US3741005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet web tensile tester
Assignee: TABERT Inc
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Filing: 1971-09-28
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Granted: 1973-06-26
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Expires: 1991-09-28
Abstract
Abstract Apparatus for testing weak webs, such as wet webs of paper pulp, for tensile strength and elongation is provided having a relatively flat member for placement of a web specimen, two clamping members superimposed one above the other over the relatively flat member, the lower clamping member clamping one end of the specimen to the flat member and the other clamping member providing means to hold the other end of the specimen, a lifting arm means capable of lifting said other end of the specimen into position to be clamped over the upper clamping member. Means are provided to apply tension on the clamped specimen through the two clamping members and measure the tensile strength of the specimen web.
Inventors
- 👤 M Dauth
- 👤 U Valters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:30
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/08; G01N2203/00; G01N2203/02; G01N2203/026; G01N2203/0262; G01N2203/0278; G01N2203/0282
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
96 words
An apparatus for testing the tensile strength of relatively weak webs, which comprises a relatively flat member for placement of the web to be tested, two clamping members superimposed one above the other over said flat member, said clamping members providing means for clamping each end of the specimen web, and lifting means capable of lifting one end of the specimen web over the upper clamping member, said lifting means being rotatably connected to said apparAtus by an arm, and means for applying tension to the two clamping members and thereby to the clamped specimen web.
Claim 2
Independent Claim
96 words
An apparatus for testing the tensile strength of relatively weak webs, which comprises a relatively flat member for placement of the web to be tested, two clamping members superimposed one above the other over said flat member, said clamping members providing means for clamping each end of the specimen web, and lifting means capable of lifting one end of the specimen web over the upper clamping member, said lifting means being rotatably connected to said apparAtus by an arm, and means for applying tension to the two clamping members and thereby to the clamped specimen web.
Claim 3
Dependent Claim
14 words
An apparatus in accordance with claim 1, wherein the two clamping members are rolls.
Claim 4
Dependent Claim
28 words
An apparatus in accordance with claim 1, wherein the relatively flat member is in the form of a table with which the lower clamping member is in contact.
Claim 5
Dependent Claim
36 words
An apparatus in accordance with claim 1 wherein said lifting means comprises a rotating arm having a suction means at one end capable of lifting one end of a specimen web over the upper clamping member.
Claim 6
Dependent Claim
41 words
An apparatus in accordance with claim 1, wherein removable brackets are provided to hold the upper clamping member in place, said removable brackets being capable of holding said upper clamping member in place until tensile strength measurement is to be made.
Claim 7
Independent Claim
120 words
An apparatus for testing the tensile strength of relatively weak webs, which comprises a table for placement of the web to be tested, two rolls superimposed one above the other over said table, said lower roll providng means for clamping one end of the specimen web to said table and said upper roll being provided with clamping means to hold the other end of the specimen web, and lifting means equipped with a suction source and being capable of lifting one end of the specimen web over the upper roll for clamping and means for applying tension to the two rolls and thereby to the clamped specimen web, said lifting means being rotatably connected to said apparatus by an arm.
Claim 8
Independent Claim
120 words
An apparatus for testing the tensile strength of relatively weak webs, which comprises a table for placement of the web to be tested, two rolls superimposed one above the other over said table, said lower roll providng means for clamping one end of the specimen web to said table and said upper roll being provided with clamping means to hold the other end of the specimen web, and lifting means equipped with a suction source and being capable of lifting one end of the specimen web over the upper roll for clamping and means for applying tension to the two rolls and thereby to the clamped specimen web, said lifting means being rotatably connected to said apparatus by an arm.
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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |