Patent US4487051A successfully refreshed from Google Patents.
US4487051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Press apparatus
Assignee: Toyota Motor Corp
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Filing: 1982-12-17
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Granted: 1984-12-11
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Expires: 2002-12-17
Abstract
Abstract A press apparatus having a lower die, an upper die and a lateral pressing cam mechanism adapted to apply a lateral pressure to a work clamped between the upper and lower dies. The lateral pressing cam mechanism includes a slidable cam adapted to be slided towards the clamped work through cooperation with a fixed cam fixed to an actuator. The apparatus has a guide mechanism pivotally secured at its one end to a supporting member extended from the lower die and provided at its other end with a guide portion for locating the work on the lower die. A mutually cooperating cam is provided on the upper portion of the slidable cam and on the central portion of the guide mechanism, so that the guide mechanism is swung from the path of the slidable cam as it is moved towards the work clamped between the two dies.
Inventors
- 👤 Kuniharu Iwamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:44
CPC Classifications
B; B21; B21D; B21D19/00; B21D19/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
185 words
A press apparatus, comprising: a lower die for receiving a workpiece; an upper die movable in direction towards said lower die to clamp said workpiece in cooperation with said lower die; a lateral pressing cam mechanism including a fixed cam movable in a single plane parallel to said upper die, and a slidable cam in cooperation with said fixed cam movable substantially laterally with respect to the movement of the upper die as said fixed cam is moved, thereby effecting work on said workpiece clamped between said upper and lower dies; guide means for selectively registering said workpiece on said lower die prior to said slidable cam beginning work on said workpiece, said guide means having at its one end a guide portion for registering said workpiece and a pivot at its other end mounted on a supporting member extending from said lower die; and mutually cooperating cam means provided on a portion of said slidable cam and a portion of said guide means, said mutually cooperating cam means causing said guide means to be pivoted on said pivot as said slidable cam undergoes movement.
Claim 2
Dependent Claim
185 words
A press apparatus, comprising: a lower die for receiving a workpiece; an upper die movable in direction towards said lower die to clamp said workpiece in cooperation with said lower die; a lateral pressing cam mechanism including a fixed cam movable in a single plane parallel to said upper die, and a slidable cam in cooperation with said fixed cam movable substantially laterally with respect to the movement of the upper die as said fixed cam is moved, thereby effecting work on said workpiece clamped between said upper and lower dies; guide means for selectively registering said workpiece on said lower die prior to said slidable cam beginning work on said workpiece, said guide means having at its one end a guide portion for registering said workpiece and a pivot at its other end mounted on a supporting member extending from said lower die; and mutually cooperating cam means provided on a portion of said slidable cam and a portion of said guide means, said mutually cooperating cam means causing said guide means to be pivoted on said pivot as said slidable cam undergoes movement.
Claim 3
Dependent Claim
60 words
A press apparatus as in claim 1, wherein: said mutually cooperating cam means constitutes a mounted roller for the portion associated with said slidable cam and an angled surface for the portion associated with said guide means, whereby operation of said mutually cooperating cam means prevents said guide means from blocking said slidable cam from performing work on aid workpiece.
Claim 4
Dependent Claim
23 words
A press apparatus as in claim 2, wherein: said upper die and said fixed cam are movable in tandem by a single actuator.
Claim 5
Dependent Claim
21 words
A press apparatus as in claim 1, wherein: said upper die and said fixed cam are movable independently by separate actuators.
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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) | 1987-12-11 | 1988-06-11 | 1988-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-11 | 1992-06-11 | 1992-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-11 | 1996-06-11 | 1996-12-11 | $7700.00 | Window Closed / Lapsed |