Patent US4640411A successfully refreshed from Google Patents.
Patent US3904138A successfully refreshed from Google Patents.
US3904138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holding device for knife sets in a shredding device
Assignee: Maschinenfabrik B Maier KG
•
Filing: 1974-04-11
•
Granted: 1975-09-09
•
Expires: 1994-04-11
Abstract
Abstract In a knife cage assembly, a drum-shaped knife cage, a multiplicity of knife crosspieces disposed on the periphery of the drum-shaped knife cage and having respective knife support surfaces, extending in axial direction of the drum-shaped knife cage and disposed at an acute angle to a radial plane through the drum-shaped knife cage, a knife set including a knife holder plate and a shredding knife held thereby supported on one of the knife support surfaces, the knife holder plate having a surface facing away from the knife, a tensioning bar diposed on the surface of the knife holder plate and extending in longitudinal direction of the knife, the tensioning bar being fastened at both ends thereof to the knife holder plate and being braced at least at a central region thereof against the knife holder plate.
Inventors
- 👤 Gerhard Maier
- 👤 Hans-Joachim Mruck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:59
CPC Classifications
B; B27; B27L; B27L11/00; B27L11/005; Y; Y10; Y10T; Y10T83/00; Y10T83/485; Y10T83/494; Y10T83/501; Y10T83/929; Y10T83/9457; Y10T83/9464
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
135 words
In a knife cage assembly, a drum-shaped knife cage, a multiplicity of knife crosspieces disposed on the periphery of said drum-shaped knife cage and having respective knife support surfaces extending in axial direction of said drum-shaped knife cage and disposed at an acute angle to a radial plane through said drum-shaped knife cage, a knife set comprising a knife holder plate and a shredding knife held thereby supported on one of said knife support surfaces, said knife holder plate having a surface facing away from said knife, a tensioning bar disposed on said surface of said knife plate and extending in longitudinal direction of said knife, said tensioning bar being fastened at both ends thereof to said knife holder plate and being braced at least at a central region thereof against said knife holder plate.
Claim 2
Dependent Claim
135 words
In a knife cage assembly, a drum-shaped knife cage, a multiplicity of knife crosspieces disposed on the periphery of said drum-shaped knife cage and having respective knife support surfaces extending in axial direction of said drum-shaped knife cage and disposed at an acute angle to a radial plane through said drum-shaped knife cage, a knife set comprising a knife holder plate and a shredding knife held thereby supported on one of said knife support surfaces, said knife holder plate having a surface facing away from said knife, a tensioning bar disposed on said surface of said knife plate and extending in longitudinal direction of said knife, said tensioning bar being fastened at both ends thereof to said knife holder plate and being braced at least at a central region thereof against said knife holder plate.
Claim 3
Dependent Claim
31 words
Knife holder device according to claim 1 including a lifting screw carried by said tensioning bar between the two ends thereof for bracing said tensioning bar against said knife holder plate.
Claim 4
Dependent Claim
21 words
Knife holder device according to claim 2 wherein said lifting screw is located at a central region of said tensioning bar.
Claim 5
Dependent Claim
33 words
Knife holder device according to claim 1 wherein said tensioning bar has a rectangular cross section and is disposed in a plane extending perpendicularly to the direction of application of the tensioning force.
Claim 6
Dependent Claim
23 words
Knife holder device according to claim 1 wherein said tensioning bar is received in a corresponding recess formed in said knife holder plate.
Claim 7
Dependent Claim
43 words
Knife holder device according to claim 1, wherein said tensioning bar is screwed at both ends thereof to said knife holder plate by a respective screw fastener, and a pressure-applying bump disposed on one of said tensioning bar and said knife holder plate.
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) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |