connected to said driving means; c. first means operative to be selectively engaged by said projection means and operative in response to rotation of said cam to shift said racks in the longitudinal direction; d. second means operative to be selectively Engaged by said projection means and operative in response to rotation of said cam to shift said racks in the lateral direction; and e. means associated with said cam, and driving, first and second means operative to control rotation of said cam to selectively engage said first and second means.
Claim 7
Dependent Claim
144 words
means for shifting said plurality of racks in lateral and longitudinal directions to position said racks with respect to said dispensing means so that the receptacles of respective racks are sequentially individually positioned under said dispensing means, said shifting means comprising: a. driving means; b. a cam having projection means thereon and rotatably connected to said driving means; c. first means operative to be selectively engaged by said projection means and operative in response to rotation of said cam to shift said racks in the longitudinal direction; d. second means operative to be selectively Engaged by said projection means and operative in response to rotation of said cam to shift said racks in the lateral direction; and e. means associated with said cam, and driving, first and second means operative to control rotation of said cam to selectively engage said first and second means.
Claim 8
Dependent Claim
108 words
The combination as claimed in claim 2 and wherein said first means comprises: a. a plurality of arms having slots operative to be engaged therein by said plurality of pins; b. at least one longitudinal feeder pawl associated with each of said plurality of arms; c. means connecting each of said longitudinal feeder pawls to said plurality of arms operative to move said longitudinal feeder pawls in the longitudinal direction in response to rotation of said cam; and d. guide means for moving said longitudinal feeder pawls in a vertical direction during at least a portion of the movement of said longitudinal feeder pawls in the longitudinal direction.
Claim 9
Dependent Claim
62 words
The combination according to claim 3 and wherein said guide means comprises a guide cam and a guide pin associated with each of said longitudinal feeder pawls, said guide cam having a bent portion, a horizontal portion and a slanted portion, said guide pin being connected to said connecting means and operative to pass over each of said cam portions in succession.
Claim 10
Dependent Claim
80 words
The combination according to claim 1 and wherein said second means comprises: a. a plurality of lateral feeder plates having a projecting side operative to be engaged by said plurality of pins; b. at least one lateral feeder pawl associated with each of said plurality of plates; and c. means connecting each of said lateral feeder pawls to said plurality of plates operative to move said lateral feeder pawls in a lateral direction in response to rotation of said cam.
Claim 11
Dependent Claim
75 words
The combination according to claim 4 and wherein said driving means comprises an electric motor and wherein said control means comprises a plurality of indentations in the surface of said disc-shaped cam, a plurality of switches having arms operative to be engaged by said indentations in said cam surface operative to actuate said switches responsive to rotation of said cam to thereby control rotation of said cam by energization and de-energization of said electric motor.
Claim 12
Dependent Claim
75 words
The combination according to claim 5 and wherein said driving means comprises an electric motor and wherein said control means comprises a plurality of indentations in the surface of said disc-shaped cam, a plurality of switches having arms operative to be engaged by said indentations in said cam surface operative to actuate said switches responsive to rotation of said cam to thereby control rotation of said cam by energization and de-energization of said electric motor.
Claim 13
Dependent Claim
60 words
The combination according to claim 1 and wherein said driving means comprises an electric motor having a shaft with a threaded portion thereon, said cam being freely carried on said shaft, and a spring washer supported on said shaft by a nut operative to exert pressure on said cam to rotate said cam in response to rotation of said shaft.
References Cited (Backward Citations)
US1397520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |