US3886714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for making and filling sachets
Assignee: Prepac SAS
•
Filing: 1974-07-11
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Granted: 1975-06-03
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Expires: 1994-07-11
Abstract
Abstract A machine for making and filling sachets comprises a delivery pipe which is connected to a constant level reservoir and is directed downwards to permit a tubular sheath to be formed therearound. A longitudinal welding press forms at least one longitudinal seam of the sheath and a transverse welding press forms transverse seams and separates filled sachets from the sheath. The lower end of a rod extending longitudinally through the delivery pipe is fitted with a valve and cams on a rotatable camshaft respectively, control operation of the welding presses of feed rollers which feed the sheath longitudinally. A spring urges the valve to the closed position thereof and operating means controls longitudinal movement of the rod to effect opening of the valve.
Inventors
- 👤 La Poype Roland De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:45
CPC Classifications
B; B65; B65B; B65B9/00; B65B9/10; B65B9/20; B65B9/2014; B65B9/2028; B65B39/00; B65B39/001; B65B39/004; B65B9/2042; B65B9/213
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
182 words
A machine for making and filling sachets, produced from at least one strip of suitable material, comprising a frame which supports an upper reservoir, a delivery pipe extending downwards from the reservoir, at least one longitudinal welding press arranged to form a tubular sheath from the strip, sheath-feeding rollers driven rotationally and arranged to grip and feed the sheath downwardly, the said rollers being mounted on the frame below the longitudinal welding press, and a transverse welding press mounted on the frame below the rollers, wherein the upper reservoir is of known constant level kind, wherein the delivery pipe is provided at its lower end with a valve seat and a valve associated with the seat is mounted on a rod which extends longitudinally inside the pipe and is adjustable in position in the longitudinal direction in relation to the pipe and wherein a cam-shaft supported by the frame is driven rotationally by a single motor and is provided with three cams arranged respectively mechanically to control the operation of the longitudinal welding press, the sheath-feeding rollers, and the transverse welding press.
Claim 2
Dependent Claim
182 words
A machine for making and filling sachets, produced from at least one strip of suitable material, comprising a frame which supports an upper reservoir, a delivery pipe extending downwards from the reservoir, at least one longitudinal welding press arranged to form a tubular sheath from the strip, sheath-feeding rollers driven rotationally and arranged to grip and feed the sheath downwardly, the said rollers being mounted on the frame below the longitudinal welding press, and a transverse welding press mounted on the frame below the rollers, wherein the upper reservoir is of known constant level kind, wherein the delivery pipe is provided at its lower end with a valve seat and a valve associated with the seat is mounted on a rod which extends longitudinally inside the pipe and is adjustable in position in the longitudinal direction in relation to the pipe and wherein a cam-shaft supported by the frame is driven rotationally by a single motor and is provided with three cams arranged respectively mechanically to control the operation of the longitudinal welding press, the sheath-feeding rollers, and the transverse welding press.
Claim 3
Dependent Claim
182 words
A machine for making and filling sachets, produced from at least one strip of suitable material, comprising a frame which supports an upper reservoir, a delivery pipe extending downwards from the reservoir, at least one longitudinal welding press arranged to form a tubular sheath from the strip, sheath-feeding rollers driven rotationally and arranged to grip and feed the sheath downwardly, the said rollers being mounted on the frame below the longitudinal welding press, and a transverse welding press mounted on the frame below the rollers, wherein the upper reservoir is of known constant level kind, wherein the delivery pipe is provided at its lower end with a valve seat and a valve associated with the seat is mounted on a rod which extends longitudinally inside the pipe and is adjustable in position in the longitudinal direction in relation to the pipe and wherein a cam-shaft supported by the frame is driven rotationally by a single motor and is provided with three cams arranged respectively mechanically to control the operation of the longitudinal welding press, the sheath-feeding rollers, and the transverse welding press.
Claim 4
Dependent Claim
182 words
A machine for making and filling sachets, produced from at least one strip of suitable material, comprising a frame which supports an upper reservoir, a delivery pipe extending downwards from the reservoir, at least one longitudinal welding press arranged to form a tubular sheath from the strip, sheath-feeding rollers driven rotationally and arranged to grip and feed the sheath downwardly, the said rollers being mounted on the frame below the longitudinal welding press, and a transverse welding press mounted on the frame below the rollers, wherein the upper reservoir is of known constant level kind, wherein the delivery pipe is provided at its lower end with a valve seat and a valve associated with the seat is mounted on a rod which extends longitudinally inside the pipe and is adjustable in position in the longitudinal direction in relation to the pipe and wherein a cam-shaft supported by the frame is driven rotationally by a single motor and is provided with three cams arranged respectively mechanically to control the operation of the longitudinal welding press, the sheath-feeding rollers, and the transverse welding press.
Claim 5
Dependent Claim
53 words
A machine according to claim 1, wherein the delivery pipe is provided at the upper part thereof with an elbow having a horizontal branch communicating with the reservoir aNd a vertical branch extending downwards, and the rod carrying the valve being arranged to project through the elbow and out of the delivery pipe.
Claim 6
Dependent Claim
37 words
A machine according to claim 2, wherein a valve-closing spring acts on the rod and is arranged to urge the rod to move, in relation to the pipe, in the direction in which the valve is closed.
Claim 7
Dependent Claim
34 words
A machine according to claim 3, wherein the rod is associated with operating means arranged to effect longitudinal displacement of the rod in relation to the pipe against the action of the valve-closing spring.
Claim 8
Dependent Claim
48 words
A machine according to claim 4, wherein the operating means comprises a solenoid which is carried by the frame and has a movable core connected to the rod by adjustable means permitting the relative position of the core and the rod to be adjusted in the axial direction.
Claim 9
Dependent Claim
56 words
A machine according to claim 4, wherein the operating means comprises a cam pivotally mounted on the frame and arranged to be manually operated, and wherein the cam acts on an element connected to the rod by adjustable means permitting adjustment in the axial direction of the relative position of the said element and the rod.
References Cited (Backward Citations)
US1546361A
Cited
US3826061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |