Patent US3880328A successfully refreshed from Google Patents.
US3880328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for squeezing tubes of paste
Assignee: Individual
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Filing: 1973-06-04
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Granted: 1975-04-29
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Expires: 1993-06-04
Abstract
Abstract A device for squeezing the contents from tubes of paste including a mandrel about which a tube is wound to expel the contents therefrom. A frame is provided for rotatably supporting the mandrel so that the mandrel is rotated when an actuating member is rotated via drive and clutch springs which cooperates with the mandrel and the actuating member. A pressure member is supported in a position in advance of the mandrel so that when the mandrel is rotated, the tube will be pressed against the pressure member to thereby assist in squeezing the contents from the tube. Upon release of the squeezing pressure of the pressure member on the tube, the tube casing relaxes to thereby create a suction force for forcing the paste proximate the opening of the tube back into the tube.
Inventors
- 👤 George Joseph William Leeson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:23
CPC Classifications
B; B65; B65D; B65D35/00; B65D35/24; B65D35/32
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
275 words
A device for squeezing the contents from tubes of paste, including a mandrel about which, in use, a tube is wound to expel contents therefrom, means for rotatably supporting the mandrel, actuating means for rotating said mandrel, a drive spring positioned about said mandrel and having a free end fixed with respect to said actuating means, said drive spring gripping and rotating said mandrel a predetermined amount each time said actuating means is actuated, means for resetting said actuating means by returning said actuating means and said drive spring to their original positions after said actuating means is released, a holding spring also positioned about said mandrel and having a free end fixed with respect to said means for rotatably supporting said mandrel, said holding spring gripping said mandrel to restrain the mandrel against movement while said actuating means and said drive spring are being returned to their original positions, and a pressure member having a curved surface at the point of engagement with the tube being supported at a position in advance of the mandrel wherein upon rotation of said mandrel to wind said tube thereabout the tube will be brought into pressure engagement with said pressure member but upon cessation of said rotation of said mandrel the tube is free to tend to move away from pressure engagement with the pressure member and the tube casing is free to relax to allow creation of a pressure lower than atmospheric pressure in said tube wherein a portion of the paste at the opening of said tube is forced back into said tube under the action of the higher atmospheric pressure externally of said tube.
Claim 2
Independent Claim
275 words
A device for squeezing the contents from tubes of paste, including a mandrel about which, in use, a tube is wound to expel contents therefrom, means for rotatably supporting the mandrel, actuating means for rotating said mandrel, a drive spring positioned about said mandrel and having a free end fixed with respect to said actuating means, said drive spring gripping and rotating said mandrel a predetermined amount each time said actuating means is actuated, means for resetting said actuating means by returning said actuating means and said drive spring to their original positions after said actuating means is released, a holding spring also positioned about said mandrel and having a free end fixed with respect to said means for rotatably supporting said mandrel, said holding spring gripping said mandrel to restrain the mandrel against movement while said actuating means and said drive spring are being returned to their original positions, and a pressure member having a curved surface at the point of engagement with the tube being supported at a position in advance of the mandrel wherein upon rotation of said mandrel to wind said tube thereabout the tube will be brought into pressure engagement with said pressure member but upon cessation of said rotation of said mandrel the tube is free to tend to move away from pressure engagement with the pressure member and the tube casing is free to relax to allow creation of a pressure lower than atmospheric pressure in said tube wherein a portion of the paste at the opening of said tube is forced back into said tube under the action of the higher atmospheric pressure externally of said tube.
Claim 3
Dependent Claim
37 words
The device of claim 1 wherein said resetting means includes a return spring having one end secured to said actuating menas and having a second end fixed with respect to said means for rotatably supporting said mandrel.
Claim 4
Dependent Claim
34 words
The device of claim 2 further comprising stop means cooperating with said actuating means for limiting the amount of movement of said actuating means and thus the amount of rotation transmitted to said mandrel.
Claim 5
Dependent Claim
53 words
The device of claim 3 wherein said stop means is a lug fixed with respect to said supporting means and wherein said actuating means includes a slot of predetermined length adapted to receive said lug, the movement of said actuating means being limited by the walls of said slot impinging upon said lug.
Claim 6
Dependent Claim
86 words
A device as claimed in claim 1, wherein the means supporting said mandrel includes a pair of upstanding support walls spaced apart from each other interconnected by a bridging portion which bridging portion includes provision for attaching the device to a flat surface, and wherein said support walls include holes therethrough for supporting said mandrel at a pair of spaced positions adjacent opposed ends thereof, and wherein said mandrel is adapted to be slid axially into position in said support walls to be releasably retained therein.
Claim 7
Dependent Claim
41 words
A device as claimed in claim 5, wherein the mandrel is releasably retained by means of a resilient tab on the end of said mandrel remote from said actuating means which cooperates with one of said holes in said support walls.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |