US3720126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die test stand
Assignee: Tension Envelope Corp
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Filing: 1970-12-11
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Granted: 1973-03-13
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Expires: 1990-12-11
Abstract
Abstract Dies for cutting windows in envelope blanks are set up on mounting sleeves to permit rapid placement in an envelope making machine without substantial machine down-time through use of a test stand having a mounting shaft and back-up roller simulating that of the machine. The mounting shaft is accurately adjustable in distance from a back-up roller and the back-up roller is selectively adaptable to rotate in synchronization with the mounting shaft or remain stationary depending upon the type of envelope machine to be simulated.
Inventors
- 👤 R Kranz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:32
CPC Classifications
B; B31; B31B; B31B50/00; B31B70/00; B31B70/74; B31B70/81; B31B70/82; B31B70/83; B31B50/74; B31B50/81; B31B50/82; B31B50/83; Y; Y10; Y10S; Y10S83/00; Y10S83/911; Y10T; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/483; Y10T83/4833; Y10T83/4838
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
122 words
A test stand for envelope blank cutting dies comprising: a. a rigid frame having spaced apart side walls, b. a collar shaft revolvably mounted on and extending between said side walls and adapted to receive a die mounting collar thereon, c. a back-up shaft extending parallel to said collar shaft and extending between and revolvably mounted on said side walls adjacent said collar shaft. d. a gear revolvably fixed to each of said shafts and adapted to mesh whereby said shafts revolve in opposite directions simultaneously, e. means for revolving said collar shaft, and f. means for disengaging one of said gears from the other and locking said back-up shaft revolvably whereupon said back up shaft is convertible to a stationary anvil.
Claim 2
Dependent Claim
122 words
A test stand for envelope blank cutting dies comprising: a. a rigid frame having spaced apart side walls, b. a collar shaft revolvably mounted on and extending between said side walls and adapted to receive a die mounting collar thereon, c. a back-up shaft extending parallel to said collar shaft and extending between and revolvably mounted on said side walls adjacent said collar shaft. d. a gear revolvably fixed to each of said shafts and adapted to mesh whereby said shafts revolve in opposite directions simultaneously, e. means for revolving said collar shaft, and f. means for disengaging one of said gears from the other and locking said back-up shaft revolvably whereupon said back up shaft is convertible to a stationary anvil.
Claim 3
Dependent Claim
122 words
A test stand for envelope blank cutting dies comprising: a. a rigid frame having spaced apart side walls, b. a collar shaft revolvably mounted on and extending between said side walls and adapted to receive a die mounting collar thereon, c. a back-up shaft extending parallel to said collar shaft and extending between and revolvably mounted on said side walls adjacent said collar shaft. d. a gear revolvably fixed to each of said shafts and adapted to mesh whereby said shafts revolve in opposite directions simultaneously, e. means for revolving said collar shaft, and f. means for disengaging one of said gears from the other and locking said back-up shaft revolvably whereupon said back up shaft is convertible to a stationary anvil.
Claim 4
Dependent Claim
122 words
A test stand for envelope blank cutting dies comprising: a. a rigid frame having spaced apart side walls, b. a collar shaft revolvably mounted on and extending between said side walls and adapted to receive a die mounting collar thereon, c. a back-up shaft extending parallel to said collar shaft and extending between and revolvably mounted on said side walls adjacent said collar shaft. d. a gear revolvably fixed to each of said shafts and adapted to mesh whereby said shafts revolve in opposite directions simultaneously, e. means for revolving said collar shaft, and f. means for disengaging one of said gears from the other and locking said back-up shaft revolvably whereupon said back up shaft is convertible to a stationary anvil.
Claim 5
Dependent Claim
32 words
The structure as set forth in claim 1 wherein: a. said means for disengaging said gears includes an axial sliding arrangement between the gear on said back-up shaft and said back-up shaft.
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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |