US5239722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pan cleaning assembly
Assignee: BAKE STAR Inc A CORP OF MINNESOTA
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Filing: 1992-04-23
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Granted: 1993-08-31
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Expires: 2012-04-23
Abstract
Abstract A pan scrubber apparatus is provided that cleans bakery pans with displaced brush bristle action. The pan scrubber includes a moveable frame that is attached to a stationary frame. A brush is mounted to the moveable frame and has elongated bristles extending outwardly. An oscillatory drive is connected to the movable frame to oscillate the brush toward and away from the outer surfaces of the pan causing the bristles to be moved in a substantially longitudinal direction of the bristles so ends of the bristles are moved against the outer surfaces of the pan intermittently. A rotational drive is further connected to the brush to rotate the brush. A bristle contact bar placed adjacent the brush temporarily impedes rotation of the bristles to effectuate cleaning.
Inventors
- 👤 Douglas R. Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:59
CPC Classifications
A; A21; A21B; A21B3/00; A21B3/16; A46; A46B; A46B13/00; A46B13/02; A47; A47L; A47L15/00; A47L15/37; A47L15/39; B; B08; B08B; B08B1/00; B08B1/10; B08B1/12; B08B1/20; B08B1/30; B08B1/32; B08B1/34; B08B1/50; B08B1/54
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
189 words
An apparatus for scrubbing outer surfaces of a pan, the apparatus comprising: a frame; brush means mounted on the frame, the brush means having elongated bristles extending outwardly from a brush axis in position to engage the outer surfaces of the pan; first power means connected to the brush means to oscillate the brush means toward and away from the outer surfaces of the pan, the first power means causing bristles that are engaging the outer pan surfaces to be moved in a substantially longitudinal direction with ends of the bristles moved against the outer surfaces of the pan intermittently; second power means connected to the brush means to rotate the brush means on the brush axis; and a bristled contact bar being rotatable on a bar longitudinal axis, the bristle contact bar being mounted adjacent the brush means at a selected radial distance from the brush axis to temporarily obstruct free rotation of the bristles about the brush axis such that the bristles are bent and placed in spring tension as the brush means rotates, the bristles contact bar releasing the bristles when sufficient spring tension exists therein.
Claim 2
Independent Claim
189 words
An apparatus for scrubbing outer surfaces of a pan, the apparatus comprising: a frame; brush means mounted on the frame, the brush means having elongated bristles extending outwardly from a brush axis in position to engage the outer surfaces of the pan; first power means connected to the brush means to oscillate the brush means toward and away from the outer surfaces of the pan, the first power means causing bristles that are engaging the outer pan surfaces to be moved in a substantially longitudinal direction with ends of the bristles moved against the outer surfaces of the pan intermittently; second power means connected to the brush means to rotate the brush means on the brush axis; and a bristled contact bar being rotatable on a bar longitudinal axis, the bristle contact bar being mounted adjacent the brush means at a selected radial distance from the brush axis to temporarily obstruct free rotation of the bristles about the brush axis such that the bristles are bent and placed in spring tension as the brush means rotates, the bristles contact bar releasing the bristles when sufficient spring tension exists therein.
Claim 3
Dependent Claim
64 words
The apparatus of claim 1 and further comprising third power means connected to the brush means to move the brush means and displace the ends of the bristles engaging the outer surfaces of the pan along the outer surfaces of the pan laterally of the oscillatory movement during the intermittent contact of the ends of the bristles with the outer surfaces of the pan.
Claim 4
Dependent Claim
18 words
The apparatus as specified in claim 2 wherein the generally lateral movement of the brush means is orbital.
Claim 5
Dependent Claim
41 words
The apparatus as specified in claim 1 wherein the first power means oscillates the brush means for intermittent contact of the ends of the bristles with the outer surfaces of the pan at the same time as the brush means rotates.
Claim 6
Dependent Claim
76 words
The apparatus of claim 1 wherein the frame is a stationary frame, wherein the brush means comprises a moveable frame, and a first and second rotatable brush mounted to the moveable frame at spaced apart locations and rotated by the rotational means, the first brush rotated on the first mentioned axis and the second brush rotated on a second brush axis, and wherein the moveable frame is pivotally connected to the stationary frame between the brushes.
Claim 7
Dependent Claim
45 words
The apparatus as specified in claim 1 and further comprising obstruction means mounted to the frame, the obstruction means being spaced apart from the bristle contact bar such that the bristles strike the obstruction means with spring tension when released from the bristle contact bar.
Claim 8
Dependent Claim
42 words
The apparatus as specified in claim 6 wherein the obstruction means comprises a second bristle contact bar having a second longitudinal bar axis, the second bristle contact bar being mounted adjacent the brush at a selected radial distance from the brush axis.
Claim 9
Independent Claim
161 words
The apparatus for scrubbing outer surfaces of a pan, the apparatus comprising: a stationary frame; a moveable frame pivotally connected to the stationary frame; a brush mounted to the moveable frame, the brush having elongated bristles extending outwardly from a brush axis in position to engage the outer surfaces of the pan; oscillatory means connected to the movable frame to oscillate the brush toward and away from the outer surfaces of the pan causing bristles that are engaging the outer pan surfaces to be moved in a substantially longitudinal direction with ends of the bristles moved against the outer surfaces of the pan intermittently; rotational means connected to the brush to rotate the brush on the brush axis; and displacement means connected to the moveable frame to move the brush such that the ends of the bristles are displaced laterally of the oscillatory movement during the intermittent contact of the ends of the bristles with the outer surfaces of the pan.
Claim 10
Independent Claim
161 words
The apparatus for scrubbing outer surfaces of a pan, the apparatus comprising: a stationary frame; a moveable frame pivotally connected to the stationary frame; a brush mounted to the moveable frame, the brush having elongated bristles extending outwardly from a brush axis in position to engage the outer surfaces of the pan; oscillatory means connected to the movable frame to oscillate the brush toward and away from the outer surfaces of the pan causing bristles that are engaging the outer pan surfaces to be moved in a substantially longitudinal direction with ends of the bristles moved against the outer surfaces of the pan intermittently; rotational means connected to the brush to rotate the brush on the brush axis; and displacement means connected to the moveable frame to move the brush such that the ends of the bristles are displaced laterally of the oscillatory movement during the intermittent contact of the ends of the bristles with the outer surfaces of the pan.
Claim 11
Dependent Claim
35 words
The apparatus as specified in claim 8 wherein the displacement means comprises a crank pin, a connecting rod connected between the crank pin and the moveable frame, and drive means to move the crank pin.
Claim 12
Dependent Claim
51 words
The apparatus as specified in claim 9 wherein the displacement means further comprises a second crank pin and a second connecting rod connected to the second crank pin and the moveable frame at a point spaced apart from the first connecting rod, the drive means further moving the second crank pin.
Claim 13
Dependent Claim
37 words
The apparatus as specified in claim 8 and further comprising a blower tube mounted to the stationary frame adjacent the pane outer surfaces, the blower tube providing compressed air to remove material from the pan outer surfaces.
Claim 14
Dependent Claim
34 words
The apparatus as specified in claim 11 and further comprising connection means for mounting the blower tube to the frame; the connection means allowing displacement of the blower tube when stuck by a pan.
Claim 15
Dependent Claim
54 words
The apparatus as specified in claim 8 and further comprising obstruction means mounted to the moveable frame for temporarily obstructing free rotation of the bristles about the brush axis such that the bristles are placed in spring tension as the brush rotates, the obstruction means releasing the bristles when sufficient spring tension exists therein.
Claim 16
Dependent Claim
39 words
The apparatus as specified in claim 8 wherein the obstruction means comprises a bristle contact bar having a bar longitudinal axis, the bristle contact bar being mounted adjacent the brush at a selected radial distance from the brush axis.
Claim 17
Dependent Claim
16 words
The apparatus of claim 14 wherein the bristle contact bar rotates on the bar longitudinal axis.
Claim 18
Dependent Claim
139 words
A self-cleaning apparatus for cleaning the outer surfaces of a pan, the apparatus comprising: a frame; a brush mounted to the frame, the brush having elongated bristles extending outwardly from a brush axis in position to engage the outer surfaces of the pan; rotational means for rotating the brush on the brush axis; first obstruction means mounted to the frame for temporarily obstructing free rotation of the bristles about the brush axis such that the bristles are bent and placed in spring tension as the brush rotates, the first obstruction means releasing the bristles when sufficient spring tension exists therein; and second obstruction means mounted to the frame, the second obstruction means being spaced apart from the first obstruction means such that the bristles strike the second obstruction means with spring tension when released from the first obstruction means.
Claim 19
Dependent Claim
139 words
A self-cleaning apparatus for cleaning the outer surfaces of a pan, the apparatus comprising: a frame; a brush mounted to the frame, the brush having elongated bristles extending outwardly from a brush axis in position to engage the outer surfaces of the pan; rotational means for rotating the brush on the brush axis; first obstruction means mounted to the frame for temporarily obstructing free rotation of the bristles about the brush axis such that the bristles are bent and placed in spring tension as the brush rotates, the first obstruction means releasing the bristles when sufficient spring tension exists therein; and second obstruction means mounted to the frame, the second obstruction means being spaced apart from the first obstruction means such that the bristles strike the second obstruction means with spring tension when released from the first obstruction means.
Claim 20
Dependent Claim
39 words
The apparatus as specified in claim 16 wherein the first obstruction means comprises a bristle contact bar having a longitudinal bar axis, the bristle bar being mounted adjacent the brush at a selected radial distance from the brush axis.
Claim 21
Dependent Claim
43 words
The apparatus as specified in claim 17 wherein the second obstruction means comprises a second bristle contact bar having a second longitudinal bar axis, the second bristle contact bar being mounted adjacent the brush at a selected radial distance from the brush axis.
Claim 22
Dependent Claim
33 words
The apparatus as specified in claim 18 wherein the first mentioned bristle contact bar rotates on the first mentioned bar axis and the second bristle contact bar rotates on the second bar axis.
Claim 23
Dependent Claim
24 words
The apparatus as specified in claim 17 wherein the first mentioned bar axis and the second bar axis are parallel to the brush axis.
References Cited (Backward Citations)
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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) | 1996-08-30 | 1997-03-01 | 1997-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-30 | 2001-03-01 | 2001-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-30 | 2005-03-01 | 2005-08-31 | $7700.00 | Window Closed / Lapsed |