Patent US4858312A successfully refreshed from Google Patents.
US4858312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque control for automatic connector assembly tool
Assignee: Ideal Industries Inc
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Filing: 1988-04-18
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Granted: 1989-08-22
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Expires: 2008-04-18
Abstract
Abstract This invention relates to a method of controlling torque in an electric motor driven connector applicator which applies a desired torque to a twist-on wire connector and a plurality of wire ends positioned within the connector. A desired level of torque is first determined by the connector applicator operator. The torque applied by the connector applicator as it turns a wire connector about the wire ends positioned therein is monitored until the desired level of torque has been reached. The connector applicator is stopped and then rotated in a reverse direction to release the connector held therein.
Inventors
- 👤 Robert Van Naarden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:10
CPC Classifications
H; H01; H01R; H01R43/00; B; B25; B25B; B25B23/00; B25B23/14; B25B23/147; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49174; Y10T29/49181; Y10T29/49764; Y10T29/49766
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A method of controlling torque in an electric motor driven connector tool in which the tool applies a desired torque to a wire connector and a plurality of wire ends positioned therein including the steps of: (1) setting a desired level of torque to be applied, (2) monitoring electric motor torque from start-up until there is no further change in motor torque indicating the motor has reached a steady state no-load torque. (3) adding, when the motor has reached a steady state no-load condition, a voltage representative of the no-load torque to a voltage representative of the desired level of tightening torque, (4) monitoring the torque applied by the connector tool electric motor as it turns a wire connector with wire ends positioned therein by comparing electric motor torque voltage with the voltage representative of the sum of the desired level of torque and the no-load torque. (5) stopping the electric motor when the desired level of torque has been reached, and (6) releasing the connector.
Claim 2
Independent Claim
166 words
A method of controlling torque in an electric motor driven connector tool in which the tool applies a desired torque to a wire connector and a plurality of wire ends positioned therein including the steps of: (1) setting a desired level of torque to be applied, (2) monitoring electric motor torque from start-up until there is no further change in motor torque indicating the motor has reached a steady state no-load torque. (3) adding, when the motor has reached a steady state no-load condition, a voltage representative of the no-load torque to a voltage representative of the desired level of tightening torque, (4) monitoring the torque applied by the connector tool electric motor as it turns a wire connector with wire ends positioned therein by comparing electric motor torque voltage with the voltage representative of the sum of the desired level of torque and the no-load torque. (5) stopping the electric motor when the desired level of torque has been reached, and (6) releasing the connector.
References Cited (Backward Citations)
US3892146A
Cited
US4267914A
Cited
US4375121A
Cited
US4365527A
Cited
US4685050A
Cited
US4730254A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-21 | 1993-02-20 | 1993-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-21 | 1997-02-20 | 1997-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-21 | 2001-02-20 | 2001-08-22 | $7700.00 | Window Closed / Lapsed |