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US 5,476,300 AGranted
Adjustable lifting device for sewer frame or the like
OwnerJohn P. Dodgeinventor
Life of this patent
Estimating the term…
Abstract
An adjustable lifting device, which includes a lifting frame, with at least one adjustable arm thereon and a lifting arm secured thereto is buttressed by sleeves and bars connecting each adjustable arm to the lifting arm.
Claims6
An adjustable lifting device for raising and transporting a heavy item comprising:
- a lifting frame;
- a first adjustable arm and a second adjustable arm being secured to the lifting frame;
- a lifting arm being secured to the lifting frame;
- a reinforcing means securing the lifting arm to the lifting frame;
- the first adjustable arm and the second adjustable arm each including an adjusting means for removably connecting the lifting device to the heavy item;
- the first adjustable arm having a fixed member and a movable member;
- the fixed member being secured to the frame;
- the movable member having a first arm end oppositely disposed from a second arm end thereof;
- the first arm end fitting a first type of a heavy item;
- the second arm end fitting a second type of a heavy item;
- the frame being a flat sheet;
- the first adjustable arm being substantially similar in construction to the second adjustable arm;
- the adjusting means including an arm securing means for releasably securing the movable member to the fixed member;
- the arm securing means providing for fixing and adjusting a length of the first adjustable arm;
- the first adjustable arm and the second adjustable arm being in combination with a third adjustable arm and a fourth adjustable arm;
- the first adjustable arm being substantially similar in construction to the third adjustable arm and the fourth adjustable arm;
- the first adjustable arm, the second adjustable arm, the third adjustable arm and the fourth adjustable arm being substantially equally and radially spaced apart;
- the lifting arm being substantially perpendicular to the frame;
- the reinforcing means including a first means for connecting the first adjustable arm to the lifting arm;
- the reinforcing means including a second means for connecting the second adjustable arm to the lifting arm;
- the reinforcing means including a third means for connecting the third adjustable arm to the lifting arm;
- and
- the reinforcing means including a fourth means for connecting the fourth adjustable arm to the lifting arm.
20 more elements
Dependencies are inferred from the claim text.