US4160427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aquarium waterfall
Assignee: Rolf C Hagen USA Corp
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Filing: 1978-01-20
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Granted: 1979-07-10
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Expires: 1998-01-20
Abstract
Abstract An aquarium waterfall composed of a base, vertical member and cap and wherein a lift tube extends from the base to the cap. A sand reservoir is formed in the base. An air tube operatively connected to the lift tube causes water to rise in the lift tube, and the water carries sand with it from the base to the cap where the mixture of sand and water is redirected in a downward direction toward the base over outcroppings in the vertical member to simulate a waterfall.
Inventors
- 👤 Arthur J. Holbrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:38
CPC Classifications
A; A01; A01K; A01K63/00; A01K63/003; A01K63/006
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
172 words
An aquarium waterfall comprising a base having a well for collecting sand particles, a vertical member secured to the base and having an outer surface that simulates a generally vertical rock formation over which water may fall, a lift tube secured to the base and having an opening at the lowest portion of the well and adapted to accept sand particles from the well, a pump and air hose mounted on the aquarium with the discharge end of the hose positioned to discharge air into the bottom of the lift tube, a cap secured to the top of the vertical member and having an inverted trough on its lower surface with a discharge end positioned over and in front of the forward face of the vertical member, the upper end of the lift tube discharging into the inverted trough, and a baffle at the discharge end of the inverted trough to direct the discharge of the lift tube downwardly over the face of the vertical member into the well in the base.
Claim 2
Dependent Claim
172 words
An aquarium waterfall comprising a base having a well for collecting sand particles, a vertical member secured to the base and having an outer surface that simulates a generally vertical rock formation over which water may fall, a lift tube secured to the base and having an opening at the lowest portion of the well and adapted to accept sand particles from the well, a pump and air hose mounted on the aquarium with the discharge end of the hose positioned to discharge air into the bottom of the lift tube, a cap secured to the top of the vertical member and having an inverted trough on its lower surface with a discharge end positioned over and in front of the forward face of the vertical member, the upper end of the lift tube discharging into the inverted trough, and a baffle at the discharge end of the inverted trough to direct the discharge of the lift tube downwardly over the face of the vertical member into the well in the base.
Claim 3
Dependent Claim
22 words
An aquarium waterfall as defined in claim 1 further characterized by said base and said cap being separable from the vertical member.
Claim 4
Dependent Claim
20 words
An aquarium waterfall as defined in claim 1 further characterized by said lift tube being disposed behind the vertical member.
Claim 5
Dependent Claim
50 words
An aquarium waterfall as defined in claim 3 further characterized by a socket in the base for supporting the lift tube, and an opening in the socket at the lowest point in the well in the base enabling sand in the well to enter the bottom of the lift tube.
Claim 6
Dependent Claim
150 words
An aquarium waterfall comprising a base having a well therein for collecting sand particles, a vertical member secured to the base and having an outer surface that simulates a generally vertical land formation over which water may fall, a lift tube secured to the base and having an opening at the lowest portion of the well and adapted to accept sand particles from the well, a pump and air hose mounted on the aquarium with the discharge end of the hose positioned to discharge air into the bottom of the lift tube, a cap mounted above the discharge end of the tube against which water and sand from the tube is discharged for turning the water and sand forwardly in front of the formation, and baffle means secured to the cap for redirecting water and sand discharged from the lift tube downwardly over the outer surface of the vertical formation.
Claim 7
Dependent Claim
150 words
An aquarium waterfall comprising a base having a well therein for collecting sand particles, a vertical member secured to the base and having an outer surface that simulates a generally vertical land formation over which water may fall, a lift tube secured to the base and having an opening at the lowest portion of the well and adapted to accept sand particles from the well, a pump and air hose mounted on the aquarium with the discharge end of the hose positioned to discharge air into the bottom of the lift tube, a cap mounted above the discharge end of the tube against which water and sand from the tube is discharged for turning the water and sand forwardly in front of the formation, and baffle means secured to the cap for redirecting water and sand discharged from the lift tube downwardly over the outer surface of the vertical formation.
Claim 8
Dependent Claim
34 words
An aquarium waterfall as defined in claim 5 further characterized by said cap and baffle means turning the water and sand discharged from the tube 180°, downwardly over the surface of the vertical member.
Claim 9
Dependent Claim
143 words
An aquarium waterfall comprising a base having a well therein for collecting sand particles, a vertical member secured to the base and having an outer surface that simulates a generally vertical rock formation over which water may fall, a lift tube secured to the base and having an opening at the lowest portion of the well and adapted to accept sand particles from the well, a pump and air hose mounted on the aquarium with the discharge end of the hose positioned to discharge air into the bottom of the lift tube, baffle means disposed over the upper end of the lift tube for redirecting water and sand discharged from the lift tube over the outer surface of the vertical member, and a cap secured to the top of the vertical member, said baffle means being formed in the bottom of the cap.
Claim 10
Dependent Claim
143 words
An aquarium waterfall comprising a base having a well therein for collecting sand particles, a vertical member secured to the base and having an outer surface that simulates a generally vertical rock formation over which water may fall, a lift tube secured to the base and having an opening at the lowest portion of the well and adapted to accept sand particles from the well, a pump and air hose mounted on the aquarium with the discharge end of the hose positioned to discharge air into the bottom of the lift tube, baffle means disposed over the upper end of the lift tube for redirecting water and sand discharged from the lift tube over the outer surface of the vertical member, and a cap secured to the top of the vertical member, said baffle means being formed in the bottom of the cap.
Claim 11
Dependent Claim
22 words
An aquarium waterfall as defined in claim 7 further characterized by means releasably securing the cap and base to the vertical member.
Claim 12
Dependent Claim
39 words
An aquarium waterfall as defined in claim 8 further characterized by means formed in the cap enabling air to escape from beneath the cap and rise in the form of bubbles to the surface of water in the aquarium.
Claim 13
Dependent Claim
26 words
An aquarium waterfall as defined in claim 7 further characterized by means securing the upper end of the lift tube in baffle means in the cap.
References Cited (Backward Citations)
US3057094A
Cited
US3390665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-09 | 1983-01-08 | 1983-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-09 | 1987-01-08 | 1987-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-09 | 1991-01-08 | 1991-07-10 | $7700.00 | Window Closed / Lapsed |