US3610847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timing apparatus
Assignee: AUTOMATIC TIMING & CONTROLS COMPANY Inc
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Filing: 1969-07-28
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Granted: 1971-10-05
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Expires: 1989-07-28
Abstract
Abstract A subtracting timer is shown in which there are a plurality of coaxial wheels having digital indicia thereupon. The wheels have associated cardioid cams associated with them which may be set before a timing interval by externally accessible setting pushbuttons, to any desired rotary position relative to the wheels. At the beginning of a timing interval a solenoid moves an assembly which actuates a load switch and also includes clutch means for transmitting rotary power from an appropriate source to the digit wheels and also includes means for enabling ''''carries'''' to be effected between adjacent digit wheels. During the timing interval, the setting of any digit wheel may be changed by pressing an override button and simultaneously pressing appropriate ones of the setting buttons, this all being done while the originally actuated load switch remains unaffected. The original movement of the assembly causes a plurality of cam-following rollers to be moved into contact with respective cam surfaces on the wheels. Only when the rollers simultaneously engage corresponding recesses in the cam surface does their resultant movement unlatch the arm of a second switch which turns the power source off whereupon the timer reverts to its reset state.
Inventors
- 👤 Grover K Houpt
- 👤 Franklin W Kerfoot Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:09
CPC Classifications
G; G04; G04F; G04F3/00; G04F3/06; G06; G06M; G06M1/00; G06M1/28; G06M1/283; G06M1/30; G06M1/32; G06M1/323; G06M3/00; G06M3/02; G06M3/021; G06M3/022
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
244 words
Apparatus comprising: a. a predetermined number of rotary members having a portion bearing indicia thereupon and having respective detent portions, said members including means for enabling said detent portions and said indicia-bearing portions to be adjusted into a desired mutual positional relation, b. means for causing at least one of said rotary members to rotate, c. clutch means which, when activated, enables rotary motion to be transmitted from said (b) means to said one of said rotary members, d. a plurality of reset means for automatically resetting said rotary members to the same selected position at the beginning of each cycle of operation of said apparatus, said reset means moving in unison with movement of said clutch means for respectively engaging said associated detent portions when said clutch means is not transmitting motion from said (b) means to said one rotary member, e. a plurality of setting means respectively associated with said rotary members for adjusting the respective positions of said associated indicia-bearing portions relative to the positions of the respective detent portions when said reset means engage said detent portions, f. means including switch actuating means coupled to said rotary members from the beginning of an operating cycle for detecting the occurrence of a predetermined coincident position of said rotary members and moving in response thereto, and g. switch means coupled to said switch-actuating means and arranged to change condition upon the movement of said (f) means when said coincident position is detected.
Claim 2
Dependent Claim
244 words
Apparatus comprising: a. a predetermined number of rotary members having a portion bearing indicia thereupon and having respective detent portions, said members including means for enabling said detent portions and said indicia-bearing portions to be adjusted into a desired mutual positional relation, b. means for causing at least one of said rotary members to rotate, c. clutch means which, when activated, enables rotary motion to be transmitted from said (b) means to said one of said rotary members, d. a plurality of reset means for automatically resetting said rotary members to the same selected position at the beginning of each cycle of operation of said apparatus, said reset means moving in unison with movement of said clutch means for respectively engaging said associated detent portions when said clutch means is not transmitting motion from said (b) means to said one rotary member, e. a plurality of setting means respectively associated with said rotary members for adjusting the respective positions of said associated indicia-bearing portions relative to the positions of the respective detent portions when said reset means engage said detent portions, f. means including switch actuating means coupled to said rotary members from the beginning of an operating cycle for detecting the occurrence of a predetermined coincident position of said rotary members and moving in response thereto, and g. switch means coupled to said switch-actuating means and arranged to change condition upon the movement of said (f) means when said coincident position is detected.
Claim 3
Dependent Claim
31 words
The apparatus according to claim 1 with the addition of means for disabling said plurality of setting means when said plurality of reset means do not engage said first detent portions.
Claim 4
Dependent Claim
18 words
clutch means for transmitting rotary motion from a power source to at least one of said rotary members,
Claim 5
Dependent Claim
18 words
clutch means for transmitting rotary motion from a power source to at least one of said rotary members,
Claim 6
Dependent Claim
10 words
a cam-follower mounted for engagement with said cam means, and
Claim 7
Dependent Claim
10 words
a cam-follower mounted for engagement with said cam means, and
Claim 8
Dependent Claim
134 words
latching means, all of said components of said second assembly being mounted for movement in unison, said second assembly being moved into its first position when said first assembly is in its first position and said cam means has urged said cam-follower upwards whereupon said detecting means do not engage said rotary members, said second assembly being moved into its second position when said cam means permits said cam follower to move downward thereby enabling said detecting means to engage respective ones of said rotary members and said latching means is in position to latch the switch arm of said switch, said second assembly also being moved into its third position when said detecting means simultaneously engage respective predetermined portions of said rotary members whereupon said latching means moves to unlatch said switch arm.
Claim 9
Dependent Claim
134 words
latching means, all of said components of said second assembly being mounted for movement in unison, said second assembly being moved into its first position when said first assembly is in its first position and said cam means has urged said cam-follower upwards whereupon said detecting means do not engage said rotary members, said second assembly being moved into its second position when said cam means permits said cam follower to move downward thereby enabling said detecting means to engage respective ones of said rotary members and said latching means is in position to latch the switch arm of said switch, said second assembly also being moved into its third position when said detecting means simultaneously engage respective predetermined portions of said rotary members whereupon said latching means moves to unlatch said switch arm.
Claim 10
Dependent Claim
5 words
a plurality of gear means,
Claim 11
Dependent Claim
5 words
a plurality of gear means,
Claim 12
Dependent Claim
51 words
The apparatus according to claim 2 with the addition of (i) means for inactivating said clutch means and said disabling means and causing said reset means to engage said first detent portions during a timing cycle to enable said setting means to adjust the setting of any of said rotary members.
Claim 13
Dependent Claim
37 words
The apparatus according to claim 1 with the addition of second switch means and means for actuating said clutch means, said last-named means including means for actuating said second switch means when said clutch means is actuated.
Claim 14
Dependent Claim
3 words
cam means and
Claim 15
Dependent Claim
3 words
cam means and
Claim 16
Dependent Claim
134 words
switch-actuating means, all of the means of said first assembly being mounted for movement in unison, said first assembly when moved into said first position being such that said plurality of rotary position setting means engage said rotary members and said dutch and said plurality of gear means are disengaged from said rotary members whereas said switch-actuating means is in position to actuate a switch to a first condition, said first assembly when disposed in said second position causing said plurality of rotary position setting means to be disengaged from said rotary members and said clutch and gear means to engage said rotary members and said switch-actuating means is not in a position to cause said switch to be actuated, c. a second assembly movable to at least first and second positions which includes
Claim 17
Dependent Claim
134 words
switch-actuating means, all of the means of said first assembly being mounted for movement in unison, said first assembly when moved into said first position being such that said plurality of rotary position setting means engage said rotary members and said dutch and said plurality of gear means are disengaged from said rotary members whereas said switch-actuating means is in position to actuate a switch to a first condition, said first assembly when disposed in said second position causing said plurality of rotary position setting means to be disengaged from said rotary members and said clutch and gear means to engage said rotary members and said switch-actuating means is not in a position to cause said switch to be actuated, c. a second assembly movable to at least first and second positions which includes
Claim 18
Dependent Claim
30 words
The apparatus according to claim 4 wherein said means for actuating said clutch means includes means for enabling said clutch means to be inactivated without inactivating said second switch means.
Claim 19
Dependent Claim
50 words
The apparatus according to claim 5 wherein said means for enabling said clutch means to be inactivated without inactivating said second switch means includes linkage means coupled to said clutch means and having a yieldable link therein, said yieldable link being normally biased by a spring to a first position.
Claim 20
Dependent Claim
35 words
Timing apparatus comprising: a. a plurality of rotary members bearing digital indicia thereupon, said members being settable to respective predetermined rotary positions, b. a first assembly movable to first and second positions, said assembly including
Claim 21
Dependent Claim
35 words
Timing apparatus comprising: a. a plurality of rotary members bearing digital indicia thereupon, said members being settable to respective predetermined rotary positions, b. a first assembly movable to first and second positions, said assembly including
References Cited (Backward Citations)
US2799740A
Cited
US3061191A
Cited
US3257535A
Cited
US3456123A
Cited
US3441210A
Cited
US3453420A
Cited
US3499127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |