Patent US3822622A successfully refreshed from Google Patents.
US3822622A
Expired / Lapsed
US
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Apparatus for making annular parts
Assignee: Wolverine Pentronix Inc
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Filing: 1972-08-07
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Granted: 1974-07-09
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Expires: 1992-08-07
Abstract
Abstract An apparatus for punching annular parts from a sheet of stock material, such as a continuous ribbon or tape of plastic material. The apparatus comprises means for feeding the ribbon or tape of stock material between two plate members, clamping a portion of the ribbon or tape between the plate members, and, by means of a pair, or a plurality of pairs, of opposed punch members adapted to be reciprocated in timed relationship to firstly punch from the stock material a slug for forming the center aperture of the annular part, and secondly punch from the stock material the annular part itself. The slug punched from the stock material and the annular part are separated by appropriate aspirator means.
Inventors
- 👤 J Smith
- 👤 Santis R De
- 👤 G Detroyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:16
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B26; B26F; B26F1/00; B26F1/38; B26F1/3846; H; H01; H01F; H01F41/00; H01F41/02; H01F41/0206; H01F41/0246; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2066; Y10T83/207; Y10T83/444; Y10T83/447; Y10T83/4473; Y10T83/869; Y10T83/8821; Y10T83/8828; Y10T83/8831; Y10T83/8832; Y10T83/8835
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
183 words
An apparatus for punching an annular part from a sheet of stock material, said apparatus comprising a first plate member, an aperture in said first plate member, a first punch disposed for reciprocation through said aperture, a longitudinal bore extending axially through said first punch, a second plate member, an aperture in said second plate member, a second punch disposed for reciprocation through said second plate member, said second punch having a projecting end portion adapted to fit the longitudinal bore of said first punch, and means for reciprocating said first and second punches and one of said plate members relative to the other in timed relationship for sequentially clamping said stock material between said plate members, reciprocating said first punch in engagement with a surface of said stock material, reciprocating said second punch to project the end portion thereof within the longitudinal bore of said first punch for punching a slug from said stock material, retracting said second punch and reciprocating said first punch to project through the aperture in said second plate for punching said annular part from said stock material.
Claim 2
Independent Claim
183 words
An apparatus for punching an annular part from a sheet of stock material, said apparatus comprising a first plate member, an aperture in said first plate member, a first punch disposed for reciprocation through said aperture, a longitudinal bore extending axially through said first punch, a second plate member, an aperture in said second plate member, a second punch disposed for reciprocation through said second plate member, said second punch having a projecting end portion adapted to fit the longitudinal bore of said first punch, and means for reciprocating said first and second punches and one of said plate members relative to the other in timed relationship for sequentially clamping said stock material between said plate members, reciprocating said first punch in engagement with a surface of said stock material, reciprocating said second punch to project the end portion thereof within the longitudinal bore of said first punch for punching a slug from said stock material, retracting said second punch and reciprocating said first punch to project through the aperture in said second plate for punching said annular part from said stock material.
Claim 3
Dependent Claim
58 words
The apparatus of claim 1 wherein said sheet of stock material is in the form of a continuous ribbon or tape and further comprising means for sequentially advancing said ribbon or tape to a position presenting a fresh portion of said stock material to the action of the punches for sequentially punching a plurality of said annular parts.
Claim 4
Dependent Claim
19 words
The apparatus of claim 1 further comprising means for extracting said slug from said bore in said first punch.
Claim 5
Dependent Claim
12 words
The apparatus of claim 3 wherein said means is an aspirator means.
Claim 6
Dependent Claim
20 words
The apparatus of claim 1 further comprising means for extracting said annular part form the aperture in said second plate.
Claim 7
Dependent Claim
36 words
The apparatus of claim 5 wherein said means comprises said first punch adapted to advance during retraction of said second punch to a position ejecting said annular part from said aperture in said second plate member.
Claim 8
Dependent Claim
14 words
The apparatus of claim 6 further comprising aspirator means for recovering said annular part.
Claim 9
Dependent Claim
58 words
The apparatus of claim 2 further comprising a plurality of pairs of said first and second punches in at least one row disposed transversely to the axis of advance of said ribbon or tape, and means for reciprocating said first and said second punches in unison in timed relationship for simultaneously punching a plurality of said annular parts.
Claim 10
Dependent Claim
32 words
The apparatus of claim 8 further comprising single aspirator means for each cavity in said second plate for recovering said annular parts individually and a single receptacle connected to each aspirator means.
Claim 11
Dependent Claim
26 words
The apparatus of claim 1 wherein said first plate member is disposed below and said second plate member is disposed above said sheet of stock material.
Claim 12
Dependent Claim
77 words
The apparatus of claim 10 wherein said second plate member is mounted for reciprocation in unison with said second punch until the second plate member engages a surface of said stock material for clamping said stock material between said first and second plate members, and biasing means are disposed for maintaining said second plate member in engagement with said surface of the stock material during punching of said slug and of said annular part froM said material.
Claim 13
Dependent Claim
56 words
The apparatus of claim 2 wherein said means for sequentially advancing said ribbon or tape of stock material comprises a pair of opposed pinch rolls, intermittent drive means for at least one of said rolls for pulling said ribbon or tape axially between said plate members when said plate members are reciprocated away from each other.
Claim 14
Dependent Claim
37 words
The apparatus of claim 12 wherein said roll driven by said intermittent drive means is peripherally provided with a roughened surface for deformably engaging a surface of said ribbon or tape after passage between said plate members.
Claim 15
Dependent Claim
55 words
The apparatus of claim 12 wherein said intermittent drive means comprises a crank arm mounted for radial motion at an end about an axis coincident with the axis of said roll, one-way drive means interconnecting said crank arm and said roll at said coincident axes, and means oscillating said crank arm through a predetermined arc.
Claim 16
Dependent Claim
105 words
The apparatus of claim 14 further comprising a second pair of opposed pinch rolls, said first mentioned pair and said second pair of pinch rolls being spatially disposed on opposite lateral sides of said plate members, a second crank arm mounted for radial motion at an end about an axis coincident with the axis of one of said rolls of said second pair, one-way drive means interconnecting said crank arm and said roll at said coincident axes, connecting arm means pivotally interconnecting said first and second crank arms for oscillation through said predetermined arc in unison, and driving means for oscillating said connecting arm means.
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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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |