US3694847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for automatically cleaning a window sash
Assignee: Devac Inc
•
Filing: 1970-03-25
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Granted: 1972-10-03
•
Expires: 1990-03-25
Abstract
Abstract A device for automatically cleaning a window sash or the like which includes a support having a housing mounted thereon, operable mechanism mounted on the support for transporting a window sash upon the support and through the housing, together with means for guiding the sash through the housing, operable mechanism carried by the support for cleaning the sash by means of a liquid as it is transported upon the support and through the housing and means for collecting the liquid used for cleaning.
Inventors
- 👤 Frank W Hetman
- 👤 Donald I Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:34
CPC Classifications
C; C03; C03C; C03C23/00; C03C23/0075; B; B08; B08B; B08B11/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
204 words
A device for automatically cleaning a window sash or the like comprising: a. support means having b. housing means thereon, c. means mounted on said support means for transporting a window sash upon the support means and through the housing means, d. means carried by the support means for guiding the sash through the housing as it is transported, e. means carried by the support means for cleaning the sash with a liquid as it is transported upon the support means and through the housing means, f. means for collecting the liquid used in cleaning the sash, g. said transporting means including a multiplicity of rollers for engagement by the edge of the sash, h. means for rotating the rollers, i. said guiding means including a multiplicity of rollers for engagement by the sash, j. saId cleaning means including k. brushes, l. means for moving the brushes upon and in contact with a sash transported to and past the brushes, m. means for supplying a cleaning liquid to and upon the sash in the area of the brushes for coaction therewith, n. said cleaning means also including wiper blades mounted within the housing for wiping the sash after it is contacted by said brushes.
Claim 2
Independent Claim
204 words
A device for automatically cleaning a window sash or the like comprising: a. support means having b. housing means thereon, c. means mounted on said support means for transporting a window sash upon the support means and through the housing means, d. means carried by the support means for guiding the sash through the housing as it is transported, e. means carried by the support means for cleaning the sash with a liquid as it is transported upon the support means and through the housing means, f. means for collecting the liquid used in cleaning the sash, g. said transporting means including a multiplicity of rollers for engagement by the edge of the sash, h. means for rotating the rollers, i. said guiding means including a multiplicity of rollers for engagement by the sash, j. saId cleaning means including k. brushes, l. means for moving the brushes upon and in contact with a sash transported to and past the brushes, m. means for supplying a cleaning liquid to and upon the sash in the area of the brushes for coaction therewith, n. said cleaning means also including wiper blades mounted within the housing for wiping the sash after it is contacted by said brushes.
Claim 3
Dependent Claim
20 words
The device of claim 1 in which said wiper blades are adjustable to accommodate and wipe sashes of different widths.
Claim 4
Independent Claim
255 words
A device for automatically cleaning a window sash or the like comprising: a. support means having b. housing means thereon, c. means mounted on said support means for transporting a window sash upon the support means and through the housing means, d. means carried by the support means for guiding the sash through the housing as it is transported, e. means carried by the support means for cleaning the sash with a liquid as it is transported upon the support means and through the housing means, f. means for collecting the liquid used in cleaning the sash, g. said transporting means including a multiplicity of rollers for engagement by the edge of the sash, h. means for rotating the rollers, i. said guiding means including a multiplicity of rollers for engagement by the sash, j. said cleaning means including k. brushes, l. means for moving the brushes upon and in contact with a sash transported to and past the brushes, m. means for supplying a cleaning liquid to and upon the sash in the area of the brushes for coaction therewith, n. said cleaning means also including wiper blades mounted within the housing for wiping the sash after it is contacted by said brushes, o. an upper housing through which the upper frame edge of the sash passes, p. a lower housing through which the lower frame edge of the sash passes, q. means for creating a partial vacuum in said upper housing, and r. means for creating a partial vacuum in said lower housing.
Claim 5
Independent Claim
255 words
A device for automatically cleaning a window sash or the like comprising: a. support means having b. housing means thereon, c. means mounted on said support means for transporting a window sash upon the support means and through the housing means, d. means carried by the support means for guiding the sash through the housing as it is transported, e. means carried by the support means for cleaning the sash with a liquid as it is transported upon the support means and through the housing means, f. means for collecting the liquid used in cleaning the sash, g. said transporting means including a multiplicity of rollers for engagement by the edge of the sash, h. means for rotating the rollers, i. said guiding means including a multiplicity of rollers for engagement by the sash, j. said cleaning means including k. brushes, l. means for moving the brushes upon and in contact with a sash transported to and past the brushes, m. means for supplying a cleaning liquid to and upon the sash in the area of the brushes for coaction therewith, n. said cleaning means also including wiper blades mounted within the housing for wiping the sash after it is contacted by said brushes, o. an upper housing through which the upper frame edge of the sash passes, p. a lower housing through which the lower frame edge of the sash passes, q. means for creating a partial vacuum in said upper housing, and r. means for creating a partial vacuum in said lower housing.
Claim 6
Dependent Claim
53 words
The device of claim 3 in which a. said upper housing is adjustable relative to said transport rollers to accommodate sashes of different widths, and b. said blades include upper and lower, the uppermost of said wiper blades being mounted in and carried by said upper housing for wiping sashes of different widths.
Claim 7
Dependent Claim
38 words
The device of claim 4 in which said blades include intermediate wiper blades adjustable intermediate said uppermost wiper blades and said lower wiper blades for coaction with said uppermost and lower blades for wiping sashes of different widths.
Claim 8
Dependent Claim
29 words
The device of claim 5 in which the adjustable intermediate wiper-blades includes means responsive to the adjustable movement of said upper housing for causing adjustment of the intermediate wiper-blades.
Claim 9
Dependent Claim
23 words
The device of claim 5 in which said intermediate wiper blades includes means responsive to the adjustable sliding movement of said upper housing.
Claim 10
Dependent Claim
73 words
The device of claim 3 in which a. said partial vacuum creating means for said upper housing includes an elongated housing including b. an endless belt mounted on rollers and a portion thereof forming an internal wall thereof, and c. a conduit connected to said upper housing and said belt and communicating internally of the belt and housing whereby a partial vacuum is maintained in said upper housing as it is adjustably positioned.
Claim 11
Dependent Claim
52 words
The device of claim 1 in which said wiper blades include a. upper wiper blades, b. intermediate wiper blades, c. lower wiper blades, d. means for positioning said upper wiper blades relative to said lower wiper blades, and e. means for positioning said intermediate wiper blades relative to said lower wiper blades.
Claim 12
Independent Claim
152 words
A device for automatically cleaning a window sash or the like comprising: a. support means having b. housing means thereon, c. means mounted on said support means for transporting a window sash Upon the support means and through the housing means, d. means carried by the support means for guiding the sash through the housing, as it is transported e. means carried by the support means for cleaning the sash with a liquid as it is transported upon the support means and through said housing means, f. means for collecting the liquid used in cleaning the sash, g. said cleaning means including an upper housing through which the upper frame edge of the sash passes, h. a lower housing through which the lower frame edge of the sash passes, i. means for creating a partial vacuum in said upper housing, and j. means for creating a partial vacuum in said lower housing.
Claim 13
Independent Claim
152 words
A device for automatically cleaning a window sash or the like comprising: a. support means having b. housing means thereon, c. means mounted on said support means for transporting a window sash Upon the support means and through the housing means, d. means carried by the support means for guiding the sash through the housing, as it is transported e. means carried by the support means for cleaning the sash with a liquid as it is transported upon the support means and through said housing means, f. means for collecting the liquid used in cleaning the sash, g. said cleaning means including an upper housing through which the upper frame edge of the sash passes, h. a lower housing through which the lower frame edge of the sash passes, i. means for creating a partial vacuum in said upper housing, and j. means for creating a partial vacuum in said lower housing.
Claim 14
Dependent Claim
24 words
The device of claim 10 in which a. said upper housing is adjustable relative to said transport rollers to accomodate sashes of different widths.
Claim 15
Independent Claim
124 words
A device for automatically cleaning a window sash or the like comprising: a. support means having b. housing means thereon, c. means mounted on said support means for transporting a window sash upon the support means and through the housing means, d. means carried by the support means for guiding the sash through the housing, as it is transported e. means carried by the support means for cleaning the sash with a liquid as it is transported upon the support means and through said housing means, f. means for collecting the liquid used in cleaning the sash, and g. said cleaning means including upper and lower spaced partial vacuum means for removing cleaning liquid from the upper and lower frame edges of the sash.
Claim 16
Independent Claim
124 words
A device for automatically cleaning a window sash or the like comprising: a. support means having b. housing means thereon, c. means mounted on said support means for transporting a window sash upon the support means and through the housing means, d. means carried by the support means for guiding the sash through the housing, as it is transported e. means carried by the support means for cleaning the sash with a liquid as it is transported upon the support means and through said housing means, f. means for collecting the liquid used in cleaning the sash, and g. said cleaning means including upper and lower spaced partial vacuum means for removing cleaning liquid from the upper and lower frame edges of the sash.
Claim 17
Independent Claim
187 words
A device for automatically cleaning a window sash or the like comprising: a. support means having b. housing means thereon, c. means mounted on said support means for transporting a window sash upon the support means and through the housing means, d. means carried by the support means for cleaning the sash with a liquid as it is transported upon the support means and through the housing means, e. said cleaning means including brushes and f. wiper blades mounted within the housing for wiping the sash after it is contacted by said brushes, g. an upper housing through which the upper frame edge of the sash passes, h. a lower housing through which the lower frame edge of the sash passes, i. means for creating a partial vacuum in said upper housing, j. means for creating a partial vacuum in said lower housing, k. said upper housing adjustable relative to said transporting means to accommodate sashes of different widths, and, l. said blades include upper and lower, the uppermost of said blades being mounted on and carried by said upper housing for wiping sashes of different widths.
Claim 18
Independent Claim
187 words
A device for automatically cleaning a window sash or the like comprising: a. support means having b. housing means thereon, c. means mounted on said support means for transporting a window sash upon the support means and through the housing means, d. means carried by the support means for cleaning the sash with a liquid as it is transported upon the support means and through the housing means, e. said cleaning means including brushes and f. wiper blades mounted within the housing for wiping the sash after it is contacted by said brushes, g. an upper housing through which the upper frame edge of the sash passes, h. a lower housing through which the lower frame edge of the sash passes, i. means for creating a partial vacuum in said upper housing, j. means for creating a partial vacuum in said lower housing, k. said upper housing adjustable relative to said transporting means to accommodate sashes of different widths, and, l. said blades include upper and lower, the uppermost of said blades being mounted on and carried by said upper housing for wiping sashes of different widths.
Claim 19
Independent Claim
26 words
The device of claims 13 in which a. said blades includes intermediate blades, and b. means for positioning said intermediate blades relative to said lower blade.
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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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |