US3735628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallic can body strippers and the like
Assignee: Chromalloy Corp
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Filing: 1972-05-11
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Granted: 1973-05-29
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Expires: 1992-05-11
Abstract
Abstract A series of stripper members are mounted by a retainer ring so as to be moved outwardly by a cup-shaped article during movement of the cup-shaped article and a ram end rearwardly therethrough, the stripper members then moving inwardly to engage the article during ram return movement and strip the article from the ram end. Such stripper member movement is controlled by an encircling resilient ring bearing inwardly against an angular surface on each of the stripper members so that the resilient ring simultaneously exerts axial forces to retain the stripper members properly positioned and properly pivotal, as well as radial forces to ensure such proper pivoting and article engagement.
Inventors
- 👤 P Hutchison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:58
CPC Classifications
B; B21; B21D; B21D45/00; B21D45/06; B21D45/065
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
341 words
In a stripping device of the type receiving an end of an axially rearwardly and forwardly moving ram therethrough with said ram end carrying a cup-shaped article thereon for stripping said cup-shaped article from said ram end during ram end forward movement; the combination of: a retainer ring having an axial ram opening therethrough spaced larger than outer dimensions of said ram end and a cup-shaped article thereon; an annular recess formed in said retainer ring and opening into said ram opening, said recess having an annular and rearwardly opening pocket formed at a forward extremity thereof with said pocket being generally U-shaped in radial cross-section; a plurality of stripper members in said retainer ring recess, each of said stripper members having a generally forwardly extending mounting part forwardly received in said retainer ring recess pocket with a forwardly facing arcuate surface of said mounting part at all times abutting and pivotal over a generally radial surface of said retainer ring recess pocket, each stripper member mounting part being connected spaced rearwardly of said retainer ring recess pocket to a radially inwardly projecting finger part slidable over a cup-shaped article upon outward pivoting of said stripper member during rearward movement of said article and ram end therethrough and engageable with a forward edge of said article upon inward pivoting of said stripper member during forward ram movement, each of said stripper members having a generally radially outwardly facing angular control surface formed thereon spaced rearward of said retainer ring recess pocket, said control surface angling a greater degree to radial than to axial; and resilient ring means surrounding said stripper members engaging said stripper member angular control surfaces for exerting combined axial and inward radial forces thereon resiliently retaining said stripper members forwardly in said retainer ring recess pockets at all times abutting said pocket radial surfaces and at all times resiliently urging inward pivoting of said stripper members, said resilient ring means being at all times free of engaging said stripper members rearwardly of said stripper member angular control surfaces.
Claim 2
Dependent Claim
341 words
In a stripping device of the type receiving an end of an axially rearwardly and forwardly moving ram therethrough with said ram end carrying a cup-shaped article thereon for stripping said cup-shaped article from said ram end during ram end forward movement; the combination of: a retainer ring having an axial ram opening therethrough spaced larger than outer dimensions of said ram end and a cup-shaped article thereon; an annular recess formed in said retainer ring and opening into said ram opening, said recess having an annular and rearwardly opening pocket formed at a forward extremity thereof with said pocket being generally U-shaped in radial cross-section; a plurality of stripper members in said retainer ring recess, each of said stripper members having a generally forwardly extending mounting part forwardly received in said retainer ring recess pocket with a forwardly facing arcuate surface of said mounting part at all times abutting and pivotal over a generally radial surface of said retainer ring recess pocket, each stripper member mounting part being connected spaced rearwardly of said retainer ring recess pocket to a radially inwardly projecting finger part slidable over a cup-shaped article upon outward pivoting of said stripper member during rearward movement of said article and ram end therethrough and engageable with a forward edge of said article upon inward pivoting of said stripper member during forward ram movement, each of said stripper members having a generally radially outwardly facing angular control surface formed thereon spaced rearward of said retainer ring recess pocket, said control surface angling a greater degree to radial than to axial; and resilient ring means surrounding said stripper members engaging said stripper member angular control surfaces for exerting combined axial and inward radial forces thereon resiliently retaining said stripper members forwardly in said retainer ring recess pockets at all times abutting said pocket radial surfaces and at all times resiliently urging inward pivoting of said stripper members, said resilient ring means being at all times free of engaging said stripper members rearwardly of said stripper member angular control surfaces.
Claim 3
Dependent Claim
25 words
A stripping device as defined in claim 1 in which said resilient ring means rearwardly abuts generally radially extending surfaces of said retainer ring recess.
Claim 4
Dependent Claim
23 words
A stripping device as defined in claim 1 in which said stripper member control surfaces angle in the order of 60* to radial.
Claim 5
Dependent Claim
27 words
A stripping device as defined in claim 1 in which said resilient ring means at all times engages said stripper members solely at said angular control surfaces.
Claim 6
Dependent Claim
41 words
A stripping device as defined in claim 1 in which said stripper member control surfaces angle in the order of 60* to radial; and in which said resilient ring means rearwardly abuts generally radially extending surfaces of said retainer ring recess.
Claim 7
Dependent Claim
39 words
A stripping device as defined in claim 1 in which said resilient ring means at all times engages said stripper members solely at said angular control surfaces and rearwardly abuts generally radially extending surfaces of said retainer ring recess.
Claim 8
Dependent Claim
55 words
A stripping device as defined in claim 1 in which said stripper member control surfaces angle in the order of 60* to radial; and in which said resilient ring means at all times engages said stripper members solely at said angular control surfaces and rearwardly abuts generally radially extending surfaces of said retainer ring recess.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |