US3802318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling machines
Assignee: Individual
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Filing: 1971-04-27
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Granted: 1974-04-09
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Expires: 1991-04-27
Abstract
Abstract A machine having two relatively movable parts is provided with a control system which has a mechanically movable member is mounted on one of the parts and adapted to be displaced from a datum position by movement of the parts into a predetermined position, e.g. a stop position; the displacement of the mechanically movable member is arranged, for practical reasons, to occur at a position which is offset from the predetermined position and the control system provides switches which are actuated by the mechanically movable member at points positioned on either side of the predetermined position of the table by amounts which are determined by the inertial characteristics of the machine, and conditioning means comprising, e.g. relays sensitive to the direction of movement of the parts and are arranged to render an appropriate actuation of one of the switches effective to initiate a change of rate of movement of the parts so that said change becomes effective at the predetermined position.
Inventors
- 👤 K Sibbald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:19
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; F15B11/04; F15B11/044; B; B41; B41F; B41F13/00; B65; B65B; B65B57/00; F15B11/046; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20538; F15B2211/21; F15B2211/212; F15B2211/40; F15B2211/405; F15B2211/40507; F15B2211/40576; F15B2211/40584; F15B2211/40592; F15B2211/42; F15B2211/426; F15B2211/46; F15B2211/47; F15B2211/473; F15B2211/60; F15B2211/63; F15B2211/6303; F15B2211/6336; F15B2211/665; F15B2211/6654; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7053; F15B2211/75
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
281 words
A control system for a machine of the kind in which two parts moving relatively to each other under the influence of drive means in one or the other of two opposite senses are required to undergo a change in the rate of movement thereof when the two parts are at a certain accurately predetermined position relative to each other, the control system comprising a mechanically movable member mounted on one of the two relatively movable parts of the machine for linear movement perpendicular to the direction of movement of the other relatively movable part, and said movable member being displaceable from a datum position in response to movement of at least one of said two parts towards the predetermined position in either of two opposite senses of relative movement and to attain a position between said datum position and its maximum displacement when the parts are at said predetermined relative position; the improvement including switch means operably associated with and actuated by the mechanically movable member and producing, in each of said opposite senses of relative movement of the parts, a signal when the displacement of the member corresponds with the arrival of said one of the two parts at a position a predetermined distance determined by the inertial characteristics of the machine and the control system in advance of said predetermined position; and conditioning means operably related to said switch means, said conditioning means being sensitive to the sense of relative movement between the two parts and rendering an appropriate one of said signals effective to initiate a change of rate of motion of said two parts so that said change of rate becomes effective at the predetermined position.
Claim 2
Dependent Claim
281 words
A control system for a machine of the kind in which two parts moving relatively to each other under the influence of drive means in one or the other of two opposite senses are required to undergo a change in the rate of movement thereof when the two parts are at a certain accurately predetermined position relative to each other, the control system comprising a mechanically movable member mounted on one of the two relatively movable parts of the machine for linear movement perpendicular to the direction of movement of the other relatively movable part, and said movable member being displaceable from a datum position in response to movement of at least one of said two parts towards the predetermined position in either of two opposite senses of relative movement and to attain a position between said datum position and its maximum displacement when the parts are at said predetermined relative position; the improvement including switch means operably associated with and actuated by the mechanically movable member and producing, in each of said opposite senses of relative movement of the parts, a signal when the displacement of the member corresponds with the arrival of said one of the two parts at a position a predetermined distance determined by the inertial characteristics of the machine and the control system in advance of said predetermined position; and conditioning means operably related to said switch means, said conditioning means being sensitive to the sense of relative movement between the two parts and rendering an appropriate one of said signals effective to initiate a change of rate of motion of said two parts so that said change of rate becomes effective at the predetermined position.
Claim 3
Dependent Claim
325 words
A control system for a machine of the kind in which two parts moving relatively to each other under the influence of drive means in one or the other of two opposite senses are required to undergo a change in the rate of movement when the two parts are at a certain accurately predetermined position relative to each other, the control system comprising a mechanically movable memeber mounted on one of the two relatively movable parts of the machine, and said movable member being displaceable from a datum position in response to movement of at least one of said two parts towards the predetermined position in either of two opposite senses of relative movement, and to attain a position between said datum position and its maximum displacement when the partS are at said predetermined relative position; the improvement including switch means operably associated with and actuated by the mechanically movable member and producing in each of said opposite senses of relative movement of the parts, a signal when the displacement of the member corresponds with the arrival of said one of the two parts at a position a predetermined distance in advance of said predetermined position; and conditioning means operably related to said switch means, said conditioning means being sensitive to the sense of relative movement between the two parts and rendering an appropriate one of said signals effective to initiate a change of relative rate of motion of said two parts so that said change of rate becomes effective at the predetermined position, the movable member comprising a plunger having cam faces at one end thereof, said plunger being mounted on one of the two parts in a slideway which extends perpendicular to the line of relative motion between said two parts at the predetermined position, and the other of said two parts being provided with a member causing movement of the plunger in the slideway as the parts come into the predetermined position.
Claim 4
Dependent Claim
325 words
A control system for a machine of the kind in which two parts moving relatively to each other under the influence of drive means in one or the other of two opposite senses are required to undergo a change in the rate of movement when the two parts are at a certain accurately predetermined position relative to each other, the control system comprising a mechanically movable memeber mounted on one of the two relatively movable parts of the machine, and said movable member being displaceable from a datum position in response to movement of at least one of said two parts towards the predetermined position in either of two opposite senses of relative movement, and to attain a position between said datum position and its maximum displacement when the partS are at said predetermined relative position; the improvement including switch means operably associated with and actuated by the mechanically movable member and producing in each of said opposite senses of relative movement of the parts, a signal when the displacement of the member corresponds with the arrival of said one of the two parts at a position a predetermined distance in advance of said predetermined position; and conditioning means operably related to said switch means, said conditioning means being sensitive to the sense of relative movement between the two parts and rendering an appropriate one of said signals effective to initiate a change of relative rate of motion of said two parts so that said change of rate becomes effective at the predetermined position, the movable member comprising a plunger having cam faces at one end thereof, said plunger being mounted on one of the two parts in a slideway which extends perpendicular to the line of relative motion between said two parts at the predetermined position, and the other of said two parts being provided with a member causing movement of the plunger in the slideway as the parts come into the predetermined position.
Claim 5
Dependent Claim
31 words
The control system in accordance with claim 2, wherein the switch means comprises two micro-switches mounted on the aforesaid one of said two parts in the path of the movable member.
Claim 6
Dependent Claim
107 words
The control system in accordance with claim 1, including further switch means actuable by the mechanically movable member to produce a signal on each displacement of the movable member by an amount which corresponds with the arrival of said one the two parts at a position a further predetermined distance in advance of the predetermined position, and the conditioning means rendering an appropriate one of the signals produced by said further switch means effective to initiate a change of rate of motion to a rate which is intermediate the original rate of motion and the rate of motion which is to become effective at the predetermined position.
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) | 1977-04-08 | 1977-10-08 | 1978-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-08 | 1981-10-08 | 1982-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-08 | 1985-10-08 | 1986-04-09 | $7700.00 | Window Closed / Lapsed |