Patent US3631940A successfully refreshed from Google Patents.
US3631940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load carriage with operator{3 s platform
Assignee: Eaton Corp
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Filing: 1970-03-16
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Granted: 1972-01-04
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Expires: 1990-03-16
Abstract
Abstract A load-lifting vehicle has a vertically moving load carriage on which is mounted an operator''s platform. When the operator''s platform is fully lowered, the load carriage may be in an elevated position from which it may move upwardly to carry the operator''s platform therewith, or may move downwardly freely of the operator''s platform to a fully lowered position.
Inventors
- 👤 Kenneth A Richins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:10
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/07
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
174 words
In a vehicle of the class described, a main frame including a vertical mast, an elevating load carriage, means mounting said load carriage for vertical movement along said mast, means for moving said carriage vertically on said mounting means relatively to said main frame, an operator''s platform, means mounting said platform for vertical movement on said carriage and also for movement with said carriage, a lost motion connection between said platform and carriage whereby said carriage may move freely upwardly of said platform in a vertical direction for a predetermined distance and then moves said platform vertically upwardly therewith, said lost motion connection including a hydraulic cylinder and piston located between said carriage and platform for permitting movement of said carriage relatively to said platform to move said piston in opposed directions into and out of said cylinder when the hydraulic fluid is allowed to flow freely into and from said piston and cylinder, and control means for inhibiting said flow of fluid whereupon said carriage and platform may be locked for integral movement.
Claim 2
Dependent Claim
174 words
In a vehicle of the class described, a main frame including a vertical mast, an elevating load carriage, means mounting said load carriage for vertical movement along said mast, means for moving said carriage vertically on said mounting means relatively to said main frame, an operator''s platform, means mounting said platform for vertical movement on said carriage and also for movement with said carriage, a lost motion connection between said platform and carriage whereby said carriage may move freely upwardly of said platform in a vertical direction for a predetermined distance and then moves said platform vertically upwardly therewith, said lost motion connection including a hydraulic cylinder and piston located between said carriage and platform for permitting movement of said carriage relatively to said platform to move said piston in opposed directions into and out of said cylinder when the hydraulic fluid is allowed to flow freely into and from said piston and cylinder, and control means for inhibiting said flow of fluid whereupon said carriage and platform may be locked for integral movement.
Claim 3
Dependent Claim
29 words
In the combination of claim 1, the feature that said control means also directs fluid under pressure into said cylinder whereby to move said platform relatively to said carriage.
Claim 4
Dependent Claim
127 words
In a vehicle of the class described, a main frame including a vertical mast, an elevatinG load carriage, means mounting said load carriage for vertical movement along said mast, means for moving said carriage vertically on said mounting means relatively to said main frame, an operator''s platform, means mounting said platform for vertical movement on said carriage and also for movement with said carriage, a lost motion connection between said platform and carriage whereby said carriage may move freely upwardly of said platform in a vertical direction for a predetermined distance and then moves said platform vertically upwardly therewith, and a hydraulic ram between said carriage and platform for controlling the position of said platform relatively to said carriage independently of said lost motion means of connection.
Claim 5
Dependent Claim
127 words
In a vehicle of the class described, a main frame including a vertical mast, an elevatinG load carriage, means mounting said load carriage for vertical movement along said mast, means for moving said carriage vertically on said mounting means relatively to said main frame, an operator''s platform, means mounting said platform for vertical movement on said carriage and also for movement with said carriage, a lost motion connection between said platform and carriage whereby said carriage may move freely upwardly of said platform in a vertical direction for a predetermined distance and then moves said platform vertically upwardly therewith, and a hydraulic ram between said carriage and platform for controlling the position of said platform relatively to said carriage independently of said lost motion means of connection.
Claim 6
Dependent Claim
196 words
In a vehicle of the class described, a main frame including a vertical mast, an elevating load carriage, means mounting said load carriage for vertical movement along said mast, means for moving said carriage vertically on said mounting means relatively to said main frame, an operator''s platform, means mounting said platform for vertical movement on said carriage and also for movement with said carriage, a lost motion connection between said platform and carriage whereby said carriage may move freely upwardly of said platform in a vertical direction for a predetermined distance and then moves said platform vertically upwardly therewith, said lost motion connection comprising abutment means on said carriage adapted to engage abutment means on said platform during upward movement of said carriage, said abutment means on said carriage dropping from contact with the abutment means on said platform to permit said carriage to move downwardly relatively to said platform when said platform reaches a predetermined position with respect to said main frame during downward travel of the carriage and platform, and a hydraulic ram between said carriage and platform for controlling the position of said platform relatively to said carriage independently of said abutment means.
Claim 7
Dependent Claim
196 words
In a vehicle of the class described, a main frame including a vertical mast, an elevating load carriage, means mounting said load carriage for vertical movement along said mast, means for moving said carriage vertically on said mounting means relatively to said main frame, an operator''s platform, means mounting said platform for vertical movement on said carriage and also for movement with said carriage, a lost motion connection between said platform and carriage whereby said carriage may move freely upwardly of said platform in a vertical direction for a predetermined distance and then moves said platform vertically upwardly therewith, said lost motion connection comprising abutment means on said carriage adapted to engage abutment means on said platform during upward movement of said carriage, said abutment means on said carriage dropping from contact with the abutment means on said platform to permit said carriage to move downwardly relatively to said platform when said platform reaches a predetermined position with respect to said main frame during downward travel of the carriage and platform, and a hydraulic ram between said carriage and platform for controlling the position of said platform relatively to said carriage independently of said abutment means.
Claim 8
Dependent Claim
216 words
In a vehicle of the class described, a main frame including a vertical mast, an elevating load carriage, means mounting said load carriage for vertical movement along said mast, means for moving said carriage vertically on said mounting means relatively to said main frame, an operator''s platform, means mounting said platform for vertical movement on said carriage and also for movement with said carriage, a lost motion connection between said platform and carriage whereby said carriage may move freely upwardly of said platform in a vertical direction for a predetermined distance and then moves said platform vertically upwardly therewith, said lost motion connection comprising abutment means on said carriage adapted to engage abutment means on said platform during upward movement of said carriage, said abutment means on said carriage dropping from contact with the abutment means on said platform to permit said carriage to move downwardly relatively to said platform when said platform reaches a predetermined position with respect to said main frame during downward travel of the carriage and platform, said abutment means being effective to lift said platform with said carriage after engaging said abutment means on the platform, and a hydraulic ram between said carriage and platform for controlling the position of said platform relatively to said carriage independently of said abutment means.
Claim 9
Dependent Claim
216 words
In a vehicle of the class described, a main frame including a vertical mast, an elevating load carriage, means mounting said load carriage for vertical movement along said mast, means for moving said carriage vertically on said mounting means relatively to said main frame, an operator''s platform, means mounting said platform for vertical movement on said carriage and also for movement with said carriage, a lost motion connection between said platform and carriage whereby said carriage may move freely upwardly of said platform in a vertical direction for a predetermined distance and then moves said platform vertically upwardly therewith, said lost motion connection comprising abutment means on said carriage adapted to engage abutment means on said platform during upward movement of said carriage, said abutment means on said carriage dropping from contact with the abutment means on said platform to permit said carriage to move downwardly relatively to said platform when said platform reaches a predetermined position with respect to said main frame during downward travel of the carriage and platform, said abutment means being effective to lift said platform with said carriage after engaging said abutment means on the platform, and a hydraulic ram between said carriage and platform for controlling the position of said platform relatively to said carriage independently of said abutment means.
Claim 10
Dependent Claim
120 words
In a vehicle of the class described, a main frame including a vertical mast, an elevating load carriage, means mounting said load carriage for vertical movement along said mast, means for moving said carriage vertically on said mounting means relatively to said main frame, an operator''s platform, means mounting said platform for vertical movement on said carriage and also for movement with said carriage, a lost motion connection between said plaTform and carriage whereby said carriage may move freely upwardly of said platform in a vertical direction for a predetermined distance and then moves said platform vertically upwardly therewith, and means for controlling the position of said platform relatively to said carriage independently of said lost motion means of connection.
Claim 11
Dependent Claim
120 words
In a vehicle of the class described, a main frame including a vertical mast, an elevating load carriage, means mounting said load carriage for vertical movement along said mast, means for moving said carriage vertically on said mounting means relatively to said main frame, an operator''s platform, means mounting said platform for vertical movement on said carriage and also for movement with said carriage, a lost motion connection between said plaTform and carriage whereby said carriage may move freely upwardly of said platform in a vertical direction for a predetermined distance and then moves said platform vertically upwardly therewith, and means for controlling the position of said platform relatively to said carriage independently of said lost motion means of connection.
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) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |