Patent US3175316A successfully refreshed from Google Patents.
Patent US4312093A successfully refreshed from Google Patents.
US4312093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window cleaning device
Assignee: Individual
•
Filing: 1979-10-09
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Granted: 1982-01-26
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Expires: 1999-10-09
Abstract
Abstract A window cleaning device includes a moistening member, a wiper blade and a handle, all of which are secured to a body member. The moistening member consists of a number of layers of a permeable skin which is wound without a core for holding a cleaning liquid, the skin having hair thereon for breaking a dirt film on a surface to be cleaned. The moistening member fits within a concave surface portion on the body member, the body member having a projecting edge extending longitudinally beneath the moistening member to prevent liquid from being discharged downwardly and wasted while the device is operated. The amount of liquid which can be held by the moistening member is thereby substantially increased.
Inventors
- 👤 Hans Raab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:51
CPC Classifications
A; A47; A47L; A47L1/00; A47L1/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
203 words
A window cleaning device comprising an elongated body member having a concave surface portion extending longitudinally on one side thereof, said surface portion having an edge which extends in the long direction of said body member, an elongated moistening member mounted on said concave portion for holding a cleaning liquid, said moistening member being formed of a liquid permeable material which is convolutely wound into an elongate shape, said liquid permeable material comprising a base layer and a pile layer secured to said base layer, said pile layer including hairs thereon of sufficient hardness to break dirt film on a surface to be cleaned by said device, a wiper blade detachably mounted to said body member for wiping liquid transferred from said moistening member onto the surface to be cleaned, said blade extending in the long direction of said body member, and a handle extending from said body member to enable said moistening member and said wiper blade to be operatively drawn over the surface to be cleaned wherein said edge contacts and forms a partial support for said moistening member to prevent liquid from being discharged downwardly therefrom, thereby increasing the amount of liquid which can be stored by said moistening member.
Claim 2
Dependent Claim
203 words
A window cleaning device comprising an elongated body member having a concave surface portion extending longitudinally on one side thereof, said surface portion having an edge which extends in the long direction of said body member, an elongated moistening member mounted on said concave portion for holding a cleaning liquid, said moistening member being formed of a liquid permeable material which is convolutely wound into an elongate shape, said liquid permeable material comprising a base layer and a pile layer secured to said base layer, said pile layer including hairs thereon of sufficient hardness to break dirt film on a surface to be cleaned by said device, a wiper blade detachably mounted to said body member for wiping liquid transferred from said moistening member onto the surface to be cleaned, said blade extending in the long direction of said body member, and a handle extending from said body member to enable said moistening member and said wiper blade to be operatively drawn over the surface to be cleaned wherein said edge contacts and forms a partial support for said moistening member to prevent liquid from being discharged downwardly therefrom, thereby increasing the amount of liquid which can be stored by said moistening member.
Claim 3
Dependent Claim
25 words
A window cleaning device according to claim 1, further including a band of burrs on said concave surface for releasably fastening said moistening member thereon.
Claim 4
Dependent Claim
18 words
A window cleaning device according to claim 1, wherein said moistening member is glued to said body member.
Claim 5
Dependent Claim
51 words
A window cleaning device according to claim 1, further including claw means for fixing said wiper blade relative to said body member, and a clamping screw extending through openings in said body member, said claw means and said handle for securing said claw means and said handle to said body member.
Claim 6
Dependent Claim
57 words
A window cleaning device according to claim 4, wherein the opening in said handle is elongated to extend in the long direction of said body member, and said clamping screw extends through said elongated opening so that said handle can be positioned relative to the long direction of said body member before said clamping screw is tightened.
Claim 7
Dependent Claim
26 words
A window cleaning device according to claim 1, further including screw members extending through said moistening member for mounting said moistening member on said body member.
Claim 8
Dependent Claim
54 words
A window cleaning device according to claim 1, further including an elongated support member having a lower rounded portion extending in the long direction of said support member for engaging said blade, said lower portion having a plurality of spaced apart openings therein for directing liquid collected by said blade onto said moistening member.
Claim 9
Dependent Claim
68 words
A window cleaning device according to claim 1, further including an elongated support member for mounting said wiper blade to said body member, said support member having a lower rounded portion including a lip extending in the long direction of said support member for engaging said blade, said lip having a plurality of spaced apart recesses therein for directing liquid collected by said blade onto said moistening member.
Claim 10
Dependent Claim
14 words
A window cleaning device according to claim 1, wherein said pile layer comprises polyester.
Claim 11
Dependent Claim
66 words
A window cleaning device according to claim 1, wherein said handle comprises an elongated grip including a swivel ball on one end of the grip, and an elongated clamping member arranged to support said body member and to pivotally engage said ball medially of the ends of said clamping member so that said grip can be swivelled to a desired positioned relative to said clamping member.
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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) | 1985-01-25 | 1985-07-27 | 1986-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-25 | 1989-07-27 | 1990-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-25 | 1993-07-27 | 1994-01-26 | $7700.00 | Window Closed / Lapsed |