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US 10,364,847 B2Granted
Mounting device
AssigneeFenner U.S., Inc.
InventorsMatthew Johnson, Nathan Mueller
Life of this patent
Estimating the term…
Abstract
A mounting device connects a rotary shaft to a rotatable machine element. The mounting device includes an inner sleeve for clamping onto the shaft and an outer sleeve for clamping onto the machine element. The inner and outer sleeves have cooperating tapered surfaces for tightening the mounting device. The cooperating tapered surfaces include striations. A nut connected with the inner and outer sleeves is rotatable to drive the inner sleeve relative to the outer sleeve in a first direction to tighten the inner sleeve onto the shaft and the outer sleeve onto the machine element.
Claims23
A device for coaxially mounting a machine element having a bore upon a shaft comprising:
- a nut having threads and a first connector;
- an outer sleeve for engaging the machine element, comprising:
- an external surface configured to cooperate with the bore of the machine element;
- a tapered internal surface;
- at least one axial slot extending longitudinally along the outer sleeve to permit radial expansion of the outer sleeve;
- a helical striation formed on the tapered internal surface wherein the helical striation comprises a plurality of convolutions having a lead angle;
- an inner sleeve for encircling the shaft, comprising:
- a tapered external surface corresponding in angle of taper to the tapered internal surface of the outer sleeve;
- at least one axial slot extending longitudinally along the inner sleeve to permit radial expansion of the inner sleeve;
- and
- a helical striation formed on the tapered external surface wherein the helical striation comprises a plurality of convolutions wherein the striations of the inner sleeve have a lead angle that is similar to the lead angle of the striations of the outer sleeve but in a negative direction;
- wherein one of the inner and outer sleeves comprises a threaded portion cooperable with the threaded portion of the nut and the other of the inner and outer sleeves comprises a second connector cooperable with the first connector to connect the other of the inner and outer sleeves with the nut to impede substantial axial displacement of the sleeve relative to the nut while allowing rotation of the nut relative to the other of the inner and outer sleeves;
- wherein rotating the nut in a first direction displaces the inner sleeve in a first direction relative to the outer sleeve, thereby causing the inner sleeve to contract against the shaft and the outer sleeve to expand against the bore of the machine element, and wherein rotating the nut in a second direction displaces the inner sleeve in a second direction relative to the outer sleeve, thereby loosening the inner sleeve from the shaft and the outer sleeve from the bore of the machine element.
10 more elements
A device for coaxially mounting a machine element having a bore upon a shaft comprising:
- a threaded tightening element;
- an outer sleeve for engaging the machine element wherein the outer sleeve is rotatable about an axis of rotation, comprising:
- an external surface configured to cooperate with the bore of the machine element;
- a tapered internal surface;
- at least one axial slot extending longitudinally along the outer sleeve to permit radial expansion of the outer sleeve;
- a plurality of striations formed on the tapered internal surface forming a plurality of convolutions having a lead angle, wherein the lead angle is the angle between one of the convolutions and the axis of rotation;
- an inner sleeve for encircling the shaft, comprising:
- a tapered external surface corresponding in angle of taper to the tapered internal surface of the outer sleeve;
- at least one axial slot or groove extending longitudinally along the inner sleeve to permit radial expansion of the inner sleeve;
- and
- a plurality of striations formed on the tapered external surface forming a plurality of convolutions wherein the striations of the inner sleeve have a lead angle that is transverse the lead angle of the striations of the outer sleeve;
- wherein one of the inner and outer sleeves comprises a threaded portion cooperable with the threaded tightening element;
- wherein rotating the threaded tightening element in a first direction displaces the inner sleeve in a first direction relative to the outer sleeve, thereby causing the inner sleeve to contract against the shaft and the outer sleeve to expand against the bore of the machine element.
10 more elements
Dependencies are inferred from the claim text.