A pulling head for use during installation of blind rivets, blind bolts, and lock bolts. The pulling head includes a faceted jaw holder disposed about a jaw assembly. The tool also includes an anvil sleeve that is rotatable about the jaw holder and jaw assembly and has at least one side opening size
A pulling head for use during installation of blind rivets, blind bolts, and lock bolts. The pulling head includes a faceted jaw holder disposed about a jaw assembly. The tool also includes an anvil sleeve that is rotatable about the jaw holder and jaw assembly and has at least one side opening sized to expose at least one of the facets of the jaw holder. The opening provides a smaller radial distance between the center of the pulling head and its outside edge to allow installation of blind rivets, blind bolts, and lock bolts where there is insufficient space for a full-diameter pulling head.
대표청구항▼
What is claimed is: 1. A pulling head for installing fasteners, the fasteners selected from blind rivets, blind bolts, and lock bolts, said pulling head comprising: jaws symmetrically disposed about a longitudinal axis and adapted for gripping the fasteners; a jaw holder positioned about said jaws
What is claimed is: 1. A pulling head for installing fasteners, the fasteners selected from blind rivets, blind bolts, and lock bolts, said pulling head comprising: jaws symmetrically disposed about a longitudinal axis and adapted for gripping the fasteners; a jaw holder positioned about said jaws along said axis, said jaw holder having proximal means for joining said jaw holder to a spindle of a pulling tool and distal means for pressing said jaws against a fastener shaft, said jaw holder also having an external surface oriented lengthwise in a direction substantially parallel to said longitudinal axis and comprising at least one facet oriented lengthwise in a direction substantially parallel to said longitudinal axis, said facet spaced from said longitudinal axis by an edge distance; and an anvil sleeve positioned about said jaw holder and reciprocally slideable longitudinally relative to said jaw holder and reciprocally rotatable about said axis, said anvil sleeve including a proximal end adapted to mate with a pulling tool, a distal end adapted to swage fastener collars about fastener shafts, and a side opening extending to said distal end and sized such that the minimum distance between said axis and an exterior surface of said pulling head is substantially equal to said edge distance of said jaw holder. 2. The pulling head of claim 1, wherein: said anvil sleeve is reciprocally rotatable about said jaw holder; and said side opening of said anvil sleeve is positionable adjacent one of said facets of said jaw holder such that the minimum edge distance of said anvil sleeve is substantially equal to the edge distance of said facet. 3. The pulling head of claim 1, wherein: said external surface of said jaw holder has a plurality of facets; and said anvil sleeve is positionable with said side opening exposing substantially all of any one of said facets. 4. The pulling head of claim 1, wherein said external surface of said jaw holder comprises six facets forming a hexagonal cross section. 5. The pulling head of claim 1, wherein: said facets and the side opening have substantially equal lengths in a direction parallel to said longitudinal axis of said pulling head. 6. The pulling head of claim 1, wherein: said external surface of said jaw holder comprises four facets forming a square cross section in a direction substantially perpendicular to said axis; the opening in said anvil sleeve is sized to expose two adjacent facets of said jaw holder; and said anvil sleeve and said jaw holder are both reciprocally rotatable about said jaws. 7. The pulling head of claim 6, wherein said anvil sleeve and said jaw holder are aligned with each other and rotatable as a unit about said jaws. 8. The pulling head of claim 1, wherein: said external surface of said jaw holder comprises eight facets forming an octagonal cross section in a direction substantially perpendicular to said axis; and said anvil sleeve comprises two side windows positionable to expose two facets of said jaw holder, said two facets oriented at right angles relative to each other. 9. The pulling head of claim 1, wherein said pulling head is operative to apply compressive and tensile forces up to about 10,000 pounds per square inch. 10. A pulling tool for installing fasteners, the fasteners selected from blind rivets, blind bolts, and lock bolts, said tool comprising: a pulling head, said pulling head comprising: jaws disposed about a longitudinal axis and adapted for gripping the fasteners; a jaw holder positioned about said jaws along said axis, said jaw holder having proximal means for joining said jaw holder to a spindle of a pulling tool, distal means for pressing said jaws about said fastener, and an external surface oriented parallel to a longitudinal axis of said pulling head and comprising at least one facet oriented lengthwise in a direction substantially parallel to said longitudinal axis, said facet spaced from said longitudinal axis by an edge distance; and an anvil sleeve positioned about said jaw holder and reciprocally slideable longitudinally relative to said jaw holder and reciprocally rotatable about said axis, said anvil sleeve including a proximal end adapted to mate with a pulling tool, a distal end adapted to swage fastener collars about fastener shafts, and a side opening having side edges and extending to said distal end and sized such that the minimum distance between said axis and an exterior surface of said pulling head is substantially equal to said edge distance of said jaw holder. 11. The tool of claim 10, wherein said means for joining said jaw holder is selected from spindles mateable with a proximal end of said jaw holder and spindle extensions mateable with a proximal end of said jaw holder. 12. The tool of claim 10, wherein said means for joining said anvil sleeve comprises a proximal end of said anvil sleeve mateable with a pushing mechanism of said tool. 13. The tool of claim 10, wherein said tool is operative to apply tensile and compressive forces up to about 10,000 pounds per square inch to a fastener. 14. The tool of claim 10, wherein said anvil sleeve is reciprocally rotatable about said jaw holder. 15. The tool of claim 10, wherein said anvil sleeve and said jaw holder are reciprocally rotatable about said jaws. 16. The tool of claim 10, wherein the side opening of said anvil sleeve is positionable to expose two of said facets of said jaw holder such that the minimum edge distance of said anvil sleeve is substantially equal to the edge distances of said facets. 17. The tool of claim 10, wherein: said external surface of said jaw holder comprises eight facets forming an octagonal cross section in a direction substantially perpendicular to said axis; said anvil sleeve includes two side windows positionable to expose two facets of said jaw holder, said two facets oriented at right angles relative to each other; and said anvil sleeve and said jaw holder are both reciprocally rotatable about said jaws. 18. A jaw holder for a pulling head for installing fasteners, the fasteners selected from blind rivets, blind bolts, and lock bolts, said jaw holder comprising: a multi-faceted external surface; a substantially cylindrical internal surface having a longitudinal axis at its radial center; means for joining said jaw holder to a spindle of a pulling tool; and means for forcing jaws positioned inside said jaw holder into gripping engagement with a fastener shaft. 19. The jaw holder of claim 18, wherein said exterior surface includes an alignment key extending outward from said surface and mateable with an alignment keyway of an anvil sleeve positioned about said jaw holder. 20. The jaw holder of claim 19, wherein said jaw holder has strength sufficient to withstand application of tensile forces up to about 10,000 pounds per square inch in a direction parallel to said axis. 21. An anvil sleeve comprising: a proximal end adapted to mate with a pulling tool; a distal end adapted to swage fastener collars about fastener shafts; and a partially cylindrical tubular wall including a plurality of side openings extending to said distal end. 22. The anvil sleeve of claim 21, wherein said wall has an internal surface and said internal surface includes an alignment keyway mateable with an alignment key of a jaw holder positioned inside said anvil sleeve. 23. The anvil sleeve of claim 21, wherein said anvil sleeve has strength sufficient to withstand compressive forces up to about 10,000 pounds per square inch in a direction parallel to a longitudinal axis of said partially cylindrical wall.
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이 특허에 인용된 특허 (4)
Johnston Harry R. (Coatesville PA), Adapter for plastic blind fastener tool.
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