US3773436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shroud for asphalt mixer paddle
Assignee: KENCO ENGIN Inc
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Filing: 1971-09-14
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Granted: 1973-11-20
•
Expires: 1991-09-14
Abstract
Abstract A shroud to protect the shank of a mixing paddle of a heavy duty asphalt mixer in which the shroud is attached to the mixer tip without exposing the head of the bolt for presenting a smooth surface to the asphalt to increase the wear of the shroud and to reduce the drag on the mixing paddles for conserving power.
Inventors
- 👤 D Lutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:18
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/02; E01C19/10; E01C19/1013; E01C19/104; B; B01; B01F; B01F27/00; B01F27/05; B01F27/051; B01F27/052
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
147 words
In combination: a. A rotatable shaft; b. a shank mounted on said shaft for rotation with a free end of said shank projecting outwardly from said shaft; c. mixer tip mounting means on the free end of said shank; d. a mixer tip attached to said mixer tip mounting means, said mixer tip being formed with an opening therethrough; e. a shroud supported by said mixer tip and extending beyond said mixer tip in the direction of said shank to protect a portion of said shank; and f. a bolt received by said opening in said mixer tip with the bolt head thereof projecting toward said shroud, g. said shroud having a wall thereof confronting said mixer tip, said shroud being formed with a recess in said confronting wall for receiving and disposing said bolt head within said recess for attaching said shroud to said mixer tip.
Claim 2
Dependent Claim
147 words
In combination: a. A rotatable shaft; b. a shank mounted on said shaft for rotation with a free end of said shank projecting outwardly from said shaft; c. mixer tip mounting means on the free end of said shank; d. a mixer tip attached to said mixer tip mounting means, said mixer tip being formed with an opening therethrough; e. a shroud supported by said mixer tip and extending beyond said mixer tip in the direction of said shank to protect a portion of said shank; and f. a bolt received by said opening in said mixer tip with the bolt head thereof projecting toward said shroud, g. said shroud having a wall thereof confronting said mixer tip, said shroud being formed with a recess in said confronting wall for receiving and disposing said bolt head within said recess for attaching said shroud to said mixer tip.
Claim 3
Dependent Claim
87 words
A combination as claimed in claim 1 wherein said recess has a width greater than the cross-sectional dimension of said bolt head to receive said bolt head, said combination comprising retaining means on said confronting wall of said shroud, said retaining means being disposed along confronting walls of said recess and being formed with an opening having a width less than the cross-sectional dimension of said bolt head and greater than the cross-sectional dimension of the rod of said bolt for holding said shroud on said bolt.
Claim 4
Dependent Claim
35 words
A combination as claimed in claim 2 wherein a nut on said bolt rod secures said bolt on said mixer tip and secures said shroud on said bolt to be supported by said mixer tip.
Claim 5
Dependent Claim
66 words
A combination as claimed in claim 3 wherein said shroud includes a second wall for contacting a mixture that faces in a direction away from said mixer tip, said second wall being generally smooth, said recess being spaced from the surface of said second wall contacting the mixture so as to leave said second wall uninterupted in presenting a generally smooth contacting surface to the mixture.
Claim 6
Dependent Claim
90 words
A combination as claimed in claim 3 wherein said mixer tip is formed with a countersink second opening facing said shroud and extending through said mixer tip, said combination comprising a second bolt with a bolt head seated in said countersink opening and extending through said mixer tip mounting means for attaching said mixer tip to said mixer tip mounting means, and a nut on said second bolt for securing said second bolt on said mixer tip mounting means for supporting said mixer tip on said mixer tip mounting means.
Claim 7
Dependent Claim
25 words
The combination as claimed in claim 5 wherein said recess includes a sloping wall for facilitating the entry of said bolt head into said recess.
Claim 8
Dependent Claim
74 words
A mixer tip comprising: a. an inner wall; b. an outer wall facing in a direction away from the inner wall, said outer wall being formed with an exposed surface facing in a direction away from said inner wall and spaced therefrom; c. a leading wall extending between said inner and outer walls; and d. a trailing wall extending between said inner and outer walls, said trailing wall being spaced from said leading wall,
Claim 9
Dependent Claim
74 words
A mixer tip comprising: a. an inner wall; b. an outer wall facing in a direction away from the inner wall, said outer wall being formed with an exposed surface facing in a direction away from said inner wall and spaced therefrom; c. a leading wall extending between said inner and outer walls; and d. a trailing wall extending between said inner and outer walls, said trailing wall being spaced from said leading wall,
Claim 10
Dependent Claim
128 words
A mixer tip comprising: a. an inner wall; b. an outer wall facing into a direction away from the inner wall, said outer wall being formed with an exposed surface facing in a direction away from said inner wall and spaced therefrom; c. a leading wall extending between said inner and outer walls; d. a trailing wall extending between said inner and outer walls, said trailing wall being spaced from said leading wall, e. said inner wall being formed with a recess extending between said leading and trailing walls, said recess being formed to receive at least one bolt head and being spaced from the exposed surface of said outer wall; and f. bolt head retaining means on said inner wall disposed along confronting walls of said reCess.
Claim 11
Dependent Claim
128 words
A mixer tip comprising: a. an inner wall; b. an outer wall facing into a direction away from the inner wall, said outer wall being formed with an exposed surface facing in a direction away from said inner wall and spaced therefrom; c. a leading wall extending between said inner and outer walls; d. a trailing wall extending between said inner and outer walls, said trailing wall being spaced from said leading wall, e. said inner wall being formed with a recess extending between said leading and trailing walls, said recess being formed to receive at least one bolt head and being spaced from the exposed surface of said outer wall; and f. bolt head retaining means on said inner wall disposed along confronting walls of said reCess.
Claim 12
Dependent Claim
65 words
A mixer tip as claimed in claim 8 wherein said recess has a width greater than the cross-sectional dimension of a bolt head to receive the bolt head, said retaining means being formed with a width less than the cross-sectional dimension of the bolt head and greater than the cross-sectional dimension of the rod of the bolt for holding the mixer tip on the bolt.
Claim 13
Dependent Claim
26 words
A mixer tip as claimed in claim 9 wherein said recess includes a sloping wall for facilitating the entry of the bolt head into said recess.
Claim 14
Dependent Claim
21 words
A mixer tip as claimed in claim 10 wherein said recess includes walls conforming to the contour of the bolt head.
Claim 15
Dependent Claim
135 words
In combination: a. a rotatable shaft; b. a shank mounted on said shaft for rotating with a free end of said shank projecting outwardly from said shaft; c. mixer tip mounting means on the free end of said shank, said mounting means being formed with an opening therethrough; d. a mixer tip supported by said mounting means, said mixer tip having a wall thereof confronting said mounting means, said mixer tip being formed with an elongated recess in said wall, said recess being spaced from said mounting means for enabling the radial displacement of a bolt head therein; and e. a bolt received by said opening in said mounting means, said bolt having a bolt head received by said recess for radial displacement within said recess for attaching said mixer tip to said mounting means.
Claim 16
Dependent Claim
135 words
In combination: a. a rotatable shaft; b. a shank mounted on said shaft for rotating with a free end of said shank projecting outwardly from said shaft; c. mixer tip mounting means on the free end of said shank, said mounting means being formed with an opening therethrough; d. a mixer tip supported by said mounting means, said mixer tip having a wall thereof confronting said mounting means, said mixer tip being formed with an elongated recess in said wall, said recess being spaced from said mounting means for enabling the radial displacement of a bolt head therein; and e. a bolt received by said opening in said mounting means, said bolt having a bolt head received by said recess for radial displacement within said recess for attaching said mixer tip to said mounting means.
Claim 17
Dependent Claim
35 words
A combination as claimed in claim 12 wherein said mixer tip is formed with a leading wall and a trailing wall, said recess being formed to extend between said leading wall and said trailing wall.
Claim 18
Dependent Claim
89 words
A combination as claimed in claim 13 wherein said recess has a width greater than the cross-sectional dimension of said bolt head to receive said bolt head, said combination comprising retaining means on said confronting wall of said mixer tip, said retaining means being disposed along confronting walls of said recess and being formed with an opening having a width less than the cross-sectional dimension of said bolt head and greater than the cross-sectional dimension of the rod of said bolt for holding said mixer tip on said bolt.
Claim 19
Dependent Claim
36 words
A combination as claimed in claim 14 wherein a nut on said bolt rod secures said bolt on said mounting means and secures said mixer tip on said bolt to be supported by said mounting means.
Claim 20
Dependent Claim
67 words
A combination as claimed in claim 15 wherein said mixer tip includes a second wall for contacting a mixture that faces in a direction away from said mounting means, said second wall being generally smooth, said recess being spaced from the surface of said second wall contacting the mixture so as to leave said second wall uninterupted in presenting a generally smooth contacting surface to the mixture.
Claim 21
Dependent Claim
25 words
A combination as claimed in claim 16 wherein said recess includes a sloping wall for facilitating the entry of the bolt head into the recess.
Claim 22
Dependent Claim
20 words
A combination as claimed in claim 17 wherein said recess includes walls conforming to the contour of the bolt head.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |