Patent US3837054A successfully refreshed from Google Patents.
US3837054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Needle punching machine
Assignee: Individual
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Filing: 1973-02-08
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Granted: 1974-09-24
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Expires: 1993-02-08
Abstract
Abstract A pair of feed rolls are provided, which comprise a lower feed roll and an upper feed roll defining a nip with said lower feed roll. A lower perforated plate has one end adjacent to the upper portion of the periphery of said lower feed roll and is formed with a multiplicity of perforations. An upper perforated plate is disposed over said lower plate to define a space therewith and has one end adjacent to the lower portion of the periphery of said upper feed roll and is formed with perforations which are aligned with those in said lower plate. Said feed rolls are operable to feed a non-woven fiber web through said nip into said space. A plurality of blades are carried by and protrude like teeth of a comb from said one end of one of said plates toward the adjacent portion of the periphery of the adjacent one of said feed rolls. Said adjacent feed roll is formed in its periphery with annular grooves receiving said blades.
Inventors
- 👤 E Fehrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:28
CPC Classifications
D; D04; D04H; D04H18/00; D04H18/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
157 words
In a needle punching machine which comprises an upper stripper plate, a lower bed plate, the plates defining a needle punching space therebetween, a pair of superposed feed rolls being formed with peripheral annular grooves and defining a nip therebetween, an upper one of the feed rolls having a lower peripheral portion and a lower one of the feed rolls having an upper peripheral portion, each of the plates having one end facing a respective one of the feed rolls, and the feed rolls being operable to feed a non-woven fiber web through the nip into the space, the improvement of a plurality of blades carried by, and protruding like teeth of a comb from, the one end of the lower bed plate, the one lower bed plate end being adjacent the upper peripheral portion of the lower feed roll and the blades extending to, and being received in, the annular grooves of the lower bed plate.
Claim 2
Dependent Claim
157 words
In a needle punching machine which comprises an upper stripper plate, a lower bed plate, the plates defining a needle punching space therebetween, a pair of superposed feed rolls being formed with peripheral annular grooves and defining a nip therebetween, an upper one of the feed rolls having a lower peripheral portion and a lower one of the feed rolls having an upper peripheral portion, each of the plates having one end facing a respective one of the feed rolls, and the feed rolls being operable to feed a non-woven fiber web through the nip into the space, the improvement of a plurality of blades carried by, and protruding like teeth of a comb from, the one end of the lower bed plate, the one lower bed plate end being adjacent the upper peripheral portion of the lower feed roll and the blades extending to, and being received in, the annular grooves of the lower bed plate.
Claim 3
Dependent Claim
100 words
In the needle punching machine of claim 1, a plurality of blades carried by, and protruding like teeth of a comb from, the one end of the upper stripper plate, the one upper stripper plate end being adjacent the lower peripheral portion of the upper feed roll and the blades extending into, and being received in, the annular grooves of the upper stripper plate, the annular grooves in one of the feed rolls being staggered from the annular grooves in the other feed roll whereby no two of the blades carried respectively by the bed and stripper plates are superposed.
Claim 4
Dependent Claim
61 words
In the machine as set forth in claim 1, in which each of said annular grooves has a bottom, said bed plate defines a plane, and each of said blades has the basic configuration of a triangle having one side which conforms to the bottom of the groove into which the blade extends and another side which lies in said plane.
Claim 5
Dependent Claim
61 words
In the machine as set forth in claim 1, in which each of said annular grooves has a bottom, said bed plate defines a plane, and each of said blades has the basic configuration of a triangle having one side which conforms to the bottom of the groove into which the blade extends and another side which merges into said plane.
References Cited (Backward Citations)
US3621540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |