Patent US3627437A successfully refreshed from Google Patents.
US3627437A
Expired / Lapsed
US
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Toolholder detection system
Assignee: Individual
•
Filing: 1969-09-15
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Granted: 1971-12-14
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Expires: 1989-09-15
Abstract
Abstract A ''''no tool,'''' ''''broken tool'''' or ''''improperly set tool'''' detection device for use with taps, drills, reamers, boring tools, counter bores and milling cutters which include a toolholder having assembled first and second parts normally biased outwardly of each other with a radioactive element on one part and a shield upon the other part normally spaced from the radioactive element and in conjunction with a radiation detection system whereby upon relative longitudinal movement of the toolholder first and second parts, said shield will protectively enclose said radioactive element, said relative movement being prevented when there is ''''no tool,'''' ''''broken tool'''' or an ''''improperly set tool,'''' the means for assuring said relative longitudinal movement which includes first longitudinal slots on the tool first part and corresponding laterally displaced second slots on the tool second part with angular extensions of said second slots and with balls interposed respectively between said first slots and the extensions of said second slots, whereby rotative drive delivered to said second part effects a cam action between said balls and angular extension to effect a relative longitudinal movement between said first and second parts.
Inventors
- 👤 Theodore M Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:55
CPC Classifications
B; B23; B23B; B23B49/00; B23B49/001; Y; Y10; Y10T; Y10T408/00; Y10T408/21; Y10T408/94
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
310 words
In a ''''no tool,'''' ''''broken tool'''' or ''''improperly set tool, '''' detection device for use with taps, drills, reamers, boring tools, counterbores and milling cutters; a first part having a bore and mounting a tool adapted to operatively engage a workpiece; a second part having a bore and having a shank adapted for connection to a source of rotative power and longitudinal feed; means mounting the second part within the bore of the first part for operative driving engagement therewith and for longitudinal movement relatively thereto on engagement of said tool with a workpiece; a radioactive impregnated element mounted upon one of said parts; and a shield mounted upon the other of said parts, normally spaced from said radioactive element; relative movement of said parts moving said shield to cover and enclose said radioactive element; the rays from said radioactive element adapted to energize a radiation detection system upon failure of said relative longitudinal movement due to the existence of ''''no tool,'''' ''''broken tool'''' or an ''''improperly set tool''''; the means for mounting the second part for driving engagement with the first part including a plurality of longitudinal, parallel first slots formed through said first part communicating with its bore; corresponding parallel longitudinal second slots formed upon the exterior of said second part laterally displaced from said first slots; the respective forward ends of said second slots having angular extensions forming camming surfaces in said second part, and balls interposed between and nested respectively in said first slots and in the angular extensions of said second slots; whereby upon initial rotary drive of said first part, and engagement of the tool with said workpiece, the cam action between said balls and angular extensions effects a relative longitudinal movement between said first and second parts effecting such relative movement between said shield and radioactive element as to protectively enclose the same.
Claim 2
Dependent Claim
310 words
In a ''''no tool,'''' ''''broken tool'''' or ''''improperly set tool, '''' detection device for use with taps, drills, reamers, boring tools, counterbores and milling cutters; a first part having a bore and mounting a tool adapted to operatively engage a workpiece; a second part having a bore and having a shank adapted for connection to a source of rotative power and longitudinal feed; means mounting the second part within the bore of the first part for operative driving engagement therewith and for longitudinal movement relatively thereto on engagement of said tool with a workpiece; a radioactive impregnated element mounted upon one of said parts; and a shield mounted upon the other of said parts, normally spaced from said radioactive element; relative movement of said parts moving said shield to cover and enclose said radioactive element; the rays from said radioactive element adapted to energize a radiation detection system upon failure of said relative longitudinal movement due to the existence of ''''no tool,'''' ''''broken tool'''' or an ''''improperly set tool''''; the means for mounting the second part for driving engagement with the first part including a plurality of longitudinal, parallel first slots formed through said first part communicating with its bore; corresponding parallel longitudinal second slots formed upon the exterior of said second part laterally displaced from said first slots; the respective forward ends of said second slots having angular extensions forming camming surfaces in said second part, and balls interposed between and nested respectively in said first slots and in the angular extensions of said second slots; whereby upon initial rotary drive of said first part, and engagement of the tool with said workpiece, the cam action between said balls and angular extensions effects a relative longitudinal movement between said first and second parts effecting such relative movement between said shield and radioactive element as to protectively enclose the same.
Claim 3
Dependent Claim
31 words
In the detection device of claim 1, a coil spring extending through said bores and interposed in compression between said first and second parts normally biasing same outwardly of each other.
Claim 4
Dependent Claim
96 words
In the detection device of claim 1, an elongated spring seat bushing within and coaxial of said second part including an annular flange intermediate its ends; a coiled spring receiving said bushing and interposed in compression between said first part and said flange; and a cocking spring coaxial with and receiving said bushing and interposed in compression between said flange and said second part; retraction of said longitudinal feed and disengagement of said tool and workpiece permitting relative movement between first and second parts in the opposite direction for spacing said shield from said radioactive element.
Claim 5
Dependent Claim
27 words
In the detection device of claim 1, angular extensions of said second slots being in the range of 15* to 75* with respect to the tool axis.
References Cited (Backward Citations)
US3381550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |