US3733699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically actuated cutting machine for rods and the like
Assignee: Individual
•
Filing: 1971-05-19
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Granted: 1973-05-22
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Expires: 1991-05-19
Abstract
Abstract A hydraulically actuated cutting machine for cutting round steel rods and the like having a stationary cutting member which coacts with a movable cutting member. A pump body has a shaft to which there is operatively connected a pumping member which pumps hydraulic fluid from the pump body into an adjoining cylindrical member. A piston, having a piston rod eccentrically extending therefrom, is slidably mounted in this cylindrical member. The piston rod terminates at the aforementioned movable cutting member. A cutting mouth housing is formed with an open recess, one wall of which faces the movable cutting member and forms the stationary cutting member. The housing adjoins the cylindrical member and defines a chamber which is in communication with the interior of the cylindrical member. The cylindrical member in turn is in communication with the pump body via a passage which is selectively sealed by valve means which coact with the piston.
Inventors
- 👤 R Bock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:31
CPC Classifications
B; B26; B26B; B26B17/00; B26B17/02; B23; B23D; B23D15/00; B23D15/12; B23D15/14; B23D23/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
141 words
In a hydraulically actuated cutting machine for cutting round steel rods and the like with a movable knife coacting with a stationary knife, the improvement comprising a pump housing adapted to hold hydraulic fluid, pumping means operatively mounted in said pump housing, a substantially cylindrical housing fluid-tightly and coaxially connected to said pump housing at one of its ends, passage means communicating said pump housing and said cylindrical housing, a piston head slidably mounted in said cylindrical housing, cutting knife guide means fluid-tightly connected to said cylindrical housing at the other one of its end, and a piston rod eccentrically extending from said piston head and from the other end of said cylindrical housing and through at least a portion of said cutting knife guiding means, (comma) said piston rod being formed as a movable cutting knife at its free end.
Claim 2
Dependent Claim
141 words
In a hydraulically actuated cutting machine for cutting round steel rods and the like with a movable knife coacting with a stationary knife, the improvement comprising a pump housing adapted to hold hydraulic fluid, pumping means operatively mounted in said pump housing, a substantially cylindrical housing fluid-tightly and coaxially connected to said pump housing at one of its ends, passage means communicating said pump housing and said cylindrical housing, a piston head slidably mounted in said cylindrical housing, cutting knife guide means fluid-tightly connected to said cylindrical housing at the other one of its end, and a piston rod eccentrically extending from said piston head and from the other end of said cylindrical housing and through at least a portion of said cutting knife guiding means, (comma) said piston rod being formed as a movable cutting knife at its free end.
Claim 3
Dependent Claim
129 words
In a hydraulically actuated cutting machine for cutting round steel rods and the like with a movable knife member coacting with a stationary knife member, the improvement as set forth in claim 1, wherein said cutting knife guide means comprises a body having a first portion defining a passage through which said eccentric piston rod extends, said first portion also having a laterally open cutting mouth having a wall surface which acts as a stationary cutting knife, said movable cutting knife being adapted to reciprocate relative to said stationary cutting knife, said laterally open cutting mouth being eccentrically disposed relative to the longitudinal axis of said cutting machine, said body of said cutting knife guide means has a second hollow portion defining a displacement chamber for the hydraulic fluid.
Claim 4
Dependent Claim
80 words
In a hydraulically actuated cutting machine for cutting round steel rods and the like with a movable knife member, the improvement as Set forth in claim 1, wherein there are mounted on said piston head valve means which control the movement of said piston head in said cylindrical housing, said valve means extending into said cylindrical housing along one side of said eccentrically disposed piston rod which forms an enlarged space in said cylindrical housing due to its eccentric position.
Claim 5
Dependent Claim
59 words
In a hydraulically actuated cutting machine for cutting round steel rods and the like with a movable knife member, the improvement as set forth in claim 2, wherein there is mounted in said displacement chamber a flexible container, and venting means mounted in said second hollow portion and said flexible container for communicating the latter with the ambient atmosphere.
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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |