Patent EP0532053A2 successfully refreshed from Google Patents.
US4227199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for time-recording
Assignee: Individual
•
Filing: 1979-05-09
•
Granted: 1980-10-07
•
Expires: 1999-05-09
Abstract
Abstract A double check or safety system for recording information of two types on a record sheet, such as a time clock card. One type of information is applied automatically to a first predetermined area of the record sheet when the sheet is inserted into a machine, such as the entrance time and exit time stamped onto the record sheet by a time clock. The other type of information is applied manually by the operator, such as a signature applied by the operator to a second predetermined area of the record sheet associated with the time stamp area. The invention comprises the step of automatically wetting said second predetermined area with a color-forming chemical, either before or simultaneously with the automatic application of the said one type of information to the first predetermined area and thereafter manually applying said other type of information to said wetted area, such as by applying a written signature using a pen containing a complimentary liquid which is substantially colorless but which is reactive with said color-forming liquid, while the latter is in liquid state, to form a colored, legible reaction product in the form of an ink signature.
Inventors
- 👤 Stephen R. Sharkey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:36
CPC Classifications
G; G07; G07C; G07C1/00; G07C1/10; G07C1/12; G07C1/14; Y; Y10; Y10S; Y10S101/00; Y10S101/29
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
114 words
Method for applying written and automatically-printed indicia to a record sheet and for correlating the time period during which said different indicia must be applied to said record sheet, comprising the steps of automatically wetting a predetermined area of the record sheet with a color-permitting material which remains liquid on said sheet for a limited time period, automatically printing indicia on a predetermined area of said record sheet associated with said wetted area of said record sheet, and applying written indicia to said wetted area, while said color-permitting material is still liquid, using a substantially colorless writing liquid which is capable of developing colored written indicia in the presence of said liquid color-permitting liquid.
Claim 2
Dependent Claim
114 words
Method for applying written and automatically-printed indicia to a record sheet and for correlating the time period during which said different indicia must be applied to said record sheet, comprising the steps of automatically wetting a predetermined area of the record sheet with a color-permitting material which remains liquid on said sheet for a limited time period, automatically printing indicia on a predetermined area of said record sheet associated with said wetted area of said record sheet, and applying written indicia to said wetted area, while said color-permitting material is still liquid, using a substantially colorless writing liquid which is capable of developing colored written indicia in the presence of said liquid color-permitting liquid.
Claim 3
Dependent Claim
43 words
Method according to claim 1 in which said automatically-printed indicia is also printed onto the predetermined, wetted area of the record sheet, using a substantially-colorless printing liquid which is capable of developing colored printed indicia in the presence of said liquid color-permitting material.
Claim 4
Dependent Claim
48 words
Method according to claim 1 in which said record sheet is a time card, said printed indicia comprises time stamp indicia printed by means of a time clock and said written indicia comprises a signature written by means of a pen containing a supply of said writing liquid.
Claim 5
Dependent Claim
45 words
Method according to claim 3 in which the area of said record sheet which is wetted is automatically variable to correspond to the area of the record sheet which is to be printed, whereby rewetting of the same area after printing said indicia is prevented.
Claim 6
Independent Claim
145 words
A system for applying written indicia to a predetermined first area of a record sheet adapted to be automatically stamped with printed indicia in a predetermined second area associated with said first area and for correlating the time period during which said different indicia must be applied to said record sheet, comprising a wetting device including means for limiting the entry position of a record sheet to a predetermined variable position, means for automatically wetting a predetermined first area of said record sheet corresponding to said entry position with a color-permitting material which remains liquid on said sheet for a limited time period, said wetted area being adapted to develop colored written indicia upon the application thereto of a substantially-colorless complimentary writing liquid present within a writing instrument but being incapable of such development after a brief time period sufficient to dry said color-permitting material.
Claim 7
Independent Claim
145 words
A system for applying written indicia to a predetermined first area of a record sheet adapted to be automatically stamped with printed indicia in a predetermined second area associated with said first area and for correlating the time period during which said different indicia must be applied to said record sheet, comprising a wetting device including means for limiting the entry position of a record sheet to a predetermined variable position, means for automatically wetting a predetermined first area of said record sheet corresponding to said entry position with a color-permitting material which remains liquid on said sheet for a limited time period, said wetted area being adapted to develop colored written indicia upon the application thereto of a substantially-colorless complimentary writing liquid present within a writing instrument but being incapable of such development after a brief time period sufficient to dry said color-permitting material.
Claim 8
Dependent Claim
61 words
A system according to claim 5 in which said wetting means is adapted to wet both said first area and said second area with a color-permitting liquid, said wetted areas being adapted to develop colored written and printed indicia, respectively, upon the application thereto of substantially-colorless complimentary writing and printing liquids present within a writing instrument and a printing instrument, respectively.
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) | 1983-10-07 | 1984-04-07 | 1984-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-07 | 1988-04-07 | 1988-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-07 | 1992-04-07 | 1992-10-07 | $7700.00 | Window Closed / Lapsed |