Patent US3776465A successfully refreshed from Google Patents.
US3776465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid spray device
Assignee: General Electric Co
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Filing: 1972-08-17
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Granted: 1973-12-04
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Expires: 1992-08-17
Abstract
Abstract There is disclosed a dishwasher having an improved bearing and seal construction for the spray arm. The spray arm is mounted for limited vertical movement with respect to the outlet conduit of a pump. When pump pressure is applied to the spray arm, the spray arm is lifted out of load supporting engagement with the conduit and engages a seal which reduces liquid leakage around the spray arm. When pump pressure is interrupted the spray arm returns to the supported position, allowing the spray arm to drain. The spray arm is removably mounted onto the conduit to allow for servicing of the dishwasher.
Inventors
- 👤 P Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:24
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/14; A47L15/18; A47L15/22; A47L15/23
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
166 words
A dishwashing machine comprising a washing chamber; means for delivering washing liquid to the chamber including a source of pressurized washing liquid, a spray arm, conduit means for delivering washing liquid from the source to the spray arm; means removably mounting the spray arm on the conduit means for vertical movement between a first position supporting the arm on the conduit means and a second elevated position out of supported relation therewith and means providing a bearing operative in the second position for rotatably mounting the spray arm about a generally vertical axis; the removable mounting means comprising a member, mounted within the spray arm, removably connected to the conduit for captivating the spray arm between the first and second positions thereof and a closure removably connected to the spray arm providing access to the removable member; means for rotating the spray arm; and means responsive to pressurized washing liquid in the spray arm for raising the arm from the first position to the second position.
Claim 2
Dependent Claim
166 words
A dishwashing machine comprising a washing chamber; means for delivering washing liquid to the chamber including a source of pressurized washing liquid, a spray arm, conduit means for delivering washing liquid from the source to the spray arm; means removably mounting the spray arm on the conduit means for vertical movement between a first position supporting the arm on the conduit means and a second elevated position out of supported relation therewith and means providing a bearing operative in the second position for rotatably mounting the spray arm about a generally vertical axis; the removable mounting means comprising a member, mounted within the spray arm, removably connected to the conduit for captivating the spray arm between the first and second positions thereof and a closure removably connected to the spray arm providing access to the removable member; means for rotating the spray arm; and means responsive to pressurized washing liquid in the spray arm for raising the arm from the first position to the second position.
Claim 3
Dependent Claim
33 words
The dishwashing machine of claim 1 further comprising means for draining residual liquid from the spray arm as an incident of the spray arm returning from the second position to the first position.
Claim 4
Dependent Claim
37 words
The dishwashing machine of claim 1 further comprising means on the conduit means operative in the second position only for sealably engaging the spray arm and reducing liquid leakage between the spray arm and the conduit means.
Claim 5
Dependent Claim
19 words
The dishwashing machine of claim 2 wherein the closure comprises an extensible spray tower carried by the spray arm.
Claim 6
Dependent Claim
21 words
The dishwashing machine of claim 2 wherein the spray arm rotating means comprises symetrically disposed reaction nozzles in the spray arm.
Claim 7
Dependent Claim
12 words
The dishwashing machine of claim 2 wherein the closure is a cap.
Claim 8
Dependent Claim
49 words
The dishwashing machine of claim 2 wherein the spray arm provides an opening, defined by an edge, surrounding the conduit; the member provides a downwardly facing lip overlapping the edge; and the sealing means and the bearing means comprising a common low-friction member between the lip and the edge.
Claim 9
Dependent Claim
17 words
The dishwashing machine of claim 7 further comprising means for holding the low-friction member against the lip.
Claim 10
Dependent Claim
32 words
The dishwashing machine of claim 3 wherein the upper end of the conduit provides a plurality of spaced upwardly facing shoulder means for receiving the spray arm edge in load supported relation.
Claim 11
Dependent Claim
39 words
The dishwasher of claim 7 wherein the conduit means comprises a sleeve projecting through the bottom of the washing chamber, means for sealing the sleeve thereto and means removably connecting the sleeve to the bottom of the washing chamber.
Claim 12
Dependent Claim
60 words
The dishwashing machine of claim 4 wherein the member provides a handle extending toward the spray tower; and the spray tower comprises an outer conduit removably connected to the spray arm and an inner conduit for axial movement within the outer conduit, the inner conduit being in supported relation to the handle in the unextended position of the spray tower.
Claim 13
Dependent Claim
149 words
A dishwashing machine comprising a washing chamber; means for delivering washing liquid to the chamber including a source of pressurized washing liquid, a spray arm, and a conduit for delivering washing liquid from the source to the spray arm; means removably mounting the spray arm on the conduit for vertical movement between a first position supporting the arm on the conduit and a second elevated position out of supported relation therewith and means providing a bearing operative in the second position for rotatably mounting the spray arm about a generally vertical axis; the removable mounting means comprising a member for captivating the spray arm between the first and second positions thereof and means removably connecting the member to the conduit; means for rotating the spray arm; and means responsive to pressurized washing liquid in the spray arm for raising the arm from the first position to the second position.
Claim 14
Dependent Claim
149 words
A dishwashing machine comprising a washing chamber; means for delivering washing liquid to the chamber including a source of pressurized washing liquid, a spray arm, and a conduit for delivering washing liquid from the source to the spray arm; means removably mounting the spray arm on the conduit for vertical movement between a first position supporting the arm on the conduit and a second elevated position out of supported relation therewith and means providing a bearing operative in the second position for rotatably mounting the spray arm about a generally vertical axis; the removable mounting means comprising a member for captivating the spray arm between the first and second positions thereof and means removably connecting the member to the conduit; means for rotating the spray arm; and means responsive to pressurized washing liquid in the spray arm for raising the arm from the first position to the second position.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |