US3654688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for insertion tool control
Assignee: Heli Coil Corp
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Filing: 1969-12-11
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Granted: 1972-04-11
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Expires: 1989-12-11
Abstract
Abstract A method for controlling the rotative and translational movement of an insertion tool adapted to securably embed inserts in thermoplastic bodies is set forth along with a control system for implementation of the method. The method involves the steps of imparting rotational and extending forces to a tool threadably carrying an insert to partially liquify a thermoplastic body and seat the insert in a desired registration therein, discontinuing the rotational force and maintaining the extending force during an adjustable time period to permit resolidification of the molten thermoplastic body, thereafter discontinuing said extending force and applying both a reverse rotative force and a retracting force to said tool to dethreadingly retract same from said seated insert. In its preferred form the control system for implementation of the method includes fluidic logic control means.
Inventors
- 👤 Paul C Setzler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:48
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/40; B29C66/47; B29C66/474; B29C65/00; B29C65/56; B29C65/64; B29C65/645; B29C66/80; B29C66/82; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; B29C66/84; B29C66/847; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53687; Y10T408/00; Y10T408/65; Y10T408/675; Y10T408/6757
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
243 words
A system for controlling translational and rotative movement of an extendable-retractable tool during the operating cycle thereof, said tool adapted for threadably supporting an insert to be seated in a workpiece, comprising: a. first signal generator means providing an output signal indicating non-residence of said tool in its retracted position; b. second signal generator means providing an output signal indicating that said tool resides in or has resided in its extended position during said operating cycle; c. means receiving said second signal generator output signal and regenerating same with predetermined time delay; d. tool extending and retracting means receiving said first signal generator output signal and said regenerated signal and operatively responsive thereto to apply extending force to said tool to direct same into said extended position, to continue application of said extending force to said tool in said extended position for said predetermined time, and to retract said tool thereafter; and e. means for rotating said tool independently of said tool extending means receiving said first and second signal generator output signals and said regenerated signal and operatively responsive thereto to rotate said tool in a first direction during said extension thereof into said extended position thereby seating said insert in said workpiece, to maintain said tool non-rotating during said predetermined time, thereby providing securement of said insert in said workpiece and to rotate said tool in an opposite direction during said tool retraction thereby dethreading said tool from said seated insert.
Claim 2
Independent Claim
243 words
A system for controlling translational and rotative movement of an extendable-retractable tool during the operating cycle thereof, said tool adapted for threadably supporting an insert to be seated in a workpiece, comprising: a. first signal generator means providing an output signal indicating non-residence of said tool in its retracted position; b. second signal generator means providing an output signal indicating that said tool resides in or has resided in its extended position during said operating cycle; c. means receiving said second signal generator output signal and regenerating same with predetermined time delay; d. tool extending and retracting means receiving said first signal generator output signal and said regenerated signal and operatively responsive thereto to apply extending force to said tool to direct same into said extended position, to continue application of said extending force to said tool in said extended position for said predetermined time, and to retract said tool thereafter; and e. means for rotating said tool independently of said tool extending means receiving said first and second signal generator output signals and said regenerated signal and operatively responsive thereto to rotate said tool in a first direction during said extension thereof into said extended position thereby seating said insert in said workpiece, to maintain said tool non-rotating during said predetermined time, thereby providing securement of said insert in said workpiece and to rotate said tool in an opposite direction during said tool retraction thereby dethreading said tool from said seated insert.
Claim 3
Dependent Claim
46 words
The system claimed in claim 1 wherein said tool rotating means includes tool rotational braking means receiving said first and second signal generator output signals and said regenerated signals and operatively responsive thereto to brake rotation of said tool during residence thereof in said extended position.
Claim 4
Dependent Claim
49 words
The system claimed in claim 1 wherein said tool extending and retracting means includes first means receiving said first signal generator output signal and said regenerated signal and applying said extending force in response thereto and second means receiving said regenerated signal and retracting said tool in response thereto.
Claim 5
Dependent Claim
48 words
The system claimed in claim 1 wherein said tool rotating means includes first means receiving said first and second signal generator output signals and providing said first directional rotation of said tool and second means receiving said regenerated signal and providing said opposite directional rotation of said tool.
Claim 6
Dependent Claim
36 words
The system claimed in claim 3 wherein said first means includes signal combining circuitry directing application of said extending force during occurrence of said first signal generator output signal and simultaneous non-occurrence of said regenerated signal.
Claim 7
Dependent Claim
41 words
The system claimed in claim 4 wherein said first means includes signal combining circuitry directing said first directional rotation of said tool during occurrence of said first signal generator output signal and simultaneous non-occurrence of said second signal generator output signal.
References Cited (Backward Citations)
US3137016A
Cited
US3441965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |