US3763561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber cutter
Assignee: GLAS-CRAFT Inc
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Filing: 1972-02-22
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Granted: 1973-10-09
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Expires: 1992-02-22
Abstract
Abstract A self-adjusting fiber cutter for cutting lengths of fibers such as glass roving and the like into short lengths. The cutter section of the fiber cutter includes fluidic means for biasing roller means of the cutter section into engagement with another roller means of the cutter section to thereby compensate for wear experienced by the fiber cutter and to facilitate loading and unloading of fibers. The fiber cutter has a low start-up torque to minimize jamming of the fiber cutter at start-up. The pressure roller means of the fiber cutter is eccentrically mounted to compensate for possible inconsistencies in fabrication tolerances between several of the roller means of the fiber cutter.
Inventors
- 👤 J Scharfenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:15
CPC Classifications
D; D01; D01G; D01G1/00; D01G1/02; D01G1/04; C; C03; C03B; C03B37/00; C03B37/10; C03B37/16; Y; Y10; Y10S; Y10S83/00; Y10S83/913; Y10T; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/483; Y10T83/4838; Y10T83/4841; Y10T83/4844
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
122 words
A self-adjusting fiber cutter for use with a device for dispensing material, the fiber cutter comprising rotatable roller means including a rotatable back-up roller and rotatable cutter roller, a fluid motor to drive the rotatable roller means, means for cutting fiber in the nip into short lengths carried by the rotatable cutter roller, means for fluidically biasing one of the rotatable roller means into cooperative relationship with the other rotatable roller means to provide a nip and to adjust the cutting pressure of the nip exerted on the fiber during the operation of the fiber cutter, and means interconnecting a source of fluid under pressure with both the fluid motor and the means for fluidically biasing one of the rotatable roller means.
Claim 2
Dependent Claim
122 words
A self-adjusting fiber cutter for use with a device for dispensing material, the fiber cutter comprising rotatable roller means including a rotatable back-up roller and rotatable cutter roller, a fluid motor to drive the rotatable roller means, means for cutting fiber in the nip into short lengths carried by the rotatable cutter roller, means for fluidically biasing one of the rotatable roller means into cooperative relationship with the other rotatable roller means to provide a nip and to adjust the cutting pressure of the nip exerted on the fiber during the operation of the fiber cutter, and means interconnecting a source of fluid under pressure with both the fluid motor and the means for fluidically biasing one of the rotatable roller means.
Claim 3
Dependent Claim
21 words
The self-adjusting fiber cutter of claim 1, including pressure roller means free to rotate concentrically about an eccentrically mounted stationary shaft.
Claim 4
Dependent Claim
40 words
The self-adjusting fiber cutter of claim 1, wherein the means for fluidically biasing one of the roller means includes air cylinder means comprising movable piston means biasing the one of the roller means into engagement with the other roller means.
Claim 5
Dependent Claim
36 words
The self-adjusting fiber cutter of claim 3, wherein the movable piston means of the air cylinder means bias a shaft carrying the roller means toward the other roller means, the other roller means being fixedly positioned.
Claim 6
Dependent Claim
40 words
The self-adjusting fiber cutter of claim 4, wherein the cutter roller is rotatably driven by the fluid motor, and the back-up roller is biased into engagement with the cutter roller by the movable piston means of the air cylinder means.
Claim 7
Dependent Claim
41 words
The self-adjusting fiber cutter of claim 5, wherein the shaft of the back-up rolelr means is substantially stationary and retained in elongated slots to be movable in a plane substantially perpendicular to the axis of rotation of the cutter roller means.
Claim 8
Dependent Claim
31 words
The self-adjusting fiber cutter of claim 6, wherein the stationary shaft includes a flat portion that engages with one of the elongated slots to retain the shaft in a stationary location.
Claim 9
Dependent Claim
134 words
A fiber cutter for ejecting cut lengths of fibers into a spray of plural component material comprising a back-up roller and a cutter roller in cooperative relationship to provide a nip for the fiber to be cut, the cutter roller including means for cutting the fiber in the nip into short lengths, means to drive the back-up roller and cutter roller, means for fluidically biasing one of the rollers into engagement with the other roller to adjust the cutting pressure of the nip exerted on the fiber during operation of the cutter, said driving means and said fluidically biasing means being simultaneously operable, and a pressure roller free to rotate concentrically about an eccentrically mounted stationary shaft in cooperative relationship with the back-up roller to provide a nip for the fiber to be cut.
Claim 10
Dependent Claim
134 words
A fiber cutter for ejecting cut lengths of fibers into a spray of plural component material comprising a back-up roller and a cutter roller in cooperative relationship to provide a nip for the fiber to be cut, the cutter roller including means for cutting the fiber in the nip into short lengths, means to drive the back-up roller and cutter roller, means for fluidically biasing one of the rollers into engagement with the other roller to adjust the cutting pressure of the nip exerted on the fiber during operation of the cutter, said driving means and said fluidically biasing means being simultaneously operable, and a pressure roller free to rotate concentrically about an eccentrically mounted stationary shaft in cooperative relationship with the back-up roller to provide a nip for the fiber to be cut.
Claim 11
Dependent Claim
27 words
The cutter of claim 8, wherein the stationary shaft is adapted to be arcuately displaced to displace the pressure roller from cooperative relationship with the back-up roller.
Claim 12
Dependent Claim
24 words
The cutter of claim 9, wherein the stationary shaft includes means for fixedly retaining the stationary shaft in position during cutting of the fiber.
References Cited (Backward Citations)
US2407641A
Cited
US2719336A
Cited
US3304821A
Cited
US3491443A
Cited
US3498166A
Cited
US3508461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |