US4559981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled chute device
Assignee: Yamato Scale Co Ltd
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Filing: 1983-05-18
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Granted: 1985-12-24
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Expires: 2003-05-18
Abstract
Abstract A controlled chute device, including a ramp chute having an entrance gate at the upstream and an exit gate at the downstream, for letting groups of product fed from the entrance gate slip down along it by gravity and discharging them from the exit gate, wherein the both entrance and exit gates are controlled sophisticatedly so that two or more groups of product sequentially fed from the entrance gate can exist on the chute at the same time without fear of contact and intermixture of the adjoining groups, which device is especially suitable for use in a combination weighing machine.
Inventors
- 👤 Takashi Hirano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:58
CPC Classifications
G; G01; G01G; G01G13/00; G01G13/16; G01G13/18; G01G19/00; G01G19/387; G01G19/393
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
170 words
A controlled chute device, comprising a chute sloped to permit articles to slide down the chute by gravity, loading gate means for delivery of articles to the chute for passage down the chute, a loading gate control circuit adapted for generating successive loading gate control signals, said loading gate means being responsive to said successive control signals for the delivery of successive charges of articles to the chute for passage down the chute, inhibit means operable in response to a loading gate control signal for inhibiting generation of succeeding loading gate control signals by said loading gate control circuit, and release means operable in response to the passage of a charge of articles past a predetermined point in the chute for producing a release signal to stop operation of said inhibit means thereby to allow the next control signal to be generated by said loading gate control circuit for effecting delivery of the next charge of articles from said loading gate means to the chute for passage down the chute.
Claim 2
Dependent Claim
170 words
A controlled chute device, comprising a chute sloped to permit articles to slide down the chute by gravity, loading gate means for delivery of articles to the chute for passage down the chute, a loading gate control circuit adapted for generating successive loading gate control signals, said loading gate means being responsive to said successive control signals for the delivery of successive charges of articles to the chute for passage down the chute, inhibit means operable in response to a loading gate control signal for inhibiting generation of succeeding loading gate control signals by said loading gate control circuit, and release means operable in response to the passage of a charge of articles past a predetermined point in the chute for producing a release signal to stop operation of said inhibit means thereby to allow the next control signal to be generated by said loading gate control circuit for effecting delivery of the next charge of articles from said loading gate means to the chute for passage down the chute.
Claim 3
Dependent Claim
71 words
The device, in accordance with claim 1, further comprising unloading gate means at one end of the chute consisting its downstream end, and an unloading gate control circuit adapted for generating an unloading gate control signal when a charge of articles reaches the downstream end of the chute, said unloading gate means being responsive to said unloading gate control signal for the unloading of said charge of articles from the chute.
Claim 4
Dependent Claim
121 words
The device, in accordance with claim 1, adapted for having a series of containers move under one end of the chute constituting its downstream end for the delivery of successive charges of articles from the chute into said containers, said device further comprising allowing means adapted to generate an allowing signal as a container comes into position below the downstream end of the chute, said allowing signal being operable in conjunction with said release signal to stop operation of said inhibit means thereby to allow a loading gate control signal to be generated by said loading gate control circuit for effecting delivery of the next charge of articles from said loading gate means to the chute for passage down the chute.
Claim 5
Independent Claim
38 words
The device, in accordance with claims 1 or 3, wherein said release means comprises a timer device adapted to start in response to a loading gate control signal and to produce said release signal after a predetermined time.
Claim 6
Dependent Claim
54 words
The device, in accordance with claim 3, wherein said allowing means comprises a sensor responsive to a container coming into position below the downstream end of said chute for generating said allowing signal to control the delivery of a charge of articles from the chute to said container as it passes below the chute.
References Cited (Backward Citations)
US3168926A
Cited
US3618684A
Cited
GB1395322A
Cited
US3939928A
Cited
US3934625A
Cited
US4313507A
Cited
US4344492A
Cited
US4308928A
Cited
US4398614A
Cited
US4465150A
Cited
US4446938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-23 | 1989-06-24 | 1989-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-23 | 1993-06-24 | 1993-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-23 | 1997-06-24 | 1997-12-24 | $7700.00 | Window Closed / Lapsed |