Patent US1781048A successfully refreshed from Google Patents.
Patent US3800741A successfully refreshed from Google Patents.
US3800741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chuck for crown closure lining apparatus
Assignee: WR Grace and Co Conn
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Filing: 1973-02-12
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Granted: 1974-04-02
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Expires: 1993-02-12
Abstract
Abstract A chuck to be fitted on the rotatable spindles of crown closure lining machines is adapted to center and hold both normal crowns and crowns having protruding tabs, and hold them in centered position despite the off-centering effect of the tab. The chuck has a shallow rim which surrounds the seated crown, a narrow shoulder on which the crown seats, and an inwardly directed conical bore leading to a vacuum passage through the spindle.
Inventors
- 👤 R Boulton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:34
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/38; B21D51/44; B21D51/46; Y; Y10; Y10S; Y10S425/00; Y10S425/809; Y10T; Y10T279/00; Y10T279/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
226 words
An apparatus for lining crown closures with sealing composition including a. A chuck shaft having a hollow bore, said shaft being axially rotatable and reciprocatable in bearing means supported by a frame; b. a chuck for receiving unlined crown closures, the chuck comprising an upper crown-receiving head portion and a lower shaft portion, the uppermost end of said head portion having a crown pocket formed by an upstanding peripheral rim and a conical bore concentric with said rim having a base area which includes a major portion of the area of said pocket, said conical bore having a depth of at least one half of the base diameter of said bore, the walls of which bore converge at acute angles whereby an angular air flow pattern converging into said bore is established and becomes effective to center the crown on said chuck, said lower shaft portion having an axial bore communicating with said conical bore, said chuck being mounted upon said chuck shaft in a manner such that said axial bore of said lower shaft portion communicates with the hollow bore of said chuck shaft; c. means positioned above said chuck for dispensing sealing composition into a closure crown carried by said chuck; and d. reciprocating means carried by said frame for removing closures from said chuck after dispensing of the sealing composition in the closure.
Claim 2
Independent Claim
226 words
An apparatus for lining crown closures with sealing composition including a. A chuck shaft having a hollow bore, said shaft being axially rotatable and reciprocatable in bearing means supported by a frame; b. a chuck for receiving unlined crown closures, the chuck comprising an upper crown-receiving head portion and a lower shaft portion, the uppermost end of said head portion having a crown pocket formed by an upstanding peripheral rim and a conical bore concentric with said rim having a base area which includes a major portion of the area of said pocket, said conical bore having a depth of at least one half of the base diameter of said bore, the walls of which bore converge at acute angles whereby an angular air flow pattern converging into said bore is established and becomes effective to center the crown on said chuck, said lower shaft portion having an axial bore communicating with said conical bore, said chuck being mounted upon said chuck shaft in a manner such that said axial bore of said lower shaft portion communicates with the hollow bore of said chuck shaft; c. means positioned above said chuck for dispensing sealing composition into a closure crown carried by said chuck; and d. reciprocating means carried by said frame for removing closures from said chuck after dispensing of the sealing composition in the closure.
References Cited (Backward Citations)
US98820A
Cited
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Cited
US3333571A
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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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |