US3131950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheeled dolly with tiltable axle for load leveling
Assignee: CRAIG SYSTEMS Inc
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Filing: 1963-02-07
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Granted: 1964-05-05
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Expires: 1983-02-07
Abstract
No abstract record available.
Inventors
- 👤 Jr John R Weaver
- 👤 Michel A Pierrat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:29
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/08; B62D53/0857; B62D53/0864
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A DOLLY FOR PORTABLY SUPPORTING A LOAD, COMPRISING, IN COMBINATION: AN AXLE ADAPTED TO MOUNT WHEELS ROTATABLY THEREON; A PAIR OF UNDERCARRIAGE ASSEMBLIES EACH COMPRISING A FRAME MEMBER, A YOKE PIVOTALLY MOUNTED ON SAID FRAME MEMBER, AND SPRING MEANS RESILIENTLY BIASING SAID YOKE AND SAID FRAME MEMBER FOR OPPOSITE ROTATION ABOUT SAID PIVOTAL MOUNTING, EACH OF SAID YOKES FORMED WITH AN AXLE HOUSING HAVING AN OPENING RECEIVING SAID AXLE THEREIN WITH CLEARANCE THEREBETWEEN; SAID AXLE FORMED WITH AT LEAST TWO PINS SPACED APART ALONG A LONGITUDINAL AXIS THEREOF AND EXTENDING TRANSVERSELY TO SAID AXIS IN GENERALLY HORIZONTAL DIRECTIONS; AT LEAST ONE RESILIENT BUSHING IN EACH AXLE HOUSING ROTATABLY SUPPORTING THE RESPECTIVE ONE OF SAID PINS FOR TILTING MOVEMENT OF SAID AXLE TRANSVERSELY OF SAID YOKE; AND A PAIR OF INDEPENDENTLYACTUABLE JACKING MEANS, EACH SUPPORTING ONE OF SAID FRAME MEMBERS FOR INDEPENDENT ADJUSTMENT OF THE ELEVATION OF SAID UNDERCARRIAGE ASSEMBLIES RELATIVE TO ONE ANOTHER, SAID JACKING MEANS BEING ADAPTED FOR ATTACHMENT IN TRANSVERSELY-SPACED RELATION TO A LOAD.
Claim 2
Dependent Claim
166 words
A DOLLY FOR PORTABLY SUPPORTING A LOAD, COMPRISING, IN COMBINATION: AN AXLE ADAPTED TO MOUNT WHEELS ROTATABLY THEREON; A PAIR OF UNDERCARRIAGE ASSEMBLIES EACH COMPRISING A FRAME MEMBER, A YOKE PIVOTALLY MOUNTED ON SAID FRAME MEMBER, AND SPRING MEANS RESILIENTLY BIASING SAID YOKE AND SAID FRAME MEMBER FOR OPPOSITE ROTATION ABOUT SAID PIVOTAL MOUNTING, EACH OF SAID YOKES FORMED WITH AN AXLE HOUSING HAVING AN OPENING RECEIVING SAID AXLE THEREIN WITH CLEARANCE THEREBETWEEN; SAID AXLE FORMED WITH AT LEAST TWO PINS SPACED APART ALONG A LONGITUDINAL AXIS THEREOF AND EXTENDING TRANSVERSELY TO SAID AXIS IN GENERALLY HORIZONTAL DIRECTIONS; AT LEAST ONE RESILIENT BUSHING IN EACH AXLE HOUSING ROTATABLY SUPPORTING THE RESPECTIVE ONE OF SAID PINS FOR TILTING MOVEMENT OF SAID AXLE TRANSVERSELY OF SAID YOKE; AND A PAIR OF INDEPENDENTLYACTUABLE JACKING MEANS, EACH SUPPORTING ONE OF SAID FRAME MEMBERS FOR INDEPENDENT ADJUSTMENT OF THE ELEVATION OF SAID UNDERCARRIAGE ASSEMBLIES RELATIVE TO ONE ANOTHER, SAID JACKING MEANS BEING ADAPTED FOR ATTACHMENT IN TRANSVERSELY-SPACED RELATION TO A LOAD.
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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |