Patent US1222913A successfully refreshed from Google Patents.
Patent US3830382A successfully refreshed from Google Patents.
US3830382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article handling apparatus with spring-assisted pantagraph raising mechanism
Assignee: Fujikoshi Ishigane KK
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Filing: 1972-11-02
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Granted: 1974-08-20
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Expires: 1992-11-02
Abstract
Abstract An apparatus for handling articles comprises a platform, a mechanism mounted on the platform for handling the articles, a foldable pantagraph for supporting the platform and means to operate the pantagraph for moving the platform in the vertical direction, said handling mechanism being supported preferably and rotatably by the platform. Further provided is a spring which is associated with the pantagraph operating means to assist the same while the pantagraph is being folded.
Inventors
- 👤 Y Nagamori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:53
CPC Classifications
B; B25; B25J; B25J19/00; B25J19/0008; B25J19/0016; B25J11/00; B25J9/00; B25J9/02; B25J9/04; B25J9/041; B25J9/10; B25J9/14
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
131 words
Apparatus for handling articles comprising: a platform, a handling mechanism mounted on said platform for handling said articles, a foldable pantagraph for supporting said platform, means to operate said pantagraph for moving said platform in the vertical direction, and a spring coupled with said pantagraph operating means to assist the pantagraph operating means while said pantagraph is being operated to raise said platform. said handling mechanism comprising a vertical shaft rotatably supported by said platform, a horizontal arm supported by said vertical shaft and raised and lowered only by said pantagraph, a wrist member mounted on the end of said horizontal arm, means for rotating said vertical shaft, means for rotating said horizontal arm about the axis thereof, means for reciprocating said horizontal arm and means for operating said wrist member.
Claim 2
Dependent Claim
131 words
Apparatus for handling articles comprising: a platform, a handling mechanism mounted on said platform for handling said articles, a foldable pantagraph for supporting said platform, means to operate said pantagraph for moving said platform in the vertical direction, and a spring coupled with said pantagraph operating means to assist the pantagraph operating means while said pantagraph is being operated to raise said platform. said handling mechanism comprising a vertical shaft rotatably supported by said platform, a horizontal arm supported by said vertical shaft and raised and lowered only by said pantagraph, a wrist member mounted on the end of said horizontal arm, means for rotating said vertical shaft, means for rotating said horizontal arm about the axis thereof, means for reciprocating said horizontal arm and means for operating said wrist member.
Claim 3
Dependent Claim
94 words
The apparatus according to claim 1 wherein said foldable pantagraph comprises two pairs of arms, the upper ends of the arms of each pair are pivotally connected to said platform, the lower end of one arm is pivotally connected to a base whereas the lower end of the other arm of the pair is pivotally connected to a slide member slidably mounted on said base and operatively connected to said pantagraph operating means, and the intermediate points of the arms of each pair are interconnected by a pin, thus forming a letter X configuration.
Claim 4
Dependent Claim
33 words
The apparatus according to claim 1 wherein said various means for operating said vertical shaft, said horizontal arm and said wrist member and said means for operating said pantagraph comprise discrete hydraulic actuators.
Claim 5
Dependent Claim
32 words
The apparatus according to claim 3 which further comprises means for controlling the flow of operating fluid to said respective hydraulic actuators, and electric control means for controlling said flow control means.
Claim 6
Dependent Claim
29 words
The apparatus according to claim 1 wherein said flow control means comprises a rotary valve operated by said vertical shaft for distributing the operating fluid among respective hydraulic actuators.
Claim 7
Dependent Claim
21 words
The apparatus according to claim 4 wherein said electric control means controls said hydraulic actuators in accordance with a prescribed program.
Claim 8
Dependent Claim
41 words
The apparatus according to claim 1 wherein said operating means comprises a hydraulically operated piston cylinder assembly and said spring is disposed in alignment with said piston cylinder assembly so that said spring is compressed by the stroke of the piston.
Claim 9
Dependent Claim
29 words
The apparatus according to claim 7 wherein said pantagraph is mounted on a base and said piston cylinder assembly is mounted on said base in parallel with said base.
Claim 10
Dependent Claim
33 words
The apparatus according to claim 7, wherein said spring is coupled to the piston of said piston cylinder assembly and is compressed by an outward stroke of the piston relative to the cylinder.
Claim 11
Dependent Claim
44 words
The apparatus according to claim 9 wherein said outward stroke of said piston relative to said cylinder operates to fold said pantagraph to lower said platform, the compressed spring assisting the inward stroke of said piston relative to said cylinder in raising the platform.
Claim 12
Dependent Claim
69 words
The apparatus according to claim 2 wherein said operating means comprises a hydraulically operated piston cylinder assembly coupled between the lower ends of at least one pair of said arms and said spring is disposed in alignment with said piston cylinder assembly so that said spring is compressed by the outward stroke of said piston relative to said cylinder during folding of said pantagraph during lowering of said platform.
Claim 13
Dependent Claim
38 words
The apparatus according to claim 7 wherein said spring assists the output of said piston cylinder assembly from a point of the maximum stroke of the piston relative to the cylinder to an intermediate point of said stroke.
Claim 14
Dependent Claim
42 words
The apparatus according to claim 12 wherein said point of the maximum stroke of the piston relative to said cylinder corresponds to the lowermost position of saiD platform, the spring exerting its largest assisting force at said lowermost position of said platform.
Claim 15
Dependent Claim
24 words
The apparatus according to claim 1 wherein said spring is a coil spring which is compressed when said pantagraph is in its lowermost position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |