Patent US4355074A successfully refreshed from Google Patents.
US3670128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable timer having rotating cam and wide range variable dwell
Assignee: Cornelius Co
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Filing: 1969-10-13
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Granted: 1972-06-13
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Expires: 1989-10-13
Abstract
Abstract Adjustable timing apparatus for actuating individual switch contact assemblies at various predetermined times during the cycle of rotation of a shaft including a plurality of cams characterized by the inclusion of a peripheral involute actuating surface which further includes a switch contact resetting portion. Individual switch contact assemblies are removably disposed in operative position adjacent to a cam whereby a cam follower type of switch contact actuator is biased into adjustable continuous contact with the peripheral surface of each of the cams. Means are provided for effecting rotation of the shaft, upon which the cams are disposed, at a predetermined substantially constant rotational velocity. Further means are provided to be responsive to tokens supplied thereto for controlling and initiating the operation of the timing apparatus. A suitable slot adapted to receive tokens is provided with a removable stop for arresting the motion of a coin and further means are provided for generating a signal in response to the presence of the token. The signal is utilized to initiate operation of the timer. Prior to the end of the timing cycle of operation, the removable stop means is actuated to allow release of the token into a collection receptacle.
Inventors
- 👤 Malcolm J Estrem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:29
CPC Classifications
H; H01; H01H; H01H43/00; H01H43/10; H01H43/12; H01H43/125
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
221 words
Adjustable timing apparatus having variable dwell switching comprising in combination; a. a rotatable shaft; b. at least one cam means mounted on said shaft for rotation therewith, said cam means having a peripheral surface including a substantial circumferentially elongated portion of constantly varying radius and a short circumferentially and radially extending switch resetting means of non-constantly varying radius disposed intermediate the portions of largest and smallest radius on said substantial circumferentially elongated portion said last named means being operable to reset a switch contact assembly subsequent to actuation thereof; c. means operable to rotate said shaft; d. at least one spring switch contact assembly having a normal deactuated position, and an actuated position, and including a cam follower in engagement with the peripheral surface of said cam, said cam follower being operable to actuate said switch contact assembly at a predetermined radial position of said cam and said shaft and to reset and deactuate said switch contact assembly by said resetting means causing said switch contact assembly to move past its normal deactuated position before allowing the switch contact assembly to assume its normal deactuated position in response to engagement with said switch resetting means whereby said switch contact assembly may be successively, repeatably actuated at the same angular position of said shaft and said cam as rotation thereof is effected.
Claim 2
Dependent Claim
221 words
Adjustable timing apparatus having variable dwell switching comprising in combination; a. a rotatable shaft; b. at least one cam means mounted on said shaft for rotation therewith, said cam means having a peripheral surface including a substantial circumferentially elongated portion of constantly varying radius and a short circumferentially and radially extending switch resetting means of non-constantly varying radius disposed intermediate the portions of largest and smallest radius on said substantial circumferentially elongated portion said last named means being operable to reset a switch contact assembly subsequent to actuation thereof; c. means operable to rotate said shaft; d. at least one spring switch contact assembly having a normal deactuated position, and an actuated position, and including a cam follower in engagement with the peripheral surface of said cam, said cam follower being operable to actuate said switch contact assembly at a predetermined radial position of said cam and said shaft and to reset and deactuate said switch contact assembly by said resetting means causing said switch contact assembly to move past its normal deactuated position before allowing the switch contact assembly to assume its normal deactuated position in response to engagement with said switch resetting means whereby said switch contact assembly may be successively, repeatably actuated at the same angular position of said shaft and said cam as rotation thereof is effected.
Claim 3
Dependent Claim
27 words
The apparatus of claim 1 in which the resetting means includes a portion having a radius that is larger than the largest radius of the cam means.
Claim 4
Dependent Claim
27 words
The apparatus of claim 1 in which the resetting means includes a portion having a radius that is smaller than the smallest radius of the cam means.
Claim 5
Dependent Claim
15 words
The apparatus of claim 1 in which the shaft is operable at a constant velocity.
Claim 6
Dependent Claim
15 words
The apparatus of claim 2 in which the shaft is operable at a constant velocity.
Claim 7
Dependent Claim
15 words
The apparatus of claim 3 in which the shaft is operable at a constant velocity.
Claim 8
Dependent Claim
24 words
The apparatus of claim 1 in which the means operable to rotate the shaft includes means for rotating said shaft for one revolution only.
Claim 9
Dependent Claim
24 words
The apparatus of claim 2 in which the means operable to rotate the shaft includes means for rotating said shaft for one revolution only.
Claim 10
Dependent Claim
24 words
The apparatus of claim 3 in which the means operable to rotate the shaft includes means for rotating said shaft for one revolution only.
Claim 11
Dependent Claim
22 words
The apparatus of claim 1 in which the switch contact assembly and cam follower are adjustable circumferentially of the shaft and cam.
Claim 12
Dependent Claim
24 words
The apparatus of claim 1 in which the switch contact assembly and the cam follower are adjustable radially of said shaft and said cam.
Claim 13
Dependent Claim
31 words
The apparatus of claim 11 in which the switch contact assembly and the cam follower are rotatably adjustable about an axis parallel to the axis of the shaft and the cam.
Claim 14
Dependent Claim
20 words
The apparatus of claim 1 in which the shaft and the switch contact assembly are disposed on a base member.
Claim 15
Dependent Claim
19 words
The apparatus of claim 13 in which the switch contact assembly is disposed in a further removable base member.
Claim 16
Dependent Claim
31 words
The apparatus of claim 14 in which the further base includes a groove and the base member includes a slot adapted to receive the grooved portion of said further base member.
Claim 17
Dependent Claim
34 words
The subject matter of claim 14 in which the switch contact assembly is rotatably disposed within the further base member and the further base member includes means for rotatably adjusting said switch contact assembly.
Claim 18
Dependent Claim
42 words
The apparatus of claim 16 in which spring biasing means are disposed between the switch contact assembly and one wall of the further base and adjusting means extend through another wall of the further base into engagement with the switch contact assembly.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |