Offset nose assembly with pin releasing assembly for fastener installation tools
AssigneeHuck Patents, Inc.
InventorsHendrik E. Rosier, Robert B. Wilcox
Life of this patent
Estimating the term…
Abstract
An offset pin puller apparatus usable with a fluid-operated actuator tool for exerting an axial pulling force on a grooved fastener pin projecting through a workpiece. Jaws mounted within the apparatus are held against axial motion while an associated collet moves axially to cam the jaws into clamped engagement with the fastener pin. The jaws are released from the fastener pin by abutment of a jaw release assembly with an inner wall of the apparatus. Such abutment effects an axial and radial separation of the jaws from the collet during a return stroke of the actuation tool.
Claims20
An apparatus for exerting an axial pulling force on a fastener pin having an axis and extending through a workpiece, said apparatus comprising:
- a housing;
- a drawbar positioned within said housing and having an axis and being connected to a fluid-operated actuator tool for relative motion along an actuator axis radially offset from the fastener pin;
- a collet carried by said drawbar for movement therewith;
- a segmented jaw structure having an axis radially offset from said drawbar axis and mounted on the collet for exerting a pulling force on the fastener pin, said collet having surface areas thereof aligned with said jaw structure so that axial motion of said collet is effective to radially move said jaw structure into clamped engagement on the fastener pin;
- and
- biasing means radially offset from said jaw structure axis for axially biasing said jaw structure relative to said collet and said housing so that during initial motion of said collet away from the workpiece said segmented jaw structure remains in a fixed position relative to said housing.
An apparatus for exerting an axial pulling force on a fastener pin extending through a workpiece, said apparatus comprising:
- a threaded drawbar connected to a piston portion of a fluid-operated actuator tool to define an actuator axis, a housing having a threaded section concentric with drawbar threads whereby said housing is connectable to a cylinder portion of said actuator tool, said housing having a hollow tubular nose having an outer end surface adapted to engage a surface of the workpiece, said nose being centered on a nose axis that is parallel to said actuator axis but offset therefrom, whereby said nose can be located in partially obstructed spaces, a collet carried on said drawbar and movable within said housing, said collet having an annular section located within said nose to define a space for receiving the fastener pin, a slideway extending through said collet on an axis that is parallel to said actuator axis and said nose axis, with said slideway being offset from said actuator axis and said nose axis, a jaw structure comprising a slide member slidably mounted in said slideway along a slideway axis, a biasing means biasing said slide member relative to said collet and said housing and into abutment with a wall of said housing, and a plurality of jaw segments located within said annular section of said collet, said jaw segments being operatively aligned with an internal surface of said annular section of said collet so that during initial motion of said collet away from the workpiece said basing means maintains said jaw structure in a motionless condition until said collet internal surface is in contact with said jaw segments, after which said jaw segments are forced into engagement with the fastener pin.
An offset nose assembly for pulling a fastener pin, comprising:
- a housing connectable to an actuator tool;
- said housing having a forward nose portion and a rearward connecting portion with said rearward connection portion being connectable to said actuator tool;
- a collet disposed within said housing for sliding movement between said nose portion and said connecting portion of said housing;
- a drawbar connectable to an actuator tool piston and movable along a drawbar axis;
- jaw means provided in said collet for gripping and pulling the fastener pin, said jaw means having an axis radially offset from said drawbar axis;
- and
- engagement means connected to said jaw means for engaging said housing and for limiting axial motion of said jaw means towards said forward nose portion of said housing during axial motion of said collet towards said forward nose portion of said housing.
Dependencies are inferred from the claim text.