US4014634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powder molding press
Assignee: Iwatani Corp
•
Filing: 1976-05-26
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Granted: 1977-03-29
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Expires: 1996-05-26
Abstract
Abstract A powder molding press, for compression-molding a raw powder between a pair of metal molds coupled to a pair of metal mold securing devices. At a preset spacing, the movement of the metal mold securing devices toward each other is electrically detected in order to cut off the driving means advancing the metal mold securing devices. In addition, the movement of the metal mold securing device is mechanically stopped by means of stoppers, with the result that the final position of the metal molds can be precisely regulated.
Inventors
- 👤 Masayuki Hoshino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:08
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/02; B30B11/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
220 words
A compression-molding press comprising: a machine frame; a first metal mold securing device slideably secured to said machine frame; a second metal mold securing device secured to said machine frame; a driving means for slideably advancing said first metal mold securing device towards said second metal mold securing device; a first metal mold coupled to said first metal mold securing device; a second metal mold coupled to said second metal mold securing device; stopper means, positioned between said first and second metal mold securing devices, and impinging upon one of said metal mold securing devices when said first metal mold securing device is advanced a predetermined distance toward said second metal mold securing device; detecting means positioned between said stopper means and said one of said metal mold securing devices for detecting impingement of said stopper means upon said on of said metal mold securing devices; and a means, included in said detecting means, for cutting off said driving means advancing said first metal mold securing device towards said second metal mold securing device, upon detection of impingement by said detecting means, thereby preventing a strong driving force acting on said impinging stopper means and said one of said metal mold securing devices, saving said stopper means and said one of said metal mold securing devices from breakage and deformation.
Claim 2
Dependent Claim
220 words
A compression-molding press comprising: a machine frame; a first metal mold securing device slideably secured to said machine frame; a second metal mold securing device secured to said machine frame; a driving means for slideably advancing said first metal mold securing device towards said second metal mold securing device; a first metal mold coupled to said first metal mold securing device; a second metal mold coupled to said second metal mold securing device; stopper means, positioned between said first and second metal mold securing devices, and impinging upon one of said metal mold securing devices when said first metal mold securing device is advanced a predetermined distance toward said second metal mold securing device; detecting means positioned between said stopper means and said one of said metal mold securing devices for detecting impingement of said stopper means upon said on of said metal mold securing devices; and a means, included in said detecting means, for cutting off said driving means advancing said first metal mold securing device towards said second metal mold securing device, upon detection of impingement by said detecting means, thereby preventing a strong driving force acting on said impinging stopper means and said one of said metal mold securing devices, saving said stopper means and said one of said metal mold securing devices from breakage and deformation.
Claim 3
Dependent Claim
21 words
A compression-molding press as described in claim 1 wherein said detecting means is attached to said first metal mold securing device
Claim 4
Dependent Claim
19 words
A compression-molding press as described in claim 1 wherein said stopper means is fixedly secured to said machine frame.
Claim 5
Dependent Claim
29 words
A compression-molding press as described in claim 1 wherein said detecting means electrically detects said impingement of said stopper means upon said one of said metal mold securing devices.
Claim 6
Dependent Claim
40 words
A compression-molding press as described in claim 1 wherein the diameter of the impinging surface of said stopper means and said one of said metal mold securing devices is larger than the diameter of said first and second metal molds.
Claim 7
Dependent Claim
39 words
A compression-molding press as desccribed in claim 1 wherein said stopper means is secured at a suitable location relative to said first and second metal mold securing devices and along side one of said first and second metal molds.
Claim 8
Dependent Claim
17 words
A compression-molding press as described in claim 1 wherein said stopper means includes a height adjusting means.
Claim 9
Dependent Claim
39 words
A compression-molding press as described in claim 7 wherein the height adjusting means of said stopper means includes a screw thread formed on the top part of said stopper means and regulator collar means locked on the screw threads.
Claim 10
Dependent Claim
27 words
A compression-molding press as described in claim 8 wherein the height adjusting means of said stopper means further includes a disk mounted on said regulator collar means.
Claim 11
Dependent Claim
26 words
A compression-molding press as described in claim 7 wherein said stopper means has a graduated scale means for regulating the height of said height adjusting means.
References Cited (Backward Citations)
US3160919A
Cited
US3460202A
Cited
US3857658A
Cited
US3816043A
Cited
US3868201A
Cited
US3850560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |