US4658449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proctective adapter for pool drain
Assignee: Individual
•
Filing: 1985-09-19
•
Granted: 1987-04-21
•
Expires: 2005-09-19
Abstract
Abstract An adapter for pool drains, including a primary mounting frame secured onto the pool drain with a plurality of arms radiating inwardly and raised to interconnect the second mounting ring. There is further provided a grill work or second secured to the surface of the apparatus for defining a raised screening surface for screening any water flowing into the drain to prevent whirlpooling effect in the drain. Further, the apparatus is adapted for various size drains and is easily removable and set in place.
Inventors
- 👤 Daniel R. Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:04
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/12; E04H4/1209; E04H4/1236
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
146 words
An apparatus adaptable onto the drain of a pool for disturbing the water prior to the water entering the pool drain, comprising: a. a primary frame member positioned flush against the pool floor, and having a pair of mounting arms secured to the pool drain; b. a second upper frame member raised above the primary frame member, said second upper frame member and primary frame member being of sufficient width to at least cover the broadest opening of the pool drain; c. a plurality of radiating arms rigidly interconnecting the primary frame member and the upper frame member said radiating arms defining a raised surface above the pool drain; and d. means interconnecting the radiating arms and the upper frame member for defining a continuous screen substantially above the pool drain so that water entering the pool drain must first enter the screen in its flow.
Claim 2
Independent Claim
146 words
An apparatus adaptable onto the drain of a pool for disturbing the water prior to the water entering the pool drain, comprising: a. a primary frame member positioned flush against the pool floor, and having a pair of mounting arms secured to the pool drain; b. a second upper frame member raised above the primary frame member, said second upper frame member and primary frame member being of sufficient width to at least cover the broadest opening of the pool drain; c. a plurality of radiating arms rigidly interconnecting the primary frame member and the upper frame member said radiating arms defining a raised surface above the pool drain; and d. means interconnecting the radiating arms and the upper frame member for defining a continuous screen substantially above the pool drain so that water entering the pool drain must first enter the screen in its flow.
Claim 3
Dependent Claim
24 words
The apparatus in claim 1, wherein the pair of mounting arms further comprise means for attaching to various size and shapes of pool drains.
Claim 4
Dependent Claim
23 words
The apparatus in claim 2, wherein the means interconnecting the radiating arms in the upper frame further comprises wire mesh or grill work.
Claim 5
Dependent Claim
41 words
The apparatus in claim 3, wherein the perimeter frame is of much greater diameter than the pool drain, and the upper frame is substantially of equal diameter to the pool drain located approximately 3 to 4 inches above the pool drain.
Claim 6
Dependent Claim
25 words
The apparatus in claim 4, wherein the radiating arms radiate inward from the primary frame at an angle of approximately 30 degrees above the horizontal.
Claim 7
Dependent Claim
151 words
An adapter for pool drains, comprising: a. a substantially circular perimeter frame mounted on the pool surface and of much greater diameter than the pool drain; b. a pair of parallel arm members extending within the perimeter frame for rigidly securing the frame to the pool drain; c. a plurality of radiating arms extending inwardly from the primary frame at an angle approximately 30 degrees above the horizontal and converging substantially to the center of the primary frame; d. a mounting ring secured to the end portions of the radiating arms, for defining a drain surface substantially 3 to 4 inches above th pool drain; and e. grill means substantially covering the surface area defined by the radiating arms and mounting ring, for screening any flow of water into the pool drain at a point above the pool drain to disturb the flow and prevent a whirlpooling effect into the drain.
Claim 8
Dependent Claim
151 words
An adapter for pool drains, comprising: a. a substantially circular perimeter frame mounted on the pool surface and of much greater diameter than the pool drain; b. a pair of parallel arm members extending within the perimeter frame for rigidly securing the frame to the pool drain; c. a plurality of radiating arms extending inwardly from the primary frame at an angle approximately 30 degrees above the horizontal and converging substantially to the center of the primary frame; d. a mounting ring secured to the end portions of the radiating arms, for defining a drain surface substantially 3 to 4 inches above th pool drain; and e. grill means substantially covering the surface area defined by the radiating arms and mounting ring, for screening any flow of water into the pool drain at a point above the pool drain to disturb the flow and prevent a whirlpooling effect into the drain.
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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) | 1990-04-20 | 1990-10-20 | 1991-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-20 | 1994-10-20 | 1995-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-20 | 1998-10-20 | 1999-04-21 | $7700.00 | Window Closed / Lapsed |