A deltoid linkage is a four bar mechanism which consists of two pairs of equal and adjacent links. It is a grashof linkage for which the sum of the lengths of the shortest link and the longest link is equal

## Grashof’s Law

Consider this four bar mechanism: s = length of the shortest link l = length of the largest link p and q = lengths of the other two links By Grashof law, for at least one link to be capable

## Crank Rocker Mechanism

Crank Rocker Mechanism is a four bar linkage. In this linkage, the shortest link rotates fully while the other link pivoted to the fixed link oscillates. It is a Grashof linkage for which the sum of the lengths of the

## Difference between Double Rocker Mechanism and Triple Rocker Mechanism

Double rocker mechanism is a grashof linkage for which the sum of the lengths of the shortest link and the largest link is less than the sum of the lengths of the other two links. On the other hand, Triple

## Triple Rocker Mechanism

In Triple rocker mechanism, one link is fixed while the other three oscillates. It is a non grashof linkage for which the sum of the lengths of the shortest link and the longest link is greater than the sum of

## Double Rocker Mechanism

Double Rocker Mechanism is a four-bar mechanism. In this linkage, both the links pivoted to the fixed link oscillate. It is a Grashof linkage for which the sum of the lengths of the shortest link and the largest link is