Patent US4090802A successfully refreshed from Google Patents.
US4090802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio detector for detecting dull and broken tools
Assignee: Bilz Werkzeugfabrik GmbH and Co KG
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Filing: 1976-12-27
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Granted: 1978-05-23
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Expires: 1996-12-27
Abstract
Abstract A chuck unit for boring, drilling or cutting tools having a safety clutch so as to prevent overload resulting from broken or dull tools and wherein when the clutch is actuated by an overload a transmitter in the tool support is actuated to radiate a signal which is detected by a receiver so as to indicate the malfunction and/or stop the tool so as to prevent damage to the tool or workpiece.
Inventors
- 👤 Reiner Bilz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:04
CPC Classifications
B; B23; B23B; B23B49/00; B23B49/001; B23Q; B23Q1/00; B23Q1/0009; B23Q11/00; B23Q11/04; F; F16; F16D; F16D7/00; F16D7/04; F16D7/06; Y; Y10; Y10T; Y10T408/00; Y10T408/13; Y10T408/14; Y10T408/16; Y10T408/165; Y10T408/17; Y10T408/172; Y10T408/21
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
127 words
A device for preventing overload of an axially loaded tool comprising, a tool supporting member for receiving a tool in one end and adapted to be received into a motor driven chuck at its other end, said tool supporting member formed of first and second parts, an overload clutch mounted between said first and second parts such that when overload occurs said first and second parts move toward each other to shorten said tool supporting member, a radiant energy transmitter connected to said tool supporting member and actuated when said first and second parts move toward each other, and wherein said tool supporting member is hollow and said transmitter is mounted therein, and an antenna mounted to said tool supporting member and electrically connected to said transmitter.
Claim 2
Independent Claim
127 words
A device for preventing overload of an axially loaded tool comprising, a tool supporting member for receiving a tool in one end and adapted to be received into a motor driven chuck at its other end, said tool supporting member formed of first and second parts, an overload clutch mounted between said first and second parts such that when overload occurs said first and second parts move toward each other to shorten said tool supporting member, a radiant energy transmitter connected to said tool supporting member and actuated when said first and second parts move toward each other, and wherein said tool supporting member is hollow and said transmitter is mounted therein, and an antenna mounted to said tool supporting member and electrically connected to said transmitter.
Claim 3
Dependent Claim
43 words
A device for preventing overload according to claim 1 wherein said transmitter is supported within said first part, a switching means connected to said transmitter, and said switching means actuated when said first and second parts move toward each other during overload conditions.
Claim 4
Dependent Claim
41 words
A device for preventing overload according to claim 2, wherein said switching means includes a magnetically operated switch connected to said transmitter and a magnet connected to said second part and moveable to actuate said magnetically operated switch during overload conditions.
Claim 5
Dependent Claim
18 words
A device for preventing overload according to claim 3, wherein said magnetically operated switch is a reed switch.
Claim 6
Dependent Claim
22 words
A device for preventing overload according to claim 4 including a potentiometer mounted between the output of said transmitter and said antenna.
Claim 7
Dependent Claim
38 words
A device for preventing overload according to claim 1 including a radiant energy receiver mounted so as to receive and detect radiant energy radiated from said transmitter and including output means responsive to radiant energy from said transmitter.
Claim 8
Dependent Claim
16 words
A device for preventing overload according to claim 6 wherein said output means is an indicator.
Claim 9
Dependent Claim
31 words
A device for preventing overload according to claim 6, wherein said output means is connected to control the motor of said motor driven chuck to stop said chuck when overload occurs.
Claim 10
Independent Claim
162 words
A device for preventing overload of an axially loaded tool comprising, a first tool supporting member for receiving a tool in one end and adapted to be received into a motor driven chuck at its other end, said first tool supporting member formed of first and second parts, an overload clutch mounted between said first and second parts such that when overload occurs said first and second parts move toward each other to shorten said tool supporting member, a radiant energy transmitter connected to said first tool supporting member and actuated when said first and second parts move toward each other, further including a plurality of additional tool supporting members each including tools, radiant energy transmitters and overload clutches which energize said transmitters during overload, receiving means for receiving radiation from said transmitters, and wherein certain of said transmitters radiate different signals and said receiver means includes portions responsive to said different signals to detect and respond to signals from particular transmitters.
Claim 11
Independent Claim
162 words
A device for preventing overload of an axially loaded tool comprising, a first tool supporting member for receiving a tool in one end and adapted to be received into a motor driven chuck at its other end, said first tool supporting member formed of first and second parts, an overload clutch mounted between said first and second parts such that when overload occurs said first and second parts move toward each other to shorten said tool supporting member, a radiant energy transmitter connected to said first tool supporting member and actuated when said first and second parts move toward each other, further including a plurality of additional tool supporting members each including tools, radiant energy transmitters and overload clutches which energize said transmitters during overload, receiving means for receiving radiation from said transmitters, and wherein certain of said transmitters radiate different signals and said receiver means includes portions responsive to said different signals to detect and respond to signals from particular transmitters.
Claim 12
Dependent Claim
24 words
A device according to claim 9, wherein more than one transmitter radiates energy at the same frequency and said receiver responsive to said frequency.
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) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |