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US 5,558,481 AGranted
Self-locking quick disengagement nut for clamps and the like
OwnerJoon Parkinventor
Life of this patent
Estimating the term…
Abstract
The self-locking quick disengagement nut has a bore therethrough which clears the threads of a thrust screw. On another axis, intersecting the clearance axis, a threaded bore has thrust screw-engaging threads. The nut is formed of two parts, lying substantially in opposite sides of the plane through the axes. The pivot pin lies closer to the threaded shaft axis than the major diameter of the threaded shaft so that the thrust screw urges the nut toward thread engagement without applying excessive bending to the thrust screw.
Claims21
An assembly comprising:
- first and second members;
- a thrust screw having first and second ends, said thrust screw having threads intermediate said ends;
- means for rotatably connecting said second end of said thrust screw to said second member;
- a nut block having a threaded portion, the major diameter of said threaded portion lying substantially on a cylinder having a threaded portion axis, and a non-threaded portion, said non-threaded portion being a portion of a cylindrical surface having a diameter larger than the major diameter of said thrust screw and having a clearance axis, said axes intersecting each other, said nut block being movably connected to said first member for engaging said thrust screw to permit said first and second members to be moved with respect to each other by rotation of said thrust screw, said nut block being configured to be movable from an engaged position where it is engaged on said thrust screw and a disengaged position where it is disengaged from said thrust screw;
- and
- a spring connected between said first member and said nut block to thrust said nut block toward its engaged position so that manual release deflects said spring and permits said nut block to disengage from said thrust screw to permit the free movement of said thrust screw with respect to said first member.
3 more elements
An assembly comprising:
- first and second members;
- a thrust screw having first and second ends, said thrust screw having threads intermediate said ends;
- means for rotatably connecting said thrust screw to said second member;
- a nut block formed of two parts each having a face, said nut block having a threaded portion, the major diameter of said threaded portion lying substantially on a cylinder having a threaded portion axis and a non-threaded portion, said non-threaded portion being a portion of a cylindrical surface having a diameter larger than the major diameter of said thrust screw and having a clearance axis, said axes intersecting each other, said faces lying substantially on said axes, said nut block being movably connected to said first member for engaging said thrust screw to permit said first and second members to be moved with respect to each other by rotation of said thrust screw, said nut block being configured to be movable from an engaged position where it is engaged on said thrust screw and a disengaged position where it is disengaged from said thrust screw;
- and
- a spring connected between said first member and said nut block to thrust said but block toward its engaged position so that manual release deflects said spring and permits said nut block to disengage from said thrust screw to permit the free movement of said thrust screw with respect to said first member.
3 more elements
An assembly comprising:
- first and second members;
- a thrust screw having first and second ends, said thrust screw having threads intermediate said ends;
- means for rotatably connecting said thrust screw to said second member;
- a nut block having a threaded portion, the major diameter of said threaded portion lying substantially on a cylinder having a threaded portion axis and a non-threaded portion, said non-threaded portion being a portion of a cylindrical surface having a diameter larger than the major diameter of said thrust screw and having a clearance axis, said axes intersecting each other, said nut block lying in an engaged position wherein said threaded portion engages said threaded screw and is in a disengaged position when said threaded portion is away from said thrust screw, said nut block having a pivot pin which defines the rotational axis for said nut block, when said nut block rotates from an engaged to a disengaged position, said pivot pin lying closer to said threaded shaft axis than the major diameter of said threaded shaft, said nut block engaging said thrust screw to permit said first and second members to be moved with respect to each other by rotation of said thrust screw, said nut block being configured to be movable from an engaged position where it is engaged on said thrust screw and a disengaged position where it is disengaged from said thrust screw;
- and
- a spring connected between said first member and said nut block to thrust said nut block toward its engaged position so that manual release deflects said spring and permits said nut block to disengage from said thrust screw to permit the free movement of said thrust screw with respect to said first member.
3 more elements
An assembly comprising:
- first and second members;
- a thrust screw having first and second ends, said thrust screw having threads intermediate said ends;
- means for rotatably connecting said thrust screw to said second member;
- a nut block having a threaded portion and a non-threaded portion and said nut block lies in an engaged position wherein said threaded portion engages on said thrust screw and is in a disengaged position when said threaded portion is away from said thrust screw, a pivot pin defining a rotational axis for said nut block rotating from an engaged to a disengaged position;
- said pivot pin lying closer to said threaded shaft axis than the major diameter of said threaded shaft, said nut block being for engaging said thrust screw to permit said first and second members to be moved with respect to each other by rotation of said thrust screw, said nut block being configured to be movable from and engaged position where it is engaged on said thrust screw and a disengaged position where it is disengaged from said thrust screw;
- and
- a spring connected between said first member and said nut block to thrust said nut block toward its engaged position so that manual release deflects said spring and permits said manually releasable means to disengage from said thrust screw to permit the free movement of said thrust screw with respect to said first member.
4 more elements
An assembly comprising:
- first and second members, said second member having a recess therein, with a facing surface in said recess;
- a thrust screw having first and second ends, said thrust screw having threads intermediate said ends;
- means for rotatably connecting said second end of said thrust screw to said second member;
- a nut block having a threaded portion, the major diameter of said threaded portion lying substantially on a cylinder having a threaded axis and a non-threaded portion, said non-threaded portion being a portion of a cylindrical surface having a diameter larger than the major diameter of said thrust screw and having a clearance axis, said axes intersecting each other, said nut assembly being positioned within said recess, said nut assembly having a face which is oriented so that when said faces lie together, said threaded axis of said nut assembly lies with the axis of said thrust screw, said nut block being for engaging said thrust screw to permit said first and second members to be moved with respect to each other by rotation of said thrust screw, said nut block being configured to be movable from an engaged position where it is engaged on said thrust screw and a disengaged position where it is disengaged from said thrust screw;
- and
- a spring connected between said first member and said nut block to thrust said nut block toward its engaged position so that manual release deflects said spring and permits said nut block to disengage from said thrust screw to permit the free movement of said thrust screw with respect to said first member.
3 more elements
A nut comprising:
- first and second nut parts, each of said nut parts being made of powdered metal sintered together, each of said nut parts having a joining face, said joining faces lying together when said nut parts are assembled into a nut, said nut having a threaded opening therethrough which defines a threaded opening axis and said nut having a clearance hole therethrough which defines a clearance hole axis, said axes intersecting each other within said nut and said axes lying substantially on said joined faces.
An assembly comprising:
- a threaded thrust screw having a first end and a second end, said thrust screw being threaded therebetween, said first end of said thrust screw being engaged with a first member;
- a second member, said second member having a recess therein, said recess having a thrust face, an opening through said recess including an opening through said thrust face;
- a nut in said recess, a thrust face on said nut, said nut having first and second axes therethrough, said first and second axes intersecting each other within said nut and lying at an acute angle with respect to each other, a threaded surface formed in said nut around said first axis, said threaded surface being configured to engage said thrust screw, a clearance hole through said nut formed as a substantially cylindrical surface around said second axis, said clearance hole being larger than the major diameter of said thrust screw, said thrust faces lying together when said threaded surface axis lies coincident with the axis of said thrust screw;
- and
- a spring engaged between said second member and said nut urging said thrust faces together.
2 more elements
Dependencies are inferred from the claim text.