Tool for use in lifting pin-supported objects

Claim 2

A tool for use in lifting pin-supported objects comprising: A. an elongated body configured to be received beneath a pinsupported object to be lifted; B. linkage means including a rigid link supported by said body for axial motion along a path extended in parallelism with the longitudinal axis of symmetry of said body; and C. means responsive to axial motion imparted to said link for transmitting a lifting force to the object to be lifted.

Claim 3

The tool of claim 1 wherein said elongated body has a cross-sectional configuration including a pair of upstanding legs arranged in substantial parallelism, and said rigid link is disposed between the legs.

Claim 4

The tool of claim 2 wherein said means responsive to axial motion imparted to said link includes a pivotal link supported for oscillation about a first pivotal axis extending through the base portion of said pivotal link and in orthogonal relation with said longitudinal axis of symmetry, and a plate having an inverted U-shaped configuration pivotally coupled with said pivotal link and supported for oscillation about a second pivotal axis extended through the distal end portion of the pivotal link in parallelism with said first pivotal axis.

Claim 5

The tool of claim 3 wherein said linkage means further includes a cam surface of a wedge-shaped configuration formed at one end of said rigid link and a cam follower surface of a substantially arcuate configuration formed at the distal end of said pivotal link in juxtaposition with said cam surface, whereby selected axial motion imparted to said link causes said cam surface to engage said cam follower surface for imparting arcuate motion to said pivotal link.

Claim 6

A manually operable tool for use in lifting an electronic package supported above the surface of a circuit board by mutually spaced, vertically oriented pins seated in sockets formed in the board comprising: A. an elongated body of a substantially U-shaped cross-sectional configuration having a pair of laterally spaced vertically oriented walls extending in parallelism with the longitudinal axis of symmetry of said bOdy; B. an elongated rigid link of a substantially rectangular configuration supported for axial reciprocation along a path extended between the walls of said body, in parallelism therewith, said link being characterized by a thumb plate disposed in spaced relation with a first end of said body and a camming surface disposed at the opposite end thereof, adjacent to the second end of said body; C. a force applicator including a pivotal link pinned at its base end portion to said body and supported for oscillatory motion about an axis orthogonally related to the longitudinal axis of said body, a lifting plate, means including a lost-motion linkage coupling said lifting plate to the distal end portion of said pivotal link for oscillatory motion about the distal end thereof, and a cam-follower surface provided at the distal end of said pivotal link within the path of said rigid link for engaging said camming surface as selected axial motion is imparted to the rigid link whereby said plate is displaced into lifting engagement with said package; and D. a pair of oppositely curved arcuate members extended from said body at opposite sides of said axis of symmetry adapted to be received by a pair of mutually spaced human fingers.

Claim 7

A manually operable tool for use in lifting an electronic package supported above the surface of a circuit board by mutually spaced, vertically oriented pins seated in sockets formed in the board comprising: A. an elongated body of a substantially U-shaped cross-sectional configuration having a pair of laterally spaced vertically oriented walls extending in parallelism with the longitudinal axis of symmetry of said bOdy; B. an elongated rigid link of a substantially rectangular configuration supported for axial reciprocation along a path extended between the walls of said body, in parallelism therewith, said link being characterized by a thumb plate disposed in spaced relation with a first end of said body and a camming surface disposed at the opposite end thereof, adjacent to the second end of said body; C. a force applicator including a pivotal link pinned at its base end portion to said body and supported for oscillatory motion about an axis orthogonally related to the longitudinal axis of said body, a lifting plate, means including a lost-motion linkage coupling said lifting plate to the distal end portion of said pivotal link for oscillatory motion about the distal end thereof, and a cam-follower surface provided at the distal end of said pivotal link within the path of said rigid link for engaging said camming surface as selected axial motion is imparted to the rigid link whereby said plate is displaced into lifting engagement with said package; and D. a pair of oppositely curved arcuate members extended from said body at opposite sides of said axis of symmetry adapted to be received by a pair of mutually spaced human fingers.