Patent US4082676A successfully refreshed from Google Patents.
US4082676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dirt filter for water pipes
Assignee: Individual
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Filing: 1977-03-16
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Granted: 1978-04-04
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Expires: 1997-03-16
Abstract
Abstract The invention relates to a dirt filter for water pipes of the type used for carrying water for household and industrial use. The filter defines inlet and outlet chambers with an apertured dividing wall therebetween. An upper lid and a lower dirt collecting container and attached with threaded connections to the housing. A filter insert is disposed between the lid and the dividing wall and the insert has a carrier with upper and lower cylinder rings which respectively engage the lid and the chamber dividing wall. The interior of the filter has fluid communication with the inlet chamber through the opening in the chamber dividing wall. An annular, cup shaped insert keeps the flow in the inlet chamber away from the interior of the dirt collecting container but permits the drop of dirt into this container.
Inventors
- 👤 Viktor Dulger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:28
CPC Classifications
B; B01; B01D; B01D36/00; B01D36/04; B01D35/00; B01D35/02; B01D35/04; B01D35/043; B01D2201/00; B01D2201/30; B01D2201/309
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
172 words
A dirt filter for water pipes defining a housing with lower and upper chambers having an inlet and an outlet respectively, a dividing wall with an opening therein separating said chambers, a lid closing the upper side of said upper chamber, said lid having a cylindrical collar with outer threads, a dirt collecting container below said lower chamber and having outer threads at its upper part, said housing defining internally threaded collars for threaded connection with said lid and said container, a cylindrical filter insert in said upper chamber having a carrier with an upper ring in sealing engagement with said collar of said lid and a lower ring engaging said dividing wall, the interior of said filter insert being in fluid communication with said lower chamber, said housing defining a dirt egress opening in its lower wall providing fluid communication between said lower chamber and said dirt collecting container, and an annularly shaped baffle insert having a central opening and being positioned in the upper part of said dirt collecting container.
Claim 2
Dependent Claim
172 words
A dirt filter for water pipes defining a housing with lower and upper chambers having an inlet and an outlet respectively, a dividing wall with an opening therein separating said chambers, a lid closing the upper side of said upper chamber, said lid having a cylindrical collar with outer threads, a dirt collecting container below said lower chamber and having outer threads at its upper part, said housing defining internally threaded collars for threaded connection with said lid and said container, a cylindrical filter insert in said upper chamber having a carrier with an upper ring in sealing engagement with said collar of said lid and a lower ring engaging said dividing wall, the interior of said filter insert being in fluid communication with said lower chamber, said housing defining a dirt egress opening in its lower wall providing fluid communication between said lower chamber and said dirt collecting container, and an annularly shaped baffle insert having a central opening and being positioned in the upper part of said dirt collecting container.
Claim 3
Dependent Claim
32 words
A dirt filter for water pipes according to claim 1 wherein a flange for engagement with the periphery of said dividing wall opening surrounds said lower ring of said filter insert carrier.
Claim 4
Dependent Claim
17 words
A dirt filter for water pipes according to claim 1 wherein said annularly shaped insert is cup-shaped.
References Cited (Backward Citations)
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Cited
US1673391A
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US2108798A
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US2823804A
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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) | 1981-04-03 | 1981-10-03 | 1982-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-03 | 1985-10-03 | 1986-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-03 | 1989-10-03 | 1990-04-04 | $7700.00 | Window Closed / Lapsed |