US3818538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Washing apparatus
Assignee: Industrial Broderna Larsson AB
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Filing: 1972-10-30
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Granted: 1974-06-25
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Expires: 1992-10-30
Abstract
Abstract This invention relates to a washing apparatus by which a washing medium is applied to a surface to be washed and removed from said surface by suction. The invention is concerned with a special construction of the means for coupling a multi-channel hose to a source of washing medium under pressure and a source of vacuum at one end and to a nozzle head both for spreading the washing medium onto the surface and for removing used medium from the surface at the other end. The apparatus is especially but not exclusively designed for washing the skin surface of bed ridden patients in a sick bed. The washing apparatus according to the invention comprises hose connecting members mounted on each end of a multi-channel hose with screw or bayonet coupling means and corresponding bayonet coupling sockets both on the nozzle head and on the source. The invention also comprises different types of nozzle heads and other details of construction of the connecting and coupling means between the source, the multichannel hose and the nozzle heads and of valve means for shutting off the flow of pressure medium through the hose.
Inventors
- 👤 S Kraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:17
CPC Classifications
F; F16; F16L; F16L39/00; F16L39/02; A; A47; A47K; A47K7/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
205 words
In a washing apparatus for applying a washing medium to a surface to be washed and for removing the used washing medium and loosened dirt from said surface through a multi-channel hose having connections for coupling the hose at one end to a source of washing medium under pressure and a source of vacuum for evacuating used washing medium, and at the other end to a nozzle head for spreading the washing medium onto the surface to be washed and for sucking up the used washing medium from the surface; the improvement comprising a hose connecting member mounted on at least said one end of said multi-channel hose and comprising a tubular handle having coupling means at its forward end, and immediately inwardly thereof a coupling member rotatably but axially unmovably mounted within said handle, connection sleeves on said coupling member projecting inwardly into the ends of the different channels of the multi-channel hose and outwardly projecting connection sleeves on said coupling member communicating with said inwardly projecting sleeves, a coupling socket on the nozzle head for connection with said coupling means of the handle, said socket having openings receiving the outwardly projecting connection sleeves, said openings communicating respectively with said pressure and vacuum sources.
Claim 2
Dependent Claim
205 words
In a washing apparatus for applying a washing medium to a surface to be washed and for removing the used washing medium and loosened dirt from said surface through a multi-channel hose having connections for coupling the hose at one end to a source of washing medium under pressure and a source of vacuum for evacuating used washing medium, and at the other end to a nozzle head for spreading the washing medium onto the surface to be washed and for sucking up the used washing medium from the surface; the improvement comprising a hose connecting member mounted on at least said one end of said multi-channel hose and comprising a tubular handle having coupling means at its forward end, and immediately inwardly thereof a coupling member rotatably but axially unmovably mounted within said handle, connection sleeves on said coupling member projecting inwardly into the ends of the different channels of the multi-channel hose and outwardly projecting connection sleeves on said coupling member communicating with said inwardly projecting sleeves, a coupling socket on the nozzle head for connection with said coupling means of the handle, said socket having openings receiving the outwardly projecting connection sleeves, said openings communicating respectively with said pressure and vacuum sources.
Claim 3
Dependent Claim
89 words
An apparatus as claimed in claim 1, characterized in that it further comprises a guiding element mounted within the handle at the inside of the coupling member, said guiding element, which encloses the forward end of the multi-channel hose connected to the inwardly projecting coNnection sleeves of the coupling member, is rotatably guided within the handle and has a retractable abutment and valve member which in an inwardly retracted position squeezes at least one of the channels of the multi-channel hose leading the washing medium to the nozzle head.
Claim 4
Dependent Claim
48 words
An apparatus as claimed in claim 2, characterized in that the guiding element is rotatably guided within the handle between the coupling member and abutments on the inside of the handle, said guiding element having outwardly directed guide pins engaging holes in the disc of the coupling member.
Claim 5
Dependent Claim
57 words
An apparatus as claimed in claim 2, characterized in that the retractable abutment on the guiding element is made integrally with the wall of the guiding element and is connected with said wall by a thin web forming both a hinge connection and a spring for resiliently turning the abutment to project outwardly from the guiding element.
Claim 6
Dependent Claim
71 words
An apparatus as claimed in claim 2, characterized in that the handle thereof has a side opening which is covered by a tongue formed integral integrally at one end with the wall of the handle and forming a finger grip cooperating with the abutment in its position facing said side opening for depressing the abutment into the position for shutting off at least one of the channels of the multi-channel hose.
Claim 7
Dependent Claim
69 words
An apparatus as claimed in claim 1, characterized in that the coupling member comprises a circular disc from the inner and outer faces of which the connection sleeves project axially inwardly and outwardly, respectively, said disc having a peripheral groove along its edge, which groove cooperates with peripheral projections immediately inside the coupling means in the handle for maintaining the coupling member rotatably but axially unmovably within the handle.
Claim 8
Dependent Claim
108 words
An apparatus as claimed in claim 1, characterized in that the nozzle head comprises a socket, a spoon-shaped casing fixedly connected with said socket, the inside of said casing communicating freely with the opening of the socket connectible with the suction channel of the multi-channel hose, a plate covering the open side of said spoon-shaped casing with the exception of a narrow slit along the edge of the casing, a longitudinal channel in said plate, a connection passage between said longitudinal channel and the washing medium admitting openings in the socket, and outlet holes for the washing medium connecting said longitudinal channel with the outside of said plate.
Claim 9
Dependent Claim
104 words
An apparatus as claimed in claim 1, characterized in that the nozzle head comprises a tubular casing, one end of which is integral with a socket and communicates with the opening of the socket connectible with the suction channel of the multi-channel hose, the other end of the casing being covered by a suction nozzle with an inner suction channel connected to a filter bag inside the casing, another opening of the socket being connected through a valve operable from the outside and through a channel extending along the length of the casing with a spray nozzle on the outside of the suction nozzle.
References Cited (Backward Citations)
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GB1156031A
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US3574239A
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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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |