US3903748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for movement of a cylindrical body in axial direction
Assignee: Elkem ASA
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Filing: 1973-09-13
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Granted: 1975-09-09
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Expires: 1993-09-13
Abstract
Abstract An apparatus for continuous movement of a cylindrical body in the direction of its axis is disclosed. The apparatus comprises a series of rollers, helically arranged, which are in pressurized contact with the cylindrical body, the pressure being supplied by a resilient member. Rotation of the resilient member by means of an outer rigid shell causes rotation of the rollers which in turn causes movement of the cylinder.
Inventors
- 👤 Harald Krogsrud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:13
CPC Classifications
F; F16; F16H; F16H19/00; F16H19/02; F16H19/025; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
181 words
Apparatus for axial movement of a movable member at least a part of which is essentially cylindrically shaped and having a longitudinal axis comprising: a. a rigid annular sleeve to be positioned about said cylindrical shape, said rigid annular sleeve having a longitudinal axis parallel to that of said movable member; b. a resilient member interior of said sleeve and relatively immovable with respect to said sleeve; c. a plurality of cylindrically shaped rollers interior of and in contact with said resilient member, said rollers being annularly arranged and spaced from each other, and being disposed on and bearing against a path having a helical gradient with respect to the longitudinal axis of said rigid sleeve and being disposed to bear against said cylindrical shape and said rollers each having a longitudinal axis parallel to that of said movable member; and d. rotation of the rigid annular sleeve causing rotation of the roller members through the resilient member and movement of the rollers along the path having a helical gradient resulting in movement of the cylindrical member along its longitudinal axis.
Claim 2
Dependent Claim
181 words
Apparatus for axial movement of a movable member at least a part of which is essentially cylindrically shaped and having a longitudinal axis comprising: a. a rigid annular sleeve to be positioned about said cylindrical shape, said rigid annular sleeve having a longitudinal axis parallel to that of said movable member; b. a resilient member interior of said sleeve and relatively immovable with respect to said sleeve; c. a plurality of cylindrically shaped rollers interior of and in contact with said resilient member, said rollers being annularly arranged and spaced from each other, and being disposed on and bearing against a path having a helical gradient with respect to the longitudinal axis of said rigid sleeve and being disposed to bear against said cylindrical shape and said rollers each having a longitudinal axis parallel to that of said movable member; and d. rotation of the rigid annular sleeve causing rotation of the roller members through the resilient member and movement of the rollers along the path having a helical gradient resulting in movement of the cylindrical member along its longitudinal axis.
Claim 3
Dependent Claim
193 words
Apparatus for axial movement of a movable member at least a part of which is essentially cylindrically shaped and having a longitudinal axis comprising: a. a rigid annular sleeve to be positioned about said cylindrical shape, said rigid annular sleeve having a longitudinal axis parallel to that of said movable member; b. a resilient member interior of said sleeve and relatively immovable with respect to said sleeve; c. a plurality of cylindrically shaped rollers interior of and in contact with said resilient member, said rollers being annularly arranged and spaced from each other, and being disposed on and bearing against a path having a helical gradient with respect to the longitudinal axis of said rigid sleeve and being disposed to bear against said cylindrical shape and said rollers each having a longitudinal axis parallel to that of said movable member; d. rotation of the rigid annular sleeve causing rotation of the roller members through the resilient member and movement of the rollers along the path having a helical gradient resulting in movement of the cylindrical member along its longitudinal axis; e. and said rollers being supported on the helical path by ball bearings.
Claim 4
Dependent Claim
193 words
Apparatus for axial movement of a movable member at least a part of which is essentially cylindrically shaped and having a longitudinal axis comprising: a. a rigid annular sleeve to be positioned about said cylindrical shape, said rigid annular sleeve having a longitudinal axis parallel to that of said movable member; b. a resilient member interior of said sleeve and relatively immovable with respect to said sleeve; c. a plurality of cylindrically shaped rollers interior of and in contact with said resilient member, said rollers being annularly arranged and spaced from each other, and being disposed on and bearing against a path having a helical gradient with respect to the longitudinal axis of said rigid sleeve and being disposed to bear against said cylindrical shape and said rollers each having a longitudinal axis parallel to that of said movable member; d. rotation of the rigid annular sleeve causing rotation of the roller members through the resilient member and movement of the rollers along the path having a helical gradient resulting in movement of the cylindrical member along its longitudinal axis; e. and said rollers being supported on the helical path by ball bearings.
Claim 5
Dependent Claim
23 words
The apparatus of claim 2 wherein the upper and lower ends of the helical path are connected by a steeply inclined return member.
Claim 6
Dependent Claim
220 words
Apparatus for axial movement of a movable member at least a part of which is essentially cylindrically shaped and having a longitudinal axis comprising: a. a rigid annular sleeve to be positioned about said cylindrical shape, said rigid annular sleeve having a longitudinal axis parallel to that of said movable member; b. a resilient member interior of said sleeve and relatively immovable with respect to said sleeve; c. a plurality of cylindrically shaped rollers interior of and in contact with said resilient member, said rollers being annularly arranged and spaced from each other, and being disposed on and bearing against a path having a helical gradient with respect to the longitudinal axis of said rigid sleeve and being disposed to bear against said cylindrical shape and said rollers each having a longitudinal axis parallel to that of said movable member; d. rotation of the rigid annular sleeve causing rotation of the roller members through the resilient member and movement of the rollers along the path having a helical gradient resulting in movement of the cylindrical member along its longitudinal axis; e. and wherein the upper and lower ends of the helical path are connected by a steeply inclined return member; f. and wherein the resilient member is not in contact with the rollers in the area of the return member.
Claim 7
Dependent Claim
220 words
Apparatus for axial movement of a movable member at least a part of which is essentially cylindrically shaped and having a longitudinal axis comprising: a. a rigid annular sleeve to be positioned about said cylindrical shape, said rigid annular sleeve having a longitudinal axis parallel to that of said movable member; b. a resilient member interior of said sleeve and relatively immovable with respect to said sleeve; c. a plurality of cylindrically shaped rollers interior of and in contact with said resilient member, said rollers being annularly arranged and spaced from each other, and being disposed on and bearing against a path having a helical gradient with respect to the longitudinal axis of said rigid sleeve and being disposed to bear against said cylindrical shape and said rollers each having a longitudinal axis parallel to that of said movable member; d. rotation of the rigid annular sleeve causing rotation of the roller members through the resilient member and movement of the rollers along the path having a helical gradient resulting in movement of the cylindrical member along its longitudinal axis; e. and wherein the upper and lower ends of the helical path are connected by a steeply inclined return member; f. and wherein the resilient member is not in contact with the rollers in the area of the return member.
Claim 8
Dependent Claim
18 words
The apparatus of claim 1 wherein there are both upper and lower helical paths for guiding the rollers.
Claim 9
Dependent Claim
257 words
Apparatus for axial movement of a movable member at least a part of which is essentially cylindrically shaped and having a longitudinal axis comprising: a. a pair of rigid annular sleeves to be positioned about said cylindrical shape, each said rigid annular sleeve having a lOngitudinal axis parallel to that of said movable member; b. a resilient member interior of each said sleeve and relatively immovable with respect to each said sleeve; c. a plurality of cylindrically shaped rollers interior of and in contact with each said resilient member, said rollers each having a longitudinal axis parallel to that of said movable member, said rollers being annularly arranged and spaced from each other and being disposed to bear against said cylindrical shape and the plurality of cylindrically shaped rollers in contact with one said resilient member being disposed on and bearing against a path having a first helical gradient with respect to the longitudinal axis of said rigid sleeve and the plurality of cylindrically shaped rollers in contact with the other said resilient member being disposed on and bearing against a path having a second helical gradient with respect to the longitudinal axis of the said rigid annular sleeve, said second gradient being equal in gradient distance but opposite in gradient direction to said first helical gradient; and d. rotation of the rigid annular sleeves causing rotation of the roller members through the resilient member and movement of the rollers along the paths having helical gradients resulting in movement of the cylindrical member along its longitudinal axis.
Claim 10
Dependent Claim
257 words
Apparatus for axial movement of a movable member at least a part of which is essentially cylindrically shaped and having a longitudinal axis comprising: a. a pair of rigid annular sleeves to be positioned about said cylindrical shape, each said rigid annular sleeve having a lOngitudinal axis parallel to that of said movable member; b. a resilient member interior of each said sleeve and relatively immovable with respect to each said sleeve; c. a plurality of cylindrically shaped rollers interior of and in contact with each said resilient member, said rollers each having a longitudinal axis parallel to that of said movable member, said rollers being annularly arranged and spaced from each other and being disposed to bear against said cylindrical shape and the plurality of cylindrically shaped rollers in contact with one said resilient member being disposed on and bearing against a path having a first helical gradient with respect to the longitudinal axis of said rigid sleeve and the plurality of cylindrically shaped rollers in contact with the other said resilient member being disposed on and bearing against a path having a second helical gradient with respect to the longitudinal axis of the said rigid annular sleeve, said second gradient being equal in gradient distance but opposite in gradient direction to said first helical gradient; and d. rotation of the rigid annular sleeves causing rotation of the roller members through the resilient member and movement of the rollers along the paths having helical gradients resulting in movement of the cylindrical member along its longitudinal axis.
Claim 11
Dependent Claim
19 words
The apparatus of claim 6 wherein each of the rigid annular sleeves can be operated independently of the other.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |