Hoist and supplemental support system
OwnerAlfred L. Finleyinventor
Life of this patent
Estimating the term…
Abstract
The hoist comprises a base, first and second lower arms, first and second upper arms, and one or more blocking members. The first and second lower arms are pivotally coupled to the base. The first lower arm is pivotally coupled to the first upper arm. The second lower arm is pivotally coupled to the second upper arm. The lower arms and upper arms are adapted to move between an unraised condition to a raised condition. Each of the blocking members is adapted to move between a supporting position and a non-supporting position. Each blocking member, when in the supporting position, prevents the lower arms and upper arms from moving from the raised condition to the unraised condition.
Claims8
A hoist, comprising:
- a base, first and second lower arms, first and second upper arms, and first and second blocking members;
- the first blocking member being coupled to the first lower arm, the second blocking member being coupled to the second lower arm;
- the first and second lower arms each being pivotally coupled to the base;
- the first lower arm being pivotally coupled to the first upper arm;
- the second lower arm being pivotally coupled to the second upper arm;
- the lower arms and upper arms being adapted to move from an unraised condition to a raised condition;
- each of the one or more blocking members being adapted to move from a supporting position to a non-supporting position;
- the first and second lower arms each comprising a through opening, the first blocking member being slidingly arranged at least partially within the first lower arm through opening and the second blocking member being slidingly arranged at least partially within the second through opening;
- wherein, each blocking member, when in the supporting position, prevents the lower arms and upper arms from moving from the raised condition to the unraised condition.
Dependencies are inferred from the claim text.