US3592118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic program timer
Assignee: Individual
•
Filing: 1970-04-20
•
Granted: 1971-07-13
•
Expires: 1990-04-20
Abstract
Abstract A photographic process timer of the dual-speed type having contacts and cooperating countercontacts and auxiliary contact and cooperating auxiliary countercontact. The contacts have a slightly larger time value than the auxiliary contact, so that the actual timing of the steps of the process is effected by the engagement of the auxiliary contact countercontact pair.
Inventors
- 👤 Werner W Buechner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:03
CPC Classifications
G; G04; G04F; G04F3/00; G04F3/02; G04F3/027; G03; G03D; G03D13/00; G03D13/007
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
370 words
A program timer for the timing of a multistep photographic treating process comprising treating steps A and drainage steps B, the latter being all of the same length, which timer comprises at least one carrier on which are contained at least one track of a plurality of electrical contact means a spaced from each other, at least one track of at least one contact means b on the same carrier or on a separate carrier, said contact means a and contact means b being electrically insulated from each other, at least one countercontact x adapted to cooperate engagingly with said contact means a, and a countercontact y adapted to cooperate with said contact means b engagingly, driving means for bringing about intermittent engagement of said countercontact x with said contact means a and of said countercontact y with said contact means b, the latter at a rate of relative travel of at least three times as high as the rate of relative travel of countercontact x, whereby either the carriers containing the contact means a and b are movable and the countercontacts x and y are stationary or The carrier for contacts a and b are stationary and the countercontacts x and y are movable, said timer comprising furthermore an electrical power source and means for conductively connecting the said contact and countercontact means to form at least one primary circuit, which is completed when both countercontacts x and y engage their respective coordinated contact means a and b, respectively, wherein contact means a have a length, in the direction of relative travel greater than the length of said contact a calculated as the product UT.t, wherein UT is the relative rate of travel of the contact means a and the coordinated countercontact x in length units per time unit, and t is the number of time units of the drainage step B represented by the respective member, and wherein contact means b have a length, in the direction of relative travel, which is the product UT1.t, wherein UT1 is the relative rate of travel of the countercontact means y in relation to its coordinated contact means b in length units per time unit, and t has the above meaning.
Claim 2
Dependent Claim
370 words
A program timer for the timing of a multistep photographic treating process comprising treating steps A and drainage steps B, the latter being all of the same length, which timer comprises at least one carrier on which are contained at least one track of a plurality of electrical contact means a spaced from each other, at least one track of at least one contact means b on the same carrier or on a separate carrier, said contact means a and contact means b being electrically insulated from each other, at least one countercontact x adapted to cooperate engagingly with said contact means a, and a countercontact y adapted to cooperate with said contact means b engagingly, driving means for bringing about intermittent engagement of said countercontact x with said contact means a and of said countercontact y with said contact means b, the latter at a rate of relative travel of at least three times as high as the rate of relative travel of countercontact x, whereby either the carriers containing the contact means a and b are movable and the countercontacts x and y are stationary or The carrier for contacts a and b are stationary and the countercontacts x and y are movable, said timer comprising furthermore an electrical power source and means for conductively connecting the said contact and countercontact means to form at least one primary circuit, which is completed when both countercontacts x and y engage their respective coordinated contact means a and b, respectively, wherein contact means a have a length, in the direction of relative travel greater than the length of said contact a calculated as the product UT.t, wherein UT is the relative rate of travel of the contact means a and the coordinated countercontact x in length units per time unit, and t is the number of time units of the drainage step B represented by the respective member, and wherein contact means b have a length, in the direction of relative travel, which is the product UT1.t, wherein UT1 is the relative rate of travel of the countercontact means y in relation to its coordinated contact means b in length units per time unit, and t has the above meaning.
Claim 3
Dependent Claim
52 words
The timer of claim 1, in which the contact a is a pin-type contact and countercontact x is a wiper blade contact cooperating therewith, so that the time of engagement of countercontact x and contact means a is longer than corresponds to the duration of the drainage step B represented by it.
Claim 4
Dependent Claim
34 words
The timer of claim 1, in which the contact means a and b are stationary and in which the countercontact means x and y travel, in successive engagement with their respective coordinated contact means.
Claim 5
Dependent Claim
94 words
The timer of claim 1, in which the carrier is a dial on which the contact means a are contact areas, arranged in at least one at least partial circle having a radius r1, and the contact means b is an arclike contact area, having a radius r2 being different from r1, and in which the countercontact x is provided on a hand S, and countercontact y is provided on a second hand T, whereby hand T travels rotatably at a rate which is at least five times higher than that of hand S.
Claim 6
Dependent Claim
17 words
The timer of claim 1, in which the carrier or carriers are exchangeable, comprising means for support
Claim 7
Dependent Claim
27 words
The timer of claim 1, in which all contacts a are wired together to form a single primary circuit comprising at least one signal source in addition.
Claim 8
Dependent Claim
20 words
The timer of claim 1, which comprises a plurality of primary circuits, each of which comprises a separate signal source.
Claim 9
Dependent Claim
29 words
The timer of claim 1, in which the tracks of contact means a and of contact means b are provided on the periphery of at least one cylindrical carrier.
Claim 10
Dependent Claim
34 words
The timer of claim 1, in which at least one of the countercontacts x and y is stationary and the carrier carrying its coordinated track of contact means is driven by said driving means.
Claim 11
Dependent Claim
36 words
The timer of claim 1, in which all the countercontacts x and y are stationary and the carriers carrying the tracks of the respective coordinated contact means a and b are driven by said driving means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |