US3575382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multipurpose continuous mixing and/or kneading apparatus
Assignee: Baker Perkins Inc
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Filing: 1968-11-07
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Granted: 1971-04-20
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Expires: 1988-11-07
Abstract
Abstract This invention relates to mixing and/or kneading machines of a type wherein two or more shafts are journaled in a mixer housing and pairs of radially engaging paddle-shaped sections are provided on the shafts, between a charge opening and a discharge opening, which are driven at the same speed and in the same direction of rotation to homogeneously mix and/or knead a variety of materials, which may be in plastic, liquid, granular or powder form, and are moved continuously in the mixer from the charge opening to the discharge opening.
Inventors
- 👤 Bernard A Loomans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:04
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/46; B29B7/48; B29B7/482; B29B7/481; B29B7/488; B29B7/489; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/395; B29C48/40; B29C48/405; B29C48/50; B29C48/505; B29C48/535; B29C48/565; B29C48/76; B29C48/765; B29C48/766; B29C48/767
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
196 words
In kneading and like machines: barrel means having spacedapart radial charge and discharge openings; at least a pair of generally axially parallel shafts extending coextensively in said barrel means between said openings; means for revolving the shafts at the same speed and in the same direction of rotation; cogenerative mating feed screw sections on said shafts at said charge opening; pairs of radially extending, mating, cogenerative, axially abutting paddles fixed on said shafts downstream from said feed screw sections and having crests at their ends which extend helically; said paddles on both shafts being progressively so angularly displaced incrementally that the paddles on each shaft form a series of full helices extending continuously which wipe the identical helices formed on the other shaft; mating cogenerative discharge screw sections provided on said shafts downstream from said helices and having portions of opposite hand separated, radially opposite said discharge opening, by at least a pair of nonpitched radially extending, mating, cogenerative paddles; the pitch of said screw sections being greater than the pitch of the helices formed by said paddles, and said barrel means being shaped so as to be completely wiped by said screw sections and paddles.
Claim 2
Dependent Claim
196 words
In kneading and like machines: barrel means having spacedapart radial charge and discharge openings; at least a pair of generally axially parallel shafts extending coextensively in said barrel means between said openings; means for revolving the shafts at the same speed and in the same direction of rotation; cogenerative mating feed screw sections on said shafts at said charge opening; pairs of radially extending, mating, cogenerative, axially abutting paddles fixed on said shafts downstream from said feed screw sections and having crests at their ends which extend helically; said paddles on both shafts being progressively so angularly displaced incrementally that the paddles on each shaft form a series of full helices extending continuously which wipe the identical helices formed on the other shaft; mating cogenerative discharge screw sections provided on said shafts downstream from said helices and having portions of opposite hand separated, radially opposite said discharge opening, by at least a pair of nonpitched radially extending, mating, cogenerative paddles; the pitch of said screw sections being greater than the pitch of the helices formed by said paddles, and said barrel means being shaped so as to be completely wiped by said screw sections and paddles.
Claim 3
Dependent Claim
123 words
In kneading and like machines: barrel means having a charge opening axially spaced from a radial discharge opening; at least a pair of generally axially parallel shafts extending coextensively in said barrel means between said openings; means for revolving the shafts at the same speed and in the same direction of rotation; pairs of radially extending, mating, cogenerative, axially abutting paddles fixed on said shafts downstream from said charge opening; mating cogenerative discharge sections provided on said shafts downstream from said paddles and having portions of opposite hand separated radially opposite said discharge opening by at least a pair of nonpitched radially extending, mating, cogenerative paddles, said barrel means being shaped so as to be completely wiped by said discharge sections and paddles.
Claim 4
Dependent Claim
123 words
In kneading and like machines: barrel means having a charge opening axially spaced from a radial discharge opening; at least a pair of generally axially parallel shafts extending coextensively in said barrel means between said openings; means for revolving the shafts at the same speed and in the same direction of rotation; pairs of radially extending, mating, cogenerative, axially abutting paddles fixed on said shafts downstream from said charge opening; mating cogenerative discharge sections provided on said shafts downstream from said paddles and having portions of opposite hand separated radially opposite said discharge opening by at least a pair of nonpitched radially extending, mating, cogenerative paddles, said barrel means being shaped so as to be completely wiped by said discharge sections and paddles.
Claim 5
Dependent Claim
42 words
The combination defined in claim 2 in which cogenerative mating feed screw sections are provided on said shafts at said charge opening and said portions of opposite hand have the cross-sectional shape of said paddles and comprise a series of full helices.
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |