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US 6,663,343 B1Granted
Impeller mounting system and method
AssigneeSea Solar Power
InventorJ. Hilbert Anderson
Life of this patent
Estimating the term…
Abstract
An article, such as an impeller, is mounted for torque transmission by a shaft by positioning the article in contact with a threaded collar engaging tapered threads on the shaft and applying an axial force to the article to move and tighten the threaded collar on the tapered threads. The axial force is applied to the article by a clamping collar which contacts the article only in an area spaced from a central bore of the article in order to deflect a portion of the article defining the central bore radially inward toward the shaft. In one embodiment, two impellers are positioned back-to-back, with one impeller receiving an axial force spaced radially from a central bore of the impeller by an annular formation on the other impeller.
Claims28
A system for mounting at least one impeller on an impeller shaft without keys and keyways, comprising:
- an impeller shaft having tapered threads;
- a threaded collar positioned on the impeller shaft and defining a central bore having threads effective to engage the tapered threads on the impeller shaft;
- at least one impeller positioned on the impeller shaft and in contact with the threaded collar, the tapered threads of the impeller shaft having a first surface generally facing the impeller and a second surface generally facing away from the impeller, said first surface defining a first angle with the longitudinal axis of the impeller shaft and defining a second angle with a plane normal to said longitudinal axis, wherein said first angle is less than said second angle;
- and
- an arrangement axially forcing the impeller into contact with the threaded collar and axially forcing the threaded collar into torque transmitting contact with the tapered threads of the impeller shaft.
2 more elements
A system for mounting at least one impeller on an impeller shaft without keys and keyways, comprising:
- an impeller shaft having tapered threads;
- a threaded collar positioned on the impeller shaft and defining a central bore having threads effective to engage the tapered threads on the impeller shaft;
- at least one impeller positioned on the impeller shaft and in contact with the threaded collar;
- and
- an arrangement axially forcing the impeller into contact with the threaded collar and axially forcing the threaded collar into torque transmitting contact with the tapered threads of the impeller shaft,
- wherein the axial forcing arrangement comprises:
- a clamping collar positioned on the impeller shaft on a side of the impeller opposite the threaded collar;
- and
- a fastening arrangement secured to the impeller shaft, the fastening arrangement applying an axial force against the clamping collar in a direction toward the threaded collar so that the threaded collar slides up on the tapered threads of the impeller shaft.
6 more elements
A system for mounting at least one impeller on an impeller shaft without keys and keyways, comprising:
- an impeller shaft having tapered threads;
- a threaded collar positioned on the impeller shaft and defining a central bore having threads effective to engage the tapered threads on the impeller shaft;
- at least one impeller positioned on the impeller shaft and in contact with the threaded collar;
- and
- an arrangement axially forcing the impeller into contact with the threaded collar and axially forcing the threaded collar into torque transmitting contact with the tapered threads of the impeller shaft,
- wherein the at least one impeller comprises two impellers in contact with one another.
3 more elements
A system for mounting at least one impeller on an impeller shaft without keys and keyways, comprising:
- an impeller shaft having tapered threads;
- a threaded collar positioned on the impeller shaft and defining a central bore having threads effective to engage the tapered threads on the impeller shaft;
- at least one impeller positioned on the impeller shaft and in contact with the threaded collar;
- and
- an arrangement axially forcing the impeller into contact with the threaded collar and axially forcing the threaded collar into torque transmitting contact with the tapered threads of the impeller shaft,
- wherein the at least one impeller comprises first and second opposing impellers positioned adjacent to one another, each of the impellers having a central bore, and wherein the first impeller is positioned adjacent the clamping collar and has an annular formation extending axially into contact with the second impeller in an area of the second impeller spaced radially from the central bore of the second impeller such that the first impeller contacts the second impeller only along the annular formation.
3 more elements
A system for mounting at least one article on a drive shaft without employing key and keyway means, comprising:
- a drive shaft having tapered threads;
- a threaded collar positioned on the drive shaft and defining a central bore having threads effective to engage the tapered threads on the drive shaft;
- at least one article positioned on the drive shaft and in contact with the threaded collar at least one impeller positioned on the impeller shaft and in contact with the threaded collar, the tapered threads of the drive shaft having a first surface generally facing the article and a second surface generally facing away from the article, said first surface defining a first angle with the longitudinal axis of the drive shaft and defining a second angle with a plane normal to said longitudinal axis, wherein said first angle is less than said second angle;
- and
- an arrangement axially forcing the article into contact with the threaded collar and axially forcing the threaded collar into torque transmitting contact with the tapered threads of the drive shaft.
2 more elements
A system for mounting at least one article on a drive shaft without employing key and keyway means, comprising:
- a drive shaft having tapered threads;
- a threaded collar positioned on the drive shaft and defining a central bore having threads effective to engage the tapered threads on the drive shaft;
- at least one article positioned on the drive shaft and in contact with the threaded collar;
- an arrangement axially forcing the article into contact with the threaded collar and axially forcing the threaded collar into torque transmitting contact with the tapered threads of the drive shaft;
- and
- a clamping collar which has a central bore and which is positioned concentrically on the drive shaft, and fastening means for holding the clamping collar on the drive shaft, the clamping collar being positioned between the fastening means and the article so that the fastening means applies a generally axial force against the clamping collar.
3 more elements
A method of mounting at least one impeller on an impeller shaft to transmit torque from the impeller shaft to the impeller without keys and keyways comprising:
- providing tapered threads on the impeller shaft;
- positioning on the impeller shaft a threaded collar such that threads on the threaded collar engage the tapered threads of the impeller shaft;
- placing at least one impeller on the impeller shaft in contact with the threaded collar, the tapered threads of the impeller shaft having a first surface generally facing the impeller and a second surface generally facing away from the impeller, said first surface defining a first angle with the longitudinal axis of the impeller shaft and defining a second angle with a plane normal to said longitudinal axis, wherein said first angle is less than said second angle;
- and
- applying an axial force on the impeller in a direction toward the threaded collar to move and tighten the threaded collar on the tapered threads of the impeller shaft and enable torque to be transmitted from the impeller shaft to the threaded collar and the impeller.
2 more elements
A method of mounting at least one impeller on an impeller shaft to transmit torque from the impeller shaft to the impeller without keys and keyways comprising:
- providing tapered threads on the impeller shaft;
- positioning on the impeller shaft a threaded collar such that threads on the threaded collar engage the tapered threads of the impeller shaft;
- placing at least one impeller on the impeller shaft in contact with the threaded collar;
- and
- applying an axial force on the impeller in a direction toward the threaded collar to move and tighten the threaded collar on the tapered threads of the impeller shaft and enable torque to be transmitted from the impeller shaft to the threaded collar and the impeller,
- wherein the impeller has a central bore, and the axial force is applied to the impeller only in an area of the impeller spaced radially outward from the central bore to deflect radially toward the impeller shaft a portion of the impeller defining the central bore, and
- wherein the step of applying an axial force comprises positioning a clamping collar on the impeller shaft in contact with a side of the impeller opposite a side of the impeller contacting the threaded collar, and applying an axial force to the clamping collar.
4 more elements
A method of mounting at least one impeller on an impeller shaft to transmit torque from the impeller shaft to the impeller without keys and keyways comprising:
- providing tapered threads on the impeller shaft;
- positioning on the impeller shaft a threaded collar such that threads on the threaded collar engage the tapered threads of the impeller shaft;
- placing at least one impeller on the impeller shaft in contact with the threaded collar;
- and
- applying an axial force on the impeller in a direction toward the threaded collar to move and tighten the threaded collar on the tapered threads of the impeller shaft and enable torque to be transmitted from the impeller shaft to the threaded collar and the impeller,
- wherein the step of placing comprises placing two impellers on the impeller shaft, with the backs of the impellers in contact with one another.
3 more elements
A method of mounting at least one article on a drive shaft to transmit torque from the drive shaft to the article without keys and keyways comprising:
- providing tapered threads on the drive shaft;
- positioning on the drive shaft a threaded collar such that threads on the threaded collar engage the tapered threads of the drive shaft;
- placing at least one article on the drive shaft in contact with the threaded collar, the tapered threads of the drive shaft having a first surface generally facing the article and a second surface generally facing away from the article, said first surface defining a first angle with the longitudinal axis of the drive shaft and defining a second angle with a plane normal to said longitudinal axis, wherein said first angle is less than said second angle;
- and
- applying an axial force on the article in a direction toward the threaded collar to move and tighten the threaded collar on the tapered threads of the drive shaft and enable torque to be transmitted from the drive shaft to the threaded collar and the article.
2 more elements
A method of mounting at least one article on a drive shaft to transmit torque from the drive shaft to the article without keys and keyways comprising:
- providing tapered threads on the drive shaft;
- positioning on the drive shaft a threaded collar such that threads on the threaded collar engage the tapered threads of the drive shaft;
- placing at least one article on the drive shaft in contact with the threaded collar;
- and
- applying an axial force on the article in a direction toward the threaded collar to move and tighten the threaded collar on the tapered threads of the drive shaft and enable torque to be transmitted from the drive shaft to the threaded collar and the article,
- wherein the step of applying an axial force comprises positioning a clamping collar on the drive shaft in contact with a side of the article opposite a side of the article contacting the threaded collar, and applying an axial force to the clamping collar.
3 more elements
A method of mounting at least one article on a drive shaft to transmit torque from the drive shaft to the article without keys and keyways comprising:
- providing tapered threads on the drive shaft;
- positioning on the drive shaft a threaded collar such that threads on the threaded collar engage the tapered threads of the drive shaft;
- placing at least one article on the drive shaft in contact with the threaded collar;
- and
- applying an axial force on the article in a direction toward the threaded collar to move and tighten the threaded collar on the tapered threads of the drive shaft and enable torque to be transmitted from the drive shaft to the threaded collar and the article,
- wherein the step of placing comprises placing two articles on the drive shaft, with the articles in contact with one another.
3 more elements
Dependencies are inferred from the claim text.