US3918592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crane hoist attachment for the bed of a truck
Assignee: LODAR INDUSTRIES Inc
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Filing: 1974-11-11
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Granted: 1975-11-11
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Expires: 1994-11-11
Abstract
Abstract A flat compact supporting base for a building material handling crane attaches to the bed of a pick-up truck or the like with only four bolts and is readily removable from the truck. A crane boom in plural sections is connected to the bed centrally and is held in a use position by a pair of guy cables and an opposing chain with tightening means. A power hoist is mountable on the base and has a hoisting cable which is reeved over a sheave on the outermost boom section. In a modified form of the invention, the boom is shiftable on the base to a lowered non-use position for traveling.
Inventors
- 👤 Jim N Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:31
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/18; B66C23/36
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
133 words
A crane attachment for pick-up trucks and the like comprising a horizontal mounting base attachable directly to a truck bed, said base comprising fore and aft telescoping longitudinally adjustable base sections and fore and aft laterally adjustable telescoping outrigger bars on said base sections, said outrigger bars adapted for direct bolting to a truck bed, power hoist mounting bracket means on the forward base section, a crane boom, means to secure the base of the crane boom to said mounting base, guy cable means interconnecting said boom with the forward end portion of the mounting base, and opposing adjustable tension means interconnecting said boom with the forward end portion of the mounting base, whereby said boom is stabilized in an erected position of use, said boom having a sheave for a hoisting cable.
Claim 2
Dependent Claim
133 words
A crane attachment for pick-up trucks and the like comprising a horizontal mounting base attachable directly to a truck bed, said base comprising fore and aft telescoping longitudinally adjustable base sections and fore and aft laterally adjustable telescoping outrigger bars on said base sections, said outrigger bars adapted for direct bolting to a truck bed, power hoist mounting bracket means on the forward base section, a crane boom, means to secure the base of the crane boom to said mounting base, guy cable means interconnecting said boom with the forward end portion of the mounting base, and opposing adjustable tension means interconnecting said boom with the forward end portion of the mounting base, whereby said boom is stabilized in an erected position of use, said boom having a sheave for a hoisting cable.
Claim 3
Dependent Claim
24 words
The structure of claim 1, and said boom having plural telescoping sections, and means for pinning said boom sections in extended positions of use.
Claim 4
Dependent Claim
65 words
The structure of claim 1, and said guy cable means comprising a pair of downwardly diverging guy cables having upper ends secured to the boom mid-section and having lower ends secured to the outrigger bars of the forward base section, the opposing adjustable tension means consisting of a boomer chain and means to secure it to the crane boom and to the rearward base section.
Claim 5
Dependent Claim
59 words
The structure of claim 1, and the fore and aft base sections each having a pair of laterally spaced longitudinal bars and the bars of one base section adapted to telescope longitudinally with those of the other base section, an end transverse bar on each base section joining said longitudinal bars and adapted to telescope with said outrigger bars.
Claim 6
Dependent Claim
27 words
The structure of claim 4, and said outrigger bars each having a vertically extending anchor bolt receiving opening outside of said transverse bars of the base sections.
Claim 7
Dependent Claim
27 words
The structure of claim 5, and shackle means near the outer ends of the outrigger bars for connection with the lower ends of the guy cable means.
Claim 8
Dependent Claim
69 words
The structure of claim 4, and said means to secure the crane boom base to the mounting base comprising a transverse bar interconnecting the longitudinal bars of one base section and disposed near the longitudinal center of the assembled base, and apertured lug means on the last-named transverse bar adapted for pivotal attachment to the crane boom base section and disposed at the transverse center of the mounting base.
Claim 9
Dependent Claim
56 words
The structure of claim 2, and said boom being a three section boom, bracket means on opposite sides of the mid-section of said boom and adapted for attachment with said guy cable means, and additional bracket means on the lower side of the base section of said boom adapted for attachment with the adjustable tension means.
Claim 10
Dependent Claim
43 words
The structure of claim 1, and said power hoist mounting bracket means comprising a pair of upstanding bars secured to opposite sides of the forward base section forwardly of said means to secure said base of the crane boom to said mounting base.
Claim 11
Dependent Claim
45 words
The structure of claim 1, and said means to secure the base of the crane boom to said mounting base comprising a longitudinally slidable support for the base of the crane boom on said mounting base allowing the crane boom to be raised and lowered.
Claim 12
Dependent Claim
60 words
The structure of claim 10, and said mounting base including a central longitudinal bar on the forward section of the mounting base, a sleeve slidable on said bar for fore and aft movement thereon and adapted to be pinned in fore and aft positions on said bar, and means to attach the base of the crane boom to said sleeve.
Claim 13
Dependent Claim
33 words
The structure of claim 11, and said last-named means comprising a pair of spaced apertured lugs on the top of said sleeve adapted for pivotal attachment to the base of the crane boom.
Claim 14
Dependent Claim
51 words
The structure of claim 12, and a guide yoke for said boom secured rigidly to said mounting base and extending thereabove and having a guidance and stabilizing passage for the boom during movement of the boom with said sleeve between an upright position of use and a lowered position for travel.
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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |