US3847004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for applying pressure and die and method for forming a part
Assignee: BRINGEWALD PROCESS CORP
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Filing: 1971-03-25
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Granted: 1974-11-12
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Expires: 1991-03-25
Abstract
Abstract Apparatus including pressure means for applying pressure, work comprising a die and a blank of material adapted to be conveyed through said pressure means to force said die into said blank to form a part, means for removably securing said die to said blank whereby said die and blank may be heated separately and conveniently assembled prior to processing, said pressure means operating on said work through roller bearing means, said die comprising a plurality of die segments having cavities on the undersurface thereof, a force translating element for each of said die segments, said force translating elements being positioned to receive rolling pressure from said roller bearing means and to transfer the applied pressure to the die segments with a minimum of rocking force, said pressure means including a main pressure unit sandwiched between two auxiliary pressure units, said main pressure unit inducing a compression force into the blank of material by way of the force translating elements and the die segments to cause flow of material into said die cavities, said auxiliary pressure units inducing into the blank of material a compression force of predetermined magnitude which is sufficient to prevent flow of blank material outside the area beneath the main pressure unit thereby preventing material buildup on the trailing edge of the blank, said pressure units being provided with inwardly inclining entries for gradually applying pressure, said roller bearing means comprising rollers for converting sliding friction into rolling friction, the diameter of said rollers being dimensionally related to the thickness of said force translating and the spacing of said rollers is controlled so as to further minimize the power required to convey the work through the pressure means.
Inventors
- 👤 A Bringewald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:50
CPC Classifications
B; B21; B21K; B21K23/00; B21J; B21J13/00; B21J13/02; B21J5/00; B21J5/008; B21J5/02; B21J9/00; B21J9/02
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
117 words
The combination comprising a pressure base, pressure means vertically spaced above said pressure base to define a pressure zone, means for coveying work between said pressure base and said pressure means, one of the pressure base and said pressure means being inwardly inclined in the direction said work is conveyed so that pressure is gradually applied to said work, rollers for converting sliding friction into rolling friction as said work passes through said pressure zone, means for guiding said rollers as they pass under said pressure means, an auxiliary pressure unit adjustably mounted on said pressure means, and means for adjusting said guide means to compensate for movement between said pressure means and said auxiliary pressure unit.
Claim 2
Dependent Claim
117 words
The combination comprising a pressure base, pressure means vertically spaced above said pressure base to define a pressure zone, means for coveying work between said pressure base and said pressure means, one of the pressure base and said pressure means being inwardly inclined in the direction said work is conveyed so that pressure is gradually applied to said work, rollers for converting sliding friction into rolling friction as said work passes through said pressure zone, means for guiding said rollers as they pass under said pressure means, an auxiliary pressure unit adjustably mounted on said pressure means, and means for adjusting said guide means to compensate for movement between said pressure means and said auxiliary pressure unit.
Claim 3
Dependent Claim
76 words
The combination comprising a pressure base, pressure means vertically spaced above said pressure base to define a pressure zone, means for conveying work between said pressure base and said pressure means, one of the pressure base and said pressure means being inwardly inclined in the direction said work is conveyed so that pressure is gradually applied to said work, means for adjusting said pressure means, and means for passing said work back through said pressure means.
Claim 4
Dependent Claim
76 words
The combination comprising a pressure base, pressure means vertically spaced above said pressure base to define a pressure zone, means for conveying work between said pressure base and said pressure means, one of the pressure base and said pressure means being inwardly inclined in the direction said work is conveyed so that pressure is gradually applied to said work, means for adjusting said pressure means, and means for passing said work back through said pressure means.
Claim 5
Dependent Claim
66 words
The combination comprising a plurality of die segments, confining means for confining said die segments, a container for a blank to be formed into a part, said container including wall means for frictionally, removably receiving said confining means to allow the latter to be dropped in place whereby said work blank and said die segments can be heated separately prior to processing and then readily assembled.
Claim 6
Dependent Claim
66 words
The combination comprising a plurality of die segments, confining means for confining said die segments, a container for a blank to be formed into a part, said container including wall means for frictionally, removably receiving said confining means to allow the latter to be dropped in place whereby said work blank and said die segments can be heated separately prior to processing and then readily assembled.
Claim 7
Dependent Claim
19 words
The combination of claim 3, said container including a die underlying the blank to be formed into a part.
Claim 8
Dependent Claim
29 words
The combination of claim 3, said said confining means including wall means, adjustment means for adjusting at least a portion of said wall means to confine said die segments.
Claim 9
Dependent Claim
22 words
The combination of claim 3, said die segments including means for allowing said segments to be pried out of a formed blank.
Claim 10
Dependent Claim
24 words
The combination of claim 3, force translating elements above said die segments for minimizing the transfer of a rocking force to said die segments.
Claim 11
Dependent Claim
61 words
The combination comprising a pressure base, vertically spaced above a pressure means, means for conveying a blank across said pressure base, under said pressure means to form blank into a part auxiliary pressure means for preventing flow of material in portions of said blanK other than areas beneath said pressure means, and means for spring biasing said auziliary pressure means downwardly.
Claim 12
Dependent Claim
61 words
The combination comprising a pressure base, vertically spaced above a pressure means, means for conveying a blank across said pressure base, under said pressure means to form blank into a part auxiliary pressure means for preventing flow of material in portions of said blanK other than areas beneath said pressure means, and means for spring biasing said auziliary pressure means downwardly.
Claim 13
Dependent Claim
19 words
The combination of claim 8, means for adjustably mounting said auxiliary pressure means on said first mentioned pressure means.
Claim 14
Dependent Claim
83 words
The combination comprising a plurality of die segments, a force translating element for each said die segment, confining means for confining said die segments and said force translating means being positioned to transfer pressure to said die segments with a minimum of rocking force being transmitted to said die segments, each of said die segments being in contact with at least one other die segment and each of said force translating elements being in contact with at least one other force translating element.
Claim 15
Dependent Claim
83 words
The combination comprising a plurality of die segments, a force translating element for each said die segment, confining means for confining said die segments and said force translating means being positioned to transfer pressure to said die segments with a minimum of rocking force being transmitted to said die segments, each of said die segments being in contact with at least one other die segment and each of said force translating elements being in contact with at least one other force translating element.
Claim 16
Dependent Claim
24 words
The combination as defined by claim 10, said force translating elements including a curved edge portion for receiving pressure with a minimum of jar.
Claim 17
Dependent Claim
24 words
The combination of claim 10, said confining means including a wall portion for absorbing horizontal components of force transmitted to said force translating elements.
Claim 18
Dependent Claim
46 words
The combination as defined by claim 10, each of said force translating elements having a width substantially equal to the width of said die segment so that force exerted through each force translating element is transferred to only one die segment thereby maximizing the applied pressure.
Claim 19
Dependent Claim
35 words
The combination as defined by claim 10, said confining means including wall means, adjustement means for adjusting at least a portion of said wall means for confining said die segments and said force translating elements.
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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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |