US3700837A - Adjustable timer cam assembly spring biased by contacts for normal engagement with synchronous motor driven gear - Google Patents
Adjustable timer cam assembly spring biased by contacts for normal engagement with synchronous motor driven gear Download PDFInfo
- Publication number
- US3700837A US3700837A US159615A US3700837DA US3700837A US 3700837 A US3700837 A US 3700837A US 159615 A US159615 A US 159615A US 3700837D A US3700837D A US 3700837DA US 3700837 A US3700837 A US 3700837A
- Authority
- US
- United States
- Prior art keywords
- rotor
- time switch
- cam
- accordance
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
- H01H43/10—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to a part rotating at substantially constant speed
- H01H43/12—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to a part rotating at substantially constant speed stopping automatically after a single cycle of operation
- H01H43/125—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to a part rotating at substantially constant speed stopping automatically after a single cycle of operation using a cam
Definitions
- ABSTRACT A time switch having a rotor of unitary construction mounted at its ends in slots and having a meshed gear connection with drive means. Switch means providing a biasing force to said rotor for maintaining the meshed gear connection and said rotor being adapted for manual rotation relative to said drive means and against the biasing force causing its ends to move in said slots and said gears providing the drive connection to move out of mesh.
- Time switches of this general type as shown in US. Pat. No. 3,391,258 granted to RR. Virnoche, .lr., and assigned to the same assignee as is the present application, are particularly adapted for use as refrigerator controls. It should be understood, however, there is no intent to limit the present invention to such a single envlronment.
- a time switch is relatively uncomplicated.
- a switch operating cam is provided with a gear which is driven by the output gear of a synchronous motor.
- the time switch will startto operate when its motor is energized, and will continue to repetatively operate in accordance with its time cycle.
- an object of the present invention is to provide an improved construction for time switches of the type described.
- Another object of the present invention is to reduce the number of parts and to improve the reliability of the foregoing time switches.
- the present invention contemplates a time switch having a motor driven unitary rotor mounted at its ends in slots.
- the rotor has a switch means actuating cam and a drive gear releasably retained in mesh with a motor output gear by a spring bias provided by the switch means.
- FIG. 1 is a elevational view of a time switch made in accordance with the present invention, with most of the cover broken away to expose the internal operating mechanism thereof;
- FIG. 2 is a view similar to FIG. 1 with the terminal end of the time switch removed and the drive connection between the motor and rotor disengaged;
- FIG. 3 is an end elevational view of the time switch of FIG. 1 with a portion of the case broken away.
- a time switch made in accordance with the present invention is provided with a case having a side wall 11 and a continuous peripheral wall or flange l3 defining a switch chamber with an open side closed by a cover 15.
- a portion 14 of the peripheral flange 13 at one end of the case 10 is of a slotted double wall configuration.
- the wall 11 and cover 15 are provided with axially aligned slots 12 and 16, respectively, disposed toward the other end of the case 10 opposite from the double walled flange portion 14.
- a synchronous motor 18 is mounted on the outside of the case 10 and has an output shaft and gear arrangement 19 which extends into the switch chamber through an opening in the wall 1 1.
- the time switch is provided with switch means 20 comprising three spring contact arms 21, 22-and 23 each having a terminal end portion which extends through one of the slots of the double walled flange portion 14, and is supported thereby.
- a spacer 24 is provided at the other end of the switch means 20 to limit the minimum closure between the free contact ends of the two outer arms 21 and 23.
- the common contact arm 22 is disposed between and is longer at its free contact end than the arms 21 and 23.
- the rotor 30 of the time switch has three distinct portions, namely, a single lobe cam 31 for actuating the switch means 20, a shaft 32 mounted at its ends in the slots 12 and 16, and a gear 33 which meshes with the output gear 19 to provide a rotor driving connection. While the cam 31 and gear 33 may be made as separate parts and fixedly mounted on the shaft 32, the rotor 30 preferably may be molded as a single piece.
- the mesh of gears 19 and 33 and the contact area between the cam 31 and the spring contact blade 21 or blades 21 and 22 are substantially diametrically opposite to one another or on opposite sides of the axis of the rotor 30. All of the blades 21, 22 and 23 of the switch means 20 are always deflected out of their normal planes and exert a biasing force urging the gear 33 into mesh with gear 19 and the ends of the shaft 32 toward the upper ends of the slots 12 and 16, as shown in FIG. 1.
- both shaft ends 32 movable in slots as is hereinbefore described.
- one of the slots 12 or 16 may be merely a circular opening.
- the opening 12 in the wall 11 which is closer to the gear 33 would be elongated to form a slot while the opening 16 in the cover 15 would be circular.
- a rotor disposed between said wall portions and having a drive gear, a cam, and shaft portions at its ends rotatably disposed in said openings;
- drive means including an output gear in mesh with said drive gear for rotatably driving said rotor;
- switch means engaging said cam on the side of said rotor opposite from said output gear and being actuated by said cam as it rotates;
- said switch means providing a biasing force on said rotor urging said drive gear into mesh with said output gear and said shaft portions toward corresponding sides of said openings;
- said rotor being adapted to be manually rotated relative to said output gear and against the bias of said switch means causing one of said shaft portions to move along the length of said slot and said drive gear to move out of mesh with said output gear.
- both of said openings being elongated to form slots thereby permitting both of said shaft portions to move along the lengths of said slots when said drive gear moves out of mesh with said output gear.
- said switch means comprising:
- said rotor being of a unitary construction.
- said switch means comprising:
Landscapes
- Measurement Of Predetermined Time Intervals (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Electromechanical Clocks (AREA)
Abstract
Description
Claims (8)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15961571A | 1971-07-06 | 1971-07-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3700837A true US3700837A (en) | 1972-10-24 |
Family
ID=22573277
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US159615A Expired - Lifetime US3700837A (en) | 1971-07-06 | 1971-07-06 | Adjustable timer cam assembly spring biased by contacts for normal engagement with synchronous motor driven gear |
Country Status (2)
Country | Link |
---|---|
US (1) | US3700837A (en) |
CA (1) | CA942363A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4203014A (en) * | 1978-05-19 | 1980-05-13 | Deltrol Corp. | Adjustable interval cycle timer |
US4415784A (en) * | 1981-09-11 | 1983-11-15 | The Singer Company | Timer with delayed start capability |
US4485281A (en) * | 1983-03-02 | 1984-11-27 | Emhart Industries, Inc. | Push to start timing mechanism |
US4524252A (en) * | 1981-10-19 | 1985-06-18 | Omron Tateisi Electronics Co. | Motor-driven electric timer |
US5834718A (en) * | 1997-03-03 | 1998-11-10 | Emerson Electric Co. | Appliance timer having a switching mechanism for high-current carrying circuit blades and associated method |
CN103681106A (en) * | 2012-09-11 | 2014-03-26 | 化迈 | Timing control device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3260807A (en) * | 1963-12-23 | 1966-07-12 | American Mach & Foundry | Automatic and manual time switch |
US3500005A (en) * | 1967-10-04 | 1970-03-10 | Mallory & Co Inc P R | Variable circuit timer |
-
1971
- 1971-07-06 US US159615A patent/US3700837A/en not_active Expired - Lifetime
-
1972
- 1972-03-15 CA CA137,207A patent/CA942363A/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3260807A (en) * | 1963-12-23 | 1966-07-12 | American Mach & Foundry | Automatic and manual time switch |
US3500005A (en) * | 1967-10-04 | 1970-03-10 | Mallory & Co Inc P R | Variable circuit timer |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4203014A (en) * | 1978-05-19 | 1980-05-13 | Deltrol Corp. | Adjustable interval cycle timer |
US4415784A (en) * | 1981-09-11 | 1983-11-15 | The Singer Company | Timer with delayed start capability |
US4524252A (en) * | 1981-10-19 | 1985-06-18 | Omron Tateisi Electronics Co. | Motor-driven electric timer |
US4485281A (en) * | 1983-03-02 | 1984-11-27 | Emhart Industries, Inc. | Push to start timing mechanism |
US5834718A (en) * | 1997-03-03 | 1998-11-10 | Emerson Electric Co. | Appliance timer having a switching mechanism for high-current carrying circuit blades and associated method |
CN103681106A (en) * | 2012-09-11 | 2014-03-26 | 化迈 | Timing control device |
CN103681106B (en) * | 2012-09-11 | 2017-03-15 | 李西京 | Timing control apparatus |
Also Published As
Publication number | Publication date |
---|---|
CA942363A (en) | 1974-02-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: PARAGON ELECTRIC COMPANY, INC., 606 PARKWAY BLVD., Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMF INCORPORATED, A NJ CORP.;REEL/FRAME:004484/0357 Effective date: 19851112 |
|
AS | Assignment |
Owner name: STATE OF WISCONSIN INVESTMENT BOARD, WISCONSIN Free format text: SECURITY INTEREST;ASSIGNOR:PARAGON ELECTRIC COMPANY, INC. (FORMERLY KNOWN AS PECO-TOW RIVERS, INC.);REEL/FRAME:004546/0955 Effective date: 19860319 Owner name: STATE OF WISCONSIN INVESTMENT BOARD, 121 EAST WILS Free format text: SECURITY INTEREST;ASSIGNOR:PARAGON ELECTRIC COMPANY, INC. (FORMERLY KNOWN AS PECO-TOW RIVERS, INC.);REEL/FRAME:004546/0955 Effective date: 19860319 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES) |
|
AS | Assignment |
Owner name: PARAGON ELECTRIC COMPANY, INC., WISCONSIN Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:STATE OF WISCONSIN INVESTMENT BOARD;REEL/FRAME:005463/0773 Effective date: 19900730 |
|
AS | Assignment |
Owner name: BANKERS TRUST COMPANY, NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:PARAGON ELECTRIC COMPANY, INC. A CORP. OF WISCONSIN;REEL/FRAME:005758/0169 Effective date: 19900730 |