US3564270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Logic circuit for buffing machine
Assignee: Houdaille Industries Inc
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Filing: 1969-04-16
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Granted: 1971-02-16
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Expires: 1989-04-16
Abstract
Abstract An automatic system for buffing a moving object which includes means for developing a series of pulses in response to the rate of movement of the object to be buffed and for utilizing the pulses so developed to sequentially apply a predetermined buffing force to the moving object. A solid-state logic circuit is employed to control the operation of a solid-state counter. The counter in turn utilizes each count for coupling a power level to the buffing machine so that a given power level is related to each pulse through the counter. Hence, a given power level is related to each pulse through the counter. Hence, a given power level is related to each increment of movement of the object being buffed. A series of gate circuits sense the presence of the object being buffed. A series of gate circuits sense the presence of the object to be buffed and sets a ring counter. When the object to be buffed is sensed by the logic circuit, the ring counter is opened to a pulse generator which is sequenced to the rate of movement of the object being buffed. Effectively, then, the ring counter is counting increments of movement of the object being buffed and utilizing the sequential change of state of individual flip-flops of the ring counter to couple the various power levels to the buffing machine. Essentially, the ring counter biases on respective numbers of transistors with each count, and the power level coupled to each transistor is then applied directly to the buffing machine for generating the instantaneous force required to buff the moving object.
Inventors
- 👤 Glenn Eggert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:30
CPC Classifications
B; B23; B23Q; B23Q15/00; G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/08
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
98 words
In an automatic buffing system having a buffing head for buffing a moving object, a control circuit comprising: means for generating a series of pulses in response to the movement of the object being buffed; solid-state counter means; mEans for coupling pulses from said pulse-generating means to said solid-state counter means; a variable level power supply coupled to said buffing head; and means responsive to the counting of said solid-state counter means for selecting a given power level from said variable level power supply to drive said buffing head into variable force contact with the object being buffed.
Claim 2
Dependent Claim
98 words
In an automatic buffing system having a buffing head for buffing a moving object, a control circuit comprising: means for generating a series of pulses in response to the movement of the object being buffed; solid-state counter means; mEans for coupling pulses from said pulse-generating means to said solid-state counter means; a variable level power supply coupled to said buffing head; and means responsive to the counting of said solid-state counter means for selecting a given power level from said variable level power supply to drive said buffing head into variable force contact with the object being buffed.
Claim 3
Dependent Claim
17 words
A control circuit in accordance with claim 1 wherein said solid-state counter means comprises a ring counter.
Claim 4
Dependent Claim
55 words
A control circuit in accordance with claim 1 wherein said coupling means comprises a logic circuit for developing a logic signal which prevents the passage of pulses to said solid-state counter when the object being buffed is not in a buffing position and which otherwise develops a signal to pass pulses to said solid-state counter.
Claim 5
Dependent Claim
64 words
A control circuit in accordance with claim 1 wherein said means for selecting a given power level from said variable level power supply comprises a series of solid-state switching elements intercoupled between said power supply and said buffing head and wherein each of said solid-state switching elements is biased into an on or off state by the respective counts of said solid-state counter means.
Claim 6
Dependent Claim
129 words
In an automatic buffing system having a buffing head for buffing a moving object, a control circuit comprising: means for generating a series of pulses in response to the movement of the object being buffed; solid-state counter means; means for coupling pulses from said pulse-generating means to said solid-state counter means; said solid-state counter means including a number of series connected flip-flop circuits; each of said flip-flop circuits having a relatively low voltage output state and a relatively high voltage output state; a variable level power supply coupled to said buffing head; and means responsive to the counting of said solid-state counter means for selecting a given power level from said variable level power supply to drive said buffing head into variable force contact with the object being buffed.
Claim 7
Dependent Claim
129 words
In an automatic buffing system having a buffing head for buffing a moving object, a control circuit comprising: means for generating a series of pulses in response to the movement of the object being buffed; solid-state counter means; means for coupling pulses from said pulse-generating means to said solid-state counter means; said solid-state counter means including a number of series connected flip-flop circuits; each of said flip-flop circuits having a relatively low voltage output state and a relatively high voltage output state; a variable level power supply coupled to said buffing head; and means responsive to the counting of said solid-state counter means for selecting a given power level from said variable level power supply to drive said buffing head into variable force contact with the object being buffed.
Claim 8
Dependent Claim
80 words
A control circuit in accordance with claim 5 wherein said means for selecting a given power level from said variable level power supply comprises a number of solid-state switching devices each having a given power level coupled to one of its output terminals and each having the output of one of said flip-flop circuits coupled to one of its input terminals, whereby the switching action of said solid-state switching devices is controlled by the output state of said flip-flop circuits.
Claim 9
Dependent Claim
41 words
A control circuit in accordance with claim 6 wherein a logic circuit is provided to interrupt the passing of pulses to said solid-state counter means when the object being buffed is not in a desired position relative to the buffing head.
Claim 10
Dependent Claim
64 words
A control circuit in accordance with claim 7 wherein said logic circuit includes a number of NOR gates and means for applying a blocking signal to at least one of said NOR gates and wherein pulses from said pulse-generating means are coupled to an input of said one NOR gate with the output thereof being coupled to the trigger terminals of said flip-flop circuits.
Claim 11
Dependent Claim
64 words
A control circuit in accordance with claim 8 wherein a pair of sensors are provided to detect the presence of an object being buffed and wherein said logic circuit includes first and second logic networks having inputs coupled to each of said sensors for developing respective logic signals indicative of the presence or absence of an object being buffed beneath each of said sensors.
Claim 12
Dependent Claim
45 words
A control circuit in accordance with claim 6 wherein a negative power level is provided to be coupled to drive said buffing head in response to the last triggered flip-flop of said solid-state counter means to raise the buffing head from the object being buffed.
Claim 13
Dependent Claim
150 words
In an automatic buffing system having a buffing head and associated drive means for buffing an object moving transversely of the buffing head, a contrOl circuit comprising: means for generating a series of pulses, each pulse being generated simultaneously with an incremental forward movement of the object being buffed relative to the buffing head; solid-state counter means; means for coupling pulses from said pulse-generating means to said solid-state counter means when the object being buffed reaches a desired point in its path of travel relative to the buffing head; a number of different level power sources; means responsive to each count of said counter means for coupling one of said different level power sources to the buffing head drive means; and whereby a given power level is applied to said buffing head in response to each increment of travel of the object being buffed as determined by said pulse-generating means.
Claim 14
Dependent Claim
150 words
In an automatic buffing system having a buffing head and associated drive means for buffing an object moving transversely of the buffing head, a contrOl circuit comprising: means for generating a series of pulses, each pulse being generated simultaneously with an incremental forward movement of the object being buffed relative to the buffing head; solid-state counter means; means for coupling pulses from said pulse-generating means to said solid-state counter means when the object being buffed reaches a desired point in its path of travel relative to the buffing head; a number of different level power sources; means responsive to each count of said counter means for coupling one of said different level power sources to the buffing head drive means; and whereby a given power level is applied to said buffing head in response to each increment of travel of the object being buffed as determined by said pulse-generating means.
Claim 15
Dependent Claim
89 words
A control circuit in accordance with claim 11 wherein a number of solid-state switching devices are provided, each of said solid-state switching devices having an input terminal and a pair of output terminals, one of said output terminals of each of said solid-state switching devices being coupled to one of said number of different level power sources, the other of said output terminals is coupled to said buffing head drive means, and the input terminal of each of said solid-state switching devices being coupled to said solid-state counter means.
Claim 16
Dependent Claim
47 words
A control circuit in accordance with claim 12 wherein said solid-state counter means comprises a number of series connected flip-flop circuits having first and second output states and wherein the output of said flip-flop circuits are coupled respectively to the input terminals of said solid-state switching devices.
Claim 17
Dependent Claim
40 words
A control circuit in accordance with claim 13 wherein said solid-state switching devices comprise transistors and wherein the on and off state of said transistors is determined by the bias provided by the output of the respectively coupled flip-flop circuits.
Claim 18
Dependent Claim
68 words
A control circuit in accordance with claim 13 wherein said different level power sources provided by a number of variable resistors coupled to a constant power source and wherein each of said resistors are coupled to one of the output terminals of said transistors to provide a predetermined power drive for said buffing head when the respective transistors are turned on by the action of said flip-flop circuits.
Claim 19
Dependent Claim
80 words
The combination comprising: a buffing head and a drive means therefor; a conveyor for moving a bumper beneath said buffing head; means responsive to the movement of said conveyor for generating a series of pulses; counter means for counting the pulses during the time the bumper is passing beneath the buffing head; said counter means generating an output signal for each count; and means using said respective output signals to control the power delivered to the buffing head drive means.
Claim 20
Dependent Claim
80 words
The combination comprising: a buffing head and a drive means therefor; a conveyor for moving a bumper beneath said buffing head; means responsive to the movement of said conveyor for generating a series of pulses; counter means for counting the pulses during the time the bumper is passing beneath the buffing head; said counter means generating an output signal for each count; and means using said respective output signals to control the power delivered to the buffing head drive means.
Claim 21
Dependent Claim
63 words
The combination of claim 16 wherein said counter means comprises a ring counter and wherein a number of transistors are biased on and off by the counting action of said ring counter to couple variable power levels to said buffing head drive means as required by the instantaneous position of said buffing head in its path of travel transversely of said buffing head.
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |