US3584534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for driving a hole cutter
Assignee: Individual
•
Filing: 1969-04-11
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Granted: 1971-06-15
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Expires: 1989-04-11
Abstract
Abstract A drive unit for a hole cutter such as a hole saw having a housing in which a sleeve is journaled for rotation about a fixed axis. A shaft having a hole cutter at one end thereof is journaled in the sleeve for rotation about an axis inclined to the axis of the sleeve. The sleeve and shaft rotate at different speeds in the same or opposite directions so that the hole cutter rotates about its own central axis and simultaneously revolves about the axis of the sleeve at an acute angle.
Inventors
- 👤 Everett D Hougen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:59
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/0018; B23B51/04; B23B51/0426; B23Q; B23Q1/00; B23Q1/25; B23Q1/26; B23Q1/34; B23Q1/44; B23Q1/50; B23Q1/54; B23Q1/545; B23Q1/5456; B23Q5/00; B23Q5/22; B23Q5/32; B27; B27B; B27B5/00; B27B5/12; B23B2260/00; B23B2260/11; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/306664; Y10T409/306776; Y10T409/307056; Y10T409/307112; Y10T409/30756; Y10T82/00; Y10T82/12; Y10T82/122
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
161 words
A device for driving a hole cutter of the type having a cylindrical wall provided with teeth at one end of said wall lying in a plane perpendicular to the central axis of the cutter comprising, a housing, means forming a sleeve journaled in said housing for rotation about a first axis, means for rotating said sleeve, a shaft journaled in said sleeve for rotation about an axis inclined to the axis of rotation of the sleeve at an acute angle, means for varying the angular inclination of said shaft relative to the axis of rotation of said sleeve, means for rotating said shaft including and angular flexible connection with said shaft, said shaft including a pair of connected members which are axially adjustable relative to one another for varying the effective length of said shaft, said shaft extending outwardly of said housing at one end thereof and means at said end of the shaft for mounting a hole cutter thereon.
Claim 2
Independent Claim
161 words
A device for driving a hole cutter of the type having a cylindrical wall provided with teeth at one end of said wall lying in a plane perpendicular to the central axis of the cutter comprising, a housing, means forming a sleeve journaled in said housing for rotation about a first axis, means for rotating said sleeve, a shaft journaled in said sleeve for rotation about an axis inclined to the axis of rotation of the sleeve at an acute angle, means for varying the angular inclination of said shaft relative to the axis of rotation of said sleeve, means for rotating said shaft including and angular flexible connection with said shaft, said shaft including a pair of connected members which are axially adjustable relative to one another for varying the effective length of said shaft, said shaft extending outwardly of said housing at one end thereof and means at said end of the shaft for mounting a hole cutter thereon.
Claim 3
Dependent Claim
21 words
A device as called for in claim 1 wherein one of said axially adjustable members includes said hole cutter mounting means.
Claim 4
Independent Claim
197 words
The method of cutting a hole through a workpiece utilizing a hole cutter of the open-ended cup type having a cylindrical sidewall provided with teeth around the lower free edge thereof which lie in a plane perpendicular to the central axis of the cutter which comprises simultaneously rotating the cutter about its central axis, inclining the axis of the cutter at an acute angle to a second axis aligned coaxially with the axis of the hole to be cut, revolving the axis of the cutter around said second axis at a uniform speed and feeding the cutter into the work while maintaining the second axis axially aligned with the axis of the hole to be cut and the cutter axis inclined to the second axis at said acute angle, said axes being maintained inclined to each other such that they intersect at a point above the lower open end of the cutter with the first axis being inclined away from the second axis in a direction from said point of intersection and towards the open end of the cutter and with the second axis intersecting the plane of the teeth within the circle defined by the teeth.
Claim 5
Independent Claim
197 words
The method of cutting a hole through a workpiece utilizing a hole cutter of the open-ended cup type having a cylindrical sidewall provided with teeth around the lower free edge thereof which lie in a plane perpendicular to the central axis of the cutter which comprises simultaneously rotating the cutter about its central axis, inclining the axis of the cutter at an acute angle to a second axis aligned coaxially with the axis of the hole to be cut, revolving the axis of the cutter around said second axis at a uniform speed and feeding the cutter into the work while maintaining the second axis axially aligned with the axis of the hole to be cut and the cutter axis inclined to the second axis at said acute angle, said axes being maintained inclined to each other such that they intersect at a point above the lower open end of the cutter with the first axis being inclined away from the second axis in a direction from said point of intersection and towards the open end of the cutter and with the second axis intersecting the plane of the teeth within the circle defined by the teeth.
Claim 6
Dependent Claim
16 words
The method called for in claim 3 wherein said angle of inclination is less than 10*.
Claim 7
Dependent Claim
41 words
The method called for in claim 4 wherein the ratio between the speed of rotation of the cutter and the speed of revolution of the cutter axis is greater than 1 to 1 but not more than about 20 to 1.
Claim 8
Dependent Claim
36 words
The method called for in claim 4 wherein the difference between the speed of rotation of the cutter and the speed of revolution of the cutter axis is less than the lesser of said two speeds.
Claim 9
Independent Claim
216 words
A device for driving a hole cutter of the type having a cylindrical wall provided with teeth at one end of said wall lying in a plane perpendicular to the central axis of the cutter comprising, a housing, means forming a sleeve journaled in said housing for rotation about a first axis, means for rotating said sleeve, a shaft journaled in said sleeve for rotation about an axis inclined to the axis of rotation of the sleeve at an acute angle, means for rotating said shaft, said shaft extending outwardly of said housing at one end thereof, means at said end of the shaft for mounting a hole cutter thereon, said sleeVe comprising a pair of telescopically engaged members which are relatively rotatable, one of said members being eccentrically disposed relative to the other, said shaft having its opposite end pivotally supported concentric with the axis of rotation of said sleeve, said eccentrically disposed member engaging said shaft at a portion thereof spaced axially form said pivotally supported end so that when the eccentric member is rotated relative to the other member of the sleeve said one end of the shaft is displaced radially relative to said pivotal support to thereby vary the inclination of said shaft relative to the axis of rotation of the sleeve.
Claim 10
Independent Claim
216 words
A device for driving a hole cutter of the type having a cylindrical wall provided with teeth at one end of said wall lying in a plane perpendicular to the central axis of the cutter comprising, a housing, means forming a sleeve journaled in said housing for rotation about a first axis, means for rotating said sleeve, a shaft journaled in said sleeve for rotation about an axis inclined to the axis of rotation of the sleeve at an acute angle, means for rotating said shaft, said shaft extending outwardly of said housing at one end thereof, means at said end of the shaft for mounting a hole cutter thereon, said sleeVe comprising a pair of telescopically engaged members which are relatively rotatable, one of said members being eccentrically disposed relative to the other, said shaft having its opposite end pivotally supported concentric with the axis of rotation of said sleeve, said eccentrically disposed member engaging said shaft at a portion thereof spaced axially form said pivotally supported end so that when the eccentric member is rotated relative to the other member of the sleeve said one end of the shaft is displaced radially relative to said pivotal support to thereby vary the inclination of said shaft relative to the axis of rotation of the sleeve.
Claim 11
Independent Claim
298 words
A device for cutting holes with a cylindrical hole cutter of the open-ended cup type having a cylindrical wall with a plurality of cutting teeth around the lower free edge thereof lying in a plane perpendicular to the central axis of the cutter comprising, a first member, means for rotating said first member about a first axis, a second member journaled on the first member for rotation about a second axis inclined at an acute angle to the first axis, means for rotating the second member about the second axis, said second member having a free end, a hole cutter of the above-described type mounted on said end of the second member for rotation coaxially therewith, the first and second axes intersecting at a point above the lower open end of the cutter, said second axis being inclined away from the first axis in a direction from said point of intersection towards the open end of the cutter, said first axis intersecting the plane of said cutting teeth within the circle defined by the cutting teeth, whereby, when said members are rotated about their respective axes and the device is fed into a workpiece along said first axis, the teeth cut an annular groove in the workpiece which has a cylindrical sidewall and an arcuate bottom wall, said bottom wall having a radius corresponding to the radial distance between the point of intersection of said first and second axes and the crests of said teeth and the radius of the groove sidewall corresponding to the base of a right triangle whose hypotenuse corresponds to the radius of the cutter plus the radial distance in the plane of the teeth between the axis of the cutter and the intersection of said first axis with the plane of the teeth.
Claim 12
Independent Claim
298 words
A device for cutting holes with a cylindrical hole cutter of the open-ended cup type having a cylindrical wall with a plurality of cutting teeth around the lower free edge thereof lying in a plane perpendicular to the central axis of the cutter comprising, a first member, means for rotating said first member about a first axis, a second member journaled on the first member for rotation about a second axis inclined at an acute angle to the first axis, means for rotating the second member about the second axis, said second member having a free end, a hole cutter of the above-described type mounted on said end of the second member for rotation coaxially therewith, the first and second axes intersecting at a point above the lower open end of the cutter, said second axis being inclined away from the first axis in a direction from said point of intersection towards the open end of the cutter, said first axis intersecting the plane of said cutting teeth within the circle defined by the cutting teeth, whereby, when said members are rotated about their respective axes and the device is fed into a workpiece along said first axis, the teeth cut an annular groove in the workpiece which has a cylindrical sidewall and an arcuate bottom wall, said bottom wall having a radius corresponding to the radial distance between the point of intersection of said first and second axes and the crests of said teeth and the radius of the groove sidewall corresponding to the base of a right triangle whose hypotenuse corresponds to the radius of the cutter plus the radial distance in the plane of the teeth between the axis of the cutter and the intersection of said first axis with the plane of the teeth.
Claim 13
Dependent Claim
23 words
A device as called for in claim 8 including means for varying the inclination of said second axis relative to the first axis.
Claim 14
Dependent Claim
23 words
A device as called for in claim 8 wherein said rotating means are adapted to rotate the shaft and sleeve at different speeds.
Claim 15
Dependent Claim
39 words
A device as called for in claim 8 including a cutter pilot member mounted on said first member concentric with said first axis, said pilot extending through said cutter and projecting outwardly below the plane of the teeth thereof.
Claim 16
Dependent Claim
18 words
A device as called for in claim 8 wherein said acute angle is not greater than about 10*.
Claim 17
Dependent Claim
18 words
A device as called for in claim 8 wherein said acute angle is not greater than about 2*.
Claim 18
Dependent Claim
39 words
A device as called for in claim 8 wherein the radial distance in the plane of said cutter teeth between the axis of the cutter and the axis of the first member is not more than about 0.040 inches.
Claim 19
Dependent Claim
39 words
A device as called for in claim 8 wherein the means for rotating said first and second members are interconnected such that the speed ratio thereof is greater than 1 to 1 but not greater than 1 to 20.
Claim 20
Dependent Claim
39 words
A device as called for in claim 8 wherein the means for rotating the first and second members are interconnected such that the speed ratio thereof is greater than 1 to 1 but not greater than 1 to 4.
Claim 21
Dependent Claim
39 words
A device as called for in claim 8 wherein the means for rotating the first and second members are interconnected such that the speed ratio thereof is greater than 1 to 1 but not greater than 1 to 2.
Claim 22
Dependent Claim
56 words
A device as called for in claim 8 including a housing, said first member comprising a sleeve journaled in the housing and the second member comprising a shaft journaled on said sleeve, said shaft having one end extending outwardly of said housing and means at said end of the shaft for mounting the hole cutter thereon.
Claim 23
Dependent Claim
84 words
A device as called for in claim 18 wherein said sleeve and shaft have telescopically related portions spaced axially from the intersection of said two axes, means connecting said sleeve and shaft for enabling said shaft to pivot relative to said sleeve about said last-mentioned point of intersection and an eccentric member extending circumferentially between and interengaging said telescopically related portions of said shaft and sleeve for pivoting the shaft about said last-mentioned point of intersection in response to rotation of the eccentric member.
Claim 24
Dependent Claim
71 words
A device as called for in claim 18 wherein said means for mounting the hole cutter on the end of the shaft has an axially extending bore therein, said shaft extending through said bore, and a cutter pilot member mounted on the portion of the shaft extending through said bore concentric with the axis of the shaft, said pilot member extending axially below the plane of the teeth on the cutter.
Claim 25
Dependent Claim
52 words
A device as called for in claim 18 wherein said means for mounting the hole cutter on the end of said shaft are adjustable axially of the shaft to vary the radial distance between the axis of the cutter and the axis of the sleeve in the plane of the cutter teeth.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |