Patent US1286044A successfully refreshed from Google Patents.
Patent US3863353A successfully refreshed from Google Patents.
US3863353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epitrochoidal surface engaging device
Assignee: Illinois Tool Works Inc
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Filing: 1972-09-22
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Granted: 1975-02-04
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Expires: 1992-09-22
Abstract
Abstract The present invention relates generally to improvements in devices for measuring or forming with a high degree of accuracy the contour of a surface defining the cavity of a rotary type combustion engine. The device disclosed herein is particularly designed for use with rotary combustion engines incorporating a rotor presenting three or four apices and having an internal gear which meshes with and orbits about a fixed sungear whose axis is on the central axis of the engine. The seal members at the tips of the rotor apices must maintain contact with the cylinder surface having an epitrochoidal contour. The device disclosed herein includes a rotatable base for horizontally supporting a cylinder block and means for imparting rotation to said base in a given direction about a vertical axis coincident with the center of the epitrochoidal surface defining the cavity of a supported cylinder block. A surface contacting element is shiftable in the opposite direction and novel control means serves to assure positioning of said element in accurate coincidence with said epitrochoidal surface during the rotation of the engine block.
Inventors
- 👤 Oliver E Saari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:29
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/20; F; F01; F01C; F01C1/00; F01C1/22; F02; F02B; F02B53/00; F02B2053/005; F02B2730/00; F02B2730/01; F02B2730/018; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
347 words
A device for engaging an epitrochoidal surface which defines the cavity in the cylinder block of a rotary type engine, including rotatable base means having a first fixed axis of rotation and having a surface dispoSed normal to said axis for supporting an engine cylinder block with the center of the epitrochoidal surface thereof coincident with the axis of rotation of said base means, means rotatable about a second fixed axis spaced laterally a predetermined distance from and parallel to said first fixed axis, work engaging means having a restricted surface area for engaging the epitrochoidal surface of a supported cylinder block, means supporting said work engaging means, pivot means coupling said supporting means with said means rotatable about said second fixed axis and having an axis spaced laterally from and parallel to said second fixed axis, the axis of said pivot means being coincident with the restricted surface area of said work engaging means, the distance between said second fixed axis and the axis of said pivot means being equal to the maximum degree of orbital eccentricity of the epitrochoidal surface of a supported cylinder block, fixed guide means providing a third fixed axis and cooperatively disposed with respect to said work engaging supporting means, said first, second and third fixed axes being located in a common plane, the distance between the axes of said second and third fixed axes being a predetermined fraction of the distance between said first and second fixed axes, means cooperating with said fixed guide means and said supporting means for maintaining said third fixed axis and the points of contact of said work engaging means with the epitrochoidal surface of a supported engine block in a common plane which is normal to a line tangent to said epitrochoidal surface at each point of contact, means for imparting rotation in a given direction to said base means at a given speed, and means for simultaneously imparting movement to said rotatable means in the opposite direction at a predetermined speed of rotation greater than the speed of rotation of said base means.
Claim 2
Independent Claim
347 words
A device for engaging an epitrochoidal surface which defines the cavity in the cylinder block of a rotary type engine, including rotatable base means having a first fixed axis of rotation and having a surface dispoSed normal to said axis for supporting an engine cylinder block with the center of the epitrochoidal surface thereof coincident with the axis of rotation of said base means, means rotatable about a second fixed axis spaced laterally a predetermined distance from and parallel to said first fixed axis, work engaging means having a restricted surface area for engaging the epitrochoidal surface of a supported cylinder block, means supporting said work engaging means, pivot means coupling said supporting means with said means rotatable about said second fixed axis and having an axis spaced laterally from and parallel to said second fixed axis, the axis of said pivot means being coincident with the restricted surface area of said work engaging means, the distance between said second fixed axis and the axis of said pivot means being equal to the maximum degree of orbital eccentricity of the epitrochoidal surface of a supported cylinder block, fixed guide means providing a third fixed axis and cooperatively disposed with respect to said work engaging supporting means, said first, second and third fixed axes being located in a common plane, the distance between the axes of said second and third fixed axes being a predetermined fraction of the distance between said first and second fixed axes, means cooperating with said fixed guide means and said supporting means for maintaining said third fixed axis and the points of contact of said work engaging means with the epitrochoidal surface of a supported engine block in a common plane which is normal to a line tangent to said epitrochoidal surface at each point of contact, means for imparting rotation in a given direction to said base means at a given speed, and means for simultaneously imparting movement to said rotatable means in the opposite direction at a predetermined speed of rotation greater than the speed of rotation of said base means.
Claim 3
Dependent Claim
39 words
A device for engaging an epitrochoidal surface defining the cavity of the cylinder block of a rotary type engine as set forth in claim 1 wherein the means rotatable about said second fixed axis comprises rotatably driven crank means.
Claim 4
Dependent Claim
45 words
A device for engaging an epitrochoidal surface defining the cavity of the cylinder block of a rotary type engine as set forth in claim 1 wherein the means supporting the work engaging means is provided with a longitudinal slot for accommodating said fixed guide means.
Claim 5
Dependent Claim
54 words
A device for engaging an epitrochoidal surface defining the cavity in the cylinder block of a rotary type engine as set forth in claim 1 wherein a pin member serves as said pivot means and extends between the supporting means for the work engaging means and the means rotatable about said second fixed axis.
Claim 6
Dependent Claim
39 words
A device for engaging an epitrochoidal surface defining the cavity of the cylinder block of a rotary type engine as set forth in claim 1 wherein said rotatable base means includes annular gear means movable as a unit therewith.
Claim 7
Dependent Claim
37 words
A device for engaging an epitrochoidal surface defining the cavity of the cylinder block of a rotary type engine as set forth in claim 1 wherein fixed frame means is provided for rotatably supporting said base means.
Claim 8
Dependent Claim
68 words
A device for engaging an epitrochoidal surface defining the cavity of the cylinder block of a rotary type engine as set forth in claim 1 wherein the predetermined distance between said first fixed axis and said second fixed axis is equal to the radius from the center of the rotor to be accommodated by said cavity to the point of engagement of said rotor with said epitrochoidal surface.
Claim 9
Dependent Claim
62 words
A device for engaging an epitrochoidal surface defining the cavity of the cylinder block of a rotary type engine as set forth in claim 1 wherein the means for imparting rotation to said base means in a given direction and said means for imparting rotation in an opposite direction to the means rotatable about said second fixed axis comprises a gear mechanism.
Claim 10
Dependent Claim
52 words
A device for engaging an epitrochoidal surface defining the cavity iN the cylinder block of a rotary type engine as set forth in claim 1 wherein said means for engaging the epitrochoidal surface of a supported cylinder block comprises feeler members for detecting the accuracy of the contour of said epitrochoidal surface.
Claim 11
Dependent Claim
47 words
A device for engaging the epitrochoidal surface defining the cavity of the cylinder block of a rotary type engine as set forth in claim 1 wherein the distance between said second and third fixed axes is one-third of the distance between said first and second fixed axes.
Claim 12
Dependent Claim
55 words
A device for engaging an epitrochoidal surface defining the cavity of the cylinder block of a rotary type engine as set forth in claim 10 wherein the rotative speed of said means rotatable about said second fixed axis is equal to twice the speed of rotation of said base means about said first fixed axis.
Claim 13
Dependent Claim
47 words
A device for engaging an epitrochoidal surface defining the cavity of the cylinder block of a rotary type engine as set forth in claim 1 wherein the distance between said second and third fixed axes is one-fourth of the distance between said first and second fixed axes.
Claim 14
Dependent Claim
55 words
A device for engaging an epitrochoidal surface defining the cavity of the cylinder block of a rotary type engine as set forth in claim 12 wherein the speed of rotation of said means rotatable about said second fixed axis is three times the speed of rotation of said base means about said first fixed axis.
Claim 15
Dependent Claim
36 words
A device for engaging an epitrochoidal surface defining the cavity of a cylinder block of a rotary type engine as set forth in claim 1 wherein said first, second and third fixed axes extend substantially vertical.
Claim 16
Independent Claim
327 words
A device for engaging an epitrochoidal surface which defines the cavity in the cylinder block of a rotary type engine, including rotatable base means having a first fixed axis of rotation and having a surface disposed normal to said axis for supporting an engine cylinder block with the center of the epitrochoidal surface thereof coincident with the axis of rotation of said base means, means rotatable about a second fixed axis spaced laterally from and parallel to said first fixed axis, work engaging means for engaging the epitrochoidal surface of a supported cylinder block, means supporting said work engaging means, means pivotally coupling said supporting means with said means rotatable about said second fixed axis and having an axis spaced laterally from and parallel to said second fixed axis, the axis of said pivotal coupling means having a predetermined location with respect to said work engaging means, the distance between said second fixed axis and the axis of said pivotal coupling means being equal to the maximum degree of orbital eccentricity of the epitrochoidal surface of a supported cylinder block, guide means providing a third fixed axis and cooperatively disposed with respect to said work engaging supporting means, the distance between the axes of said second and third fixed axes having a predetermined relation to the distance between said first and second fixed axes, means cooperating with said fixed guide means and said supporting means for maintaining said third fixed axis and the points of contact of said work engaging means with the epitrochoidal surface of a supported engine block in a common vertical plane which is normal to a line tangent to said epitrochoidal surface at each point of contact, means for imparting rotation in a given direction to said base means at a given speed, and means for simultaneously imparting movement to said rotatable means in such a manner as to assure accurate positioning of said work engaging means with respect to said epitrochoidal surface.
Claim 17
Independent Claim
327 words
A device for engaging an epitrochoidal surface which defines the cavity in the cylinder block of a rotary type engine, including rotatable base means having a first fixed axis of rotation and having a surface disposed normal to said axis for supporting an engine cylinder block with the center of the epitrochoidal surface thereof coincident with the axis of rotation of said base means, means rotatable about a second fixed axis spaced laterally from and parallel to said first fixed axis, work engaging means for engaging the epitrochoidal surface of a supported cylinder block, means supporting said work engaging means, means pivotally coupling said supporting means with said means rotatable about said second fixed axis and having an axis spaced laterally from and parallel to said second fixed axis, the axis of said pivotal coupling means having a predetermined location with respect to said work engaging means, the distance between said second fixed axis and the axis of said pivotal coupling means being equal to the maximum degree of orbital eccentricity of the epitrochoidal surface of a supported cylinder block, guide means providing a third fixed axis and cooperatively disposed with respect to said work engaging supporting means, the distance between the axes of said second and third fixed axes having a predetermined relation to the distance between said first and second fixed axes, means cooperating with said fixed guide means and said supporting means for maintaining said third fixed axis and the points of contact of said work engaging means with the epitrochoidal surface of a supported engine block in a common vertical plane which is normal to a line tangent to said epitrochoidal surface at each point of contact, means for imparting rotation in a given direction to said base means at a given speed, and means for simultaneously imparting movement to said rotatable means in such a manner as to assure accurate positioning of said work engaging means with respect to said epitrochoidal surface.
Claim 18
Dependent Claim
81 words
A device for engaging an epitrochoidal surface defining the cavity in the cylinder block of a rotary type engine as set forth in claim 15 wherein the distance between said first fixed axis and said second fixed axis is equal to the radius of a rotor adapted to be accommodated by said cavity measured from the center of the rotor to the points of engaGement of said rotor with the epitrochoidal surface of a cylinder block supported by said base means.
Claim 19
Independent Claim
356 words
A device for measuring the contour of an epitrochoidal surface which defines the cavity in the cylinder block of a rotary type engine, including rotatable base means having a first fixed axis of rotation and having a surface disposed normal to said axis for supporting an engine cylinder block with the center of the epitrochoidal surface thereof coincident with the axis of rotation of said base means, crank means rotatable about a second fixed axis parallel to and spaced laterally a predetermined distance from said first fixed axis, feeler means having a restricted surface area for detecting the contour of the epitrochoidal surface of a supported cylinder block, feeler means support means, means pivotally coupling said support means with said crank means at a point spaced laterally from said second fixed axis, the axis of said pivotal coupling means being coincident with the restricted detecting surface area of said feeler means, the distance between said second fixed axis and the axis of said pivotal coupling means being equal to the maximum degree of orbital eccentricity of the epitrochoidal surface of a supported cylinder block, guide means providing a third fixed axis and cooperatively disposed with respect to said support means, said first, second and third fixed axes being located in a common plane, the distance between said second and third fixed axes having a predetermined relation to the distance between said first and second fixed axes, means cooperating with said fixed guide means, and the means pivotally coupling the crank means and support means for maintaining said third fixed axis and the points of contact of said feeler means with the epitrochoidal surface of a supported engine block in a common plane which is normal to a line tangent to the epitrochoidal surface at each point of engagement therewith by said feeler means, means for imparting rotation in a given direction to said base means at a given speed, means for simultaneously imparting rotation to said crank means in the opposite direction at a predetermined speed of rotation greater than the speed of rotation of said base means, and indicator means coupled with said feeler means.
Claim 20
Independent Claim
356 words
A device for measuring the contour of an epitrochoidal surface which defines the cavity in the cylinder block of a rotary type engine, including rotatable base means having a first fixed axis of rotation and having a surface disposed normal to said axis for supporting an engine cylinder block with the center of the epitrochoidal surface thereof coincident with the axis of rotation of said base means, crank means rotatable about a second fixed axis parallel to and spaced laterally a predetermined distance from said first fixed axis, feeler means having a restricted surface area for detecting the contour of the epitrochoidal surface of a supported cylinder block, feeler means support means, means pivotally coupling said support means with said crank means at a point spaced laterally from said second fixed axis, the axis of said pivotal coupling means being coincident with the restricted detecting surface area of said feeler means, the distance between said second fixed axis and the axis of said pivotal coupling means being equal to the maximum degree of orbital eccentricity of the epitrochoidal surface of a supported cylinder block, guide means providing a third fixed axis and cooperatively disposed with respect to said support means, said first, second and third fixed axes being located in a common plane, the distance between said second and third fixed axes having a predetermined relation to the distance between said first and second fixed axes, means cooperating with said fixed guide means, and the means pivotally coupling the crank means and support means for maintaining said third fixed axis and the points of contact of said feeler means with the epitrochoidal surface of a supported engine block in a common plane which is normal to a line tangent to the epitrochoidal surface at each point of engagement therewith by said feeler means, means for imparting rotation in a given direction to said base means at a given speed, means for simultaneously imparting rotation to said crank means in the opposite direction at a predetermined speed of rotation greater than the speed of rotation of said base means, and indicator means coupled with said feeler means.
Claim 21
Dependent Claim
80 words
A device for measuring the contour of an epitrochoidal surface defining the cavity in the cylinder block of a rotary type engine as set forth in claim 17, wherein the predetermined distance between said first fixed axis and said second fixed axis is equal to the radius of a rotor adapted to be accommodated by said cavity measured from the center of said rotor to the points of engagement of said rotor with the epitrochoidal surface of a supported cylinder.
Claim 22
Dependent Claim
39 words
A device for measuring the contour of an epitrochoidal surface defining the cavity in the cylinder block of a rotary type engine as set forth in claim 17, wherein said feeler means includes a plurality of aligned feeler elements.
Claim 23
Dependent Claim
45 words
A device for measuring the contour of an epitrochoidal surface defining the cavity in the cylinder block of a rotary type engine as set forth in claim 17, wherein said support means includes a member having an elongate slot for accommodating said fixed guide means.
Claim 24
Dependent Claim
54 words
A device for measuring the contour of an epitrochoidal surface defining the cavity in the cylinder block of a rotary type engine as set forth in claim 17, wherein said feeler means includes an elongate member having longitudinally movable extremity for making restricted area contact with the epitrochoidal surface of a supported engine block.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |