US3758003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot melt liquefying and pumping mechanism
Assignee: Aro Corp
•
Filing: 1971-12-20
•
Granted: 1973-09-11
•
Expires: 1991-12-20
Abstract
Abstract A mechanism for melting and discharging hot melt material from a barrel includes a hot plate which fits through the top of the barrel and melts the hot melt material adjacent the bottom side of the plate. A pump operates to draw the melted hot melt material from the region between the plate and the unmelted material for discharge through a flexible hose.
Inventors
- 👤 W Kautz
- 👤 D German
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:07
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/58; B67D7/62; B67D7/64; B67D7/645; B05; B05C; B05C11/00; B05C11/10; B05C11/1042; B29; B29B; B29B13/00; B29B13/02; B29B13/022; F; F04; F04B; F04B15/00; F04B15/04; F04B53/00; B29C; B29C35/00; B29C35/02; B29C2035/0211; B29K; B29K2105/00; B29K2105/0097; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6606
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
128 words
An improved mechanism for removing meltable material from a container, said container of the type having an open side, said mechanism comprising, in combination: plate means to fit in said open side of said container adjacent said material in said container; heating means in said plate means for melting at least a portion of said material adjacent the bottom of said plate means; liquid material passage means through said plate means in communication with said melted material for conveyance of said melted material; pump means for pumping melted material through said passage; and means to counterweight said plate means and other means thereon, said plate means effectively sealing said passage means from the atmosphere while simultaneously floating on said liquid as said liquid is removed from said container.
Claim 2
Dependent Claim
128 words
An improved mechanism for removing meltable material from a container, said container of the type having an open side, said mechanism comprising, in combination: plate means to fit in said open side of said container adjacent said material in said container; heating means in said plate means for melting at least a portion of said material adjacent the bottom of said plate means; liquid material passage means through said plate means in communication with said melted material for conveyance of said melted material; pump means for pumping melted material through said passage; and means to counterweight said plate means and other means thereon, said plate means effectively sealing said passage means from the atmosphere while simultaneously floating on said liquid as said liquid is removed from said container.
Claim 3
Dependent Claim
16 words
The mechanism of claim 1 wherein plate means is floating partially submersed in said melted material.
Claim 4
Dependent Claim
19 words
The mechanism of claim 1 including additional means for positioning said other means into or out of said container.
Claim 5
Dependent Claim
21 words
The mechanism of claim 1 wherein said passage includes flexible hose means extending from said pump means to melted material outlets.
Claim 6
Dependent Claim
54 words
The mechanism of claim 1 wherein said pump means is cyclic and includes means to provide a partial pressure in said passage means, said liquid material flowing into said passage to eliminate said partial pressure condition, said pump means further including means for removing liquid in said passage and re-establishing a partial pressure therein.
References Cited (Backward Citations)
US3031106A
Cited
US3130876A
Cited
US3282469A
Cited
US3456849A
Cited
US3459336A
Cited
US3412903A
Cited
US3637111A
Cited
US3478930A
Cited
US3531023A
Cited
US3662927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |