Patent US4569157A successfully refreshed from Google Patents.
US4569157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flagging apparatus and machine equipped therewith
Assignee: Milacron Inc
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Filing: 1984-12-24
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Granted: 1986-02-11
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Expires: 2004-12-24
Abstract
Abstract A flagging apparatus having non-contacting proximity switches emitting a directional energy field and producing a signal in response to an induced alteration of the energy field, a rotatable target element having target faces for engaging and altering the energy field and a probe attached to the target element and contacted by a surface of a workpiece is provided for repetitively positioning workpieces in the work space of a grinder in reference to a grinding wheel. Advantageously, the flagging apparatus is operative in either of two opposing directions without a mechanical and/or electrical change over or modification in the apparatus with a change in operating direction. To achieve the operation in either of two opposing directions the target faces of the target element are spaced apart from each other such that the sequence in which the energy fields are engaged and altered by the target faces remains independent of the direction of rotation of the target element.
Inventors
- 👤 Dennis R. Riehle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:34
CPC Classifications
B; B24; B24B; B24B49/00; B24B49/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
176 words
A flagging apparatus, operable in either of two opposing directions without a required modification of the apparatus, for positioning a workpiece at a predetermined location in a work space in relation to a tool for shaping the workpiece by sensing off of a surface of the workpiece comprising (a) a body; (b) at least one non-contacting, non-mechanical proximity switch emitting a directional energy field and generating a signal in response to an externally induced change in the field for indicating the position of the workpiece in the work space, said switch being in a field engageable, non-contacting orientation in respect to; (c) a target element movable in either of two opposing directions having at least two target faces movable along a path through the energy field and interactive with the field, said target faces spaced apart from each other in a constant field interactive sequence relation, for inducing changes in the field; and (d) a probe attached to the target element for contacting a surface of the workpiece and activating the movement of the target element.
Claim 2
Dependent Claim
176 words
A flagging apparatus, operable in either of two opposing directions without a required modification of the apparatus, for positioning a workpiece at a predetermined location in a work space in relation to a tool for shaping the workpiece by sensing off of a surface of the workpiece comprising (a) a body; (b) at least one non-contacting, non-mechanical proximity switch emitting a directional energy field and generating a signal in response to an externally induced change in the field for indicating the position of the workpiece in the work space, said switch being in a field engageable, non-contacting orientation in respect to; (c) a target element movable in either of two opposing directions having at least two target faces movable along a path through the energy field and interactive with the field, said target faces spaced apart from each other in a constant field interactive sequence relation, for inducing changes in the field; and (d) a probe attached to the target element for contacting a surface of the workpiece and activating the movement of the target element.
Claim 3
Dependent Claim
16 words
The apparatus according to claim 1 further including a movable means for carrying the proximity switch.
Claim 4
Dependent Claim
14 words
The apparatus according to claim 2 wherein the means is adjustable to set positions.
Claim 5
Dependent Claim
10 words
The apparatus according to claim 3 having two proximity switches.
Claim 6
Dependent Claim
39 words
The apparatus according to claim 4 wherein the two proximity switches are substantially in a side-by-side arrangement and emit an induced alternating radio frequency field from surfaces substantially facing the target faces in a direction toward the target face.
Claim 7
Dependent Claim
13 words
The apparatus of claim 5 wherein the target element has three target faces.
Claim 8
Dependent Claim
24 words
The combination comprising a machine having a movable workpiece carrying means for shaping a metal workpiece, and the flagging apparatus according to claim 1.
Claim 9
Dependent Claim
13 words
The combination according to claim 7 wherein the machine is a grinding machine.
Claim 10
Dependent Claim
19 words
The combination comprising a grinding machine for shaping a metal workpiece and a flagging apparatus according to claim 6.
References Cited (Backward Citations)
US2342854A
Cited
US2528295A
Cited
US2559431A
Cited
US3145508A
Cited
US3763600A
Cited
US3855734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-02-10 | 1989-08-12 | 1990-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-10 | 1993-08-12 | 1994-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-10 | 1997-08-12 | 1998-02-11 | $7700.00 | Window Closed / Lapsed |