US3667632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor crane
Assignee: Individual
•
Filing: 1970-01-16
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Granted: 1972-06-06
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Expires: 1990-01-16
Abstract
Abstract A floor crane having a wheeled base with an upright support pivoted to one end thereof, a jib pivoted to the upper end of the upright support and a fluid ram interconnecting the upright support and jib such that the upright support can be disposed parallel with the base with the jib and fluid ram substantially disposed therebetween.
Inventors
- 👤 Anthony Clifford Tidswell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:57
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/18; B66C23/36; B66C23/48
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
176 words
A floor crane comprising in combination: a. a rigid U-shaped base frame having a pair of non-movable limbs closed at one end, b. a further frame having an upper end and a lower end including a pair of sides with a cross-bar connecting said sides intermediate said ends, said lower end of said further frame being pivoted to the closed end of said U-shaped frame, d. a jib pivoted at said upper end of said further frame for pivotal lifting and lowering movement, e. a bracket secured to said jib and having an elongated slot cut therein, which slot is laterally extended at its end remote from the further frame, f. a fluid ram pivotally connected with said cross-bar of said further frame and connected with said jib to effect the pivotal lifting by a bolt on the ram end slidably engaged in said elongate slot, g. a further cross-bar connecting said limbs of said U-shaped frame, and h. a stay pivoted to each side of said further frame and releasably connected with said further cross-bar.
Claim 2
Dependent Claim
176 words
A floor crane comprising in combination: a. a rigid U-shaped base frame having a pair of non-movable limbs closed at one end, b. a further frame having an upper end and a lower end including a pair of sides with a cross-bar connecting said sides intermediate said ends, said lower end of said further frame being pivoted to the closed end of said U-shaped frame, d. a jib pivoted at said upper end of said further frame for pivotal lifting and lowering movement, e. a bracket secured to said jib and having an elongated slot cut therein, which slot is laterally extended at its end remote from the further frame, f. a fluid ram pivotally connected with said cross-bar of said further frame and connected with said jib to effect the pivotal lifting by a bolt on the ram end slidably engaged in said elongate slot, g. a further cross-bar connecting said limbs of said U-shaped frame, and h. a stay pivoted to each side of said further frame and releasably connected with said further cross-bar.
Claim 3
Dependent Claim
29 words
A floor crane according to claim 1 further provided with means to releasably secure said stays parallel with said further frame when the crane is in a folded 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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |