US3669075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic egg turner for incubator
Assignee: Individual
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Filing: 1970-12-17
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Granted: 1972-06-13
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Expires: 1990-12-17
Abstract
Abstract An incubator egg turner having a drive motor which drives an output shaft having a cam thereon which moves a first single pole double throw switch between a first position when the cam is in one 180* portion of its rotation and a second position when the cam is in the other 180* of rotation, a timer motor which drives a cam which moves a second switch to alternately connect said drive motor to electrical power through said first switch to rotate said output shaft 180* at a time, and there being provided on said output shaft a crank arm which is connected to the egg grid of an incubator to move said grid from one position to another each time the output shaft is rotated 180*, and including a test circuit which can selectively connect electrical power to the drive motor no matter what is the position of said first mentioned cam, and anchor rods rigidly connected to the turner by which the turner can be removably anchored to the incubator.
Inventors
- 👤 Albert F Marsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:24
CPC Classifications
A; A01; A01K; A01K41/00; A01K41/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
235 words
An automatic egg turner for an incubator having an egg grid therein with eggs which are turned each time the grid is moved between a first and a second position, said egg turner comprising: an output shaft adapted to be operatively connected to said egg grid to move said grid from its first position to its second position each time the output shaft is rotated from a first position to a second position; motor means for rotating said output shaft from said first position to said second position; first switch means operatively connected to said output shaft and said motor means for turning said motor means off when said output shaft reaches said second position, said switch means being responsive to the position of the egg grid through the position of the output shaft, said switch means having a first and a second position; second switch means movable between a first and a second position, said second switch means connecting power to said motor means when said first switch means is in said first position and said second switch means is in said first position and connecting power to said motor means when said first switch means is in said second position and said second switch means is in said second position, but not when one of said switches is in its first position and the other of said switches is in its second position.
Claim 2
Dependent Claim
235 words
An automatic egg turner for an incubator having an egg grid therein with eggs which are turned each time the grid is moved between a first and a second position, said egg turner comprising: an output shaft adapted to be operatively connected to said egg grid to move said grid from its first position to its second position each time the output shaft is rotated from a first position to a second position; motor means for rotating said output shaft from said first position to said second position; first switch means operatively connected to said output shaft and said motor means for turning said motor means off when said output shaft reaches said second position, said switch means being responsive to the position of the egg grid through the position of the output shaft, said switch means having a first and a second position; second switch means movable between a first and a second position, said second switch means connecting power to said motor means when said first switch means is in said first position and said second switch means is in said first position and connecting power to said motor means when said first switch means is in said second position and said second switch means is in said second position, but not when one of said switches is in its first position and the other of said switches is in its second position.
Claim 3
Dependent Claim
39 words
The turner set forth in claim 1 including: test circuit means for selectively connecting power to said motor means no matter which of said two positions said first switch means is in when said test circuit means is closed.
Claim 4
Dependent Claim
66 words
The turner set forth in claim 2 wherein said first switch means is connected so that if said test circuit means supplies power to said motor means for a time and then said test circuit means is opened after the output shaft reaches its second position, said first switch means will keep supplying power to said motor means until said output shaft reaches said first position.
Claim 5
Dependent Claim
24 words
The turner set forth in claim 1 including: means for successively moving said second switch means between said first and second positions at intervals.
Claim 6
Dependent Claim
56 words
The turner set forth in claim 1 including: a housing surrounding said motor means and said first and second switch means; means for connecting power into said housing to said second switch means; a female receptacle in said housing adapted to receive a male plug of a cord leading to a heat source in the incubator.
Claim 7
Dependent Claim
54 words
The turner set forth in claim 1 wherein said first and second positions of said output shaft are 180* apart and including: a crank arm extending at a right angle to said output shaft, said crank arm being adapted to be connected to a connecting rod by which it is connected to said grid.
Claim 8
Dependent Claim
130 words
The turner set forth in claim 1 wherein: said first and second positions on said output shaft are 180* apart and including: an oscillating lever swingably connected to said housing at a first point on said lever for swinging movement between a first position and a second position, said lever having means at a second point thereon adapted to connect the lever to a connecting rod connected to the egg grid; and means connecting said lever to said output shaft for moving said lever between said first and second positions as said output shaft is moved between its first and second position, whereby when said output shaft is moved from its first to its second position said lever will move said egg grid from its first to its second position.
Claim 9
Dependent Claim
157 words
The turner set forth in claim 1 wherein said first switch means comprises: a single pole double throw switch having a first and a second contact with a switch arm movable between a first position in contact with said first contact and a second position in contact with said second contact; a first cam means mounted for rotation witH said output shaft, said cam means cooperating with said switch arm to cause said switch arm to be in said first position during the time that said output shaft is moving from said first position to said second position and then causing said switch arm to move to said second position upon said output shaft reaching said second position, said cam means causing said switch arm to remain in said second position while said output shaft is moved from said second position to said first position and then causing said switch arm to move to said first position.
Claim 10
Dependent Claim
111 words
The turner set forth in claim 1 wherein said incubator has a hole which opens in a first direction and including: means for connecting said turner to said incubator, said last mentioned means including: a housing enclosing said switch means; an anchor rod rigidly secured to said housing with a free end, said anchor rod having a finger portion at said free end extending at generally a right angle to said rod, said finger portion being received into said hole in said incubator, whereby said turner can be disconnected from said incubator by moving the incubator or turner to a position where said finger portion can be removed from said hole.
Claim 11
Dependent Claim
79 words
The turner set forth in claim 9 wherein said incubator has a second hole spaced from said first hole, said second hole facing in a first direction and said last mentioned means includes: a second anchor rod rigidly secured to said housing with a free end, said second anchor rod having a finger portion at said free end extending at generally a right angle to said rod, said finger portion being received into said second hole in said incubator.
References Cited (Backward Citations)
No citation records indexed.
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 |