US 10,518,202 B2Granted

Filter system

AssigneeBullfrog International, LC

InventorsEric Hales, Mark W. McLane

Life of this patent

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Abstract

A system for filtering water in a spa that provides safety and greater filtration. The system may include a filter secured to a core. The core may include first and second cages with a plurality of openings allowing water to freely pass through the filter and core while preventing larger objects from passing through. The first cage may provide an orientation feature to position the filter in one direction. The second cage may hold mineral cartridges. The core may be secured to a fitting that is secured to the suction line of a spa via a ratchet-like engagement feature. The fitting and core prevent back out of the core unless manually overriding the arm on the core which engages fins on the fitting. The filter may be removed and replaced while the core remains in place providing safety to the user. A cap secures the whole assembly into place.

Claims8

Dependent claims

A filter system comprising:

a core comprising:
a proximal portion and a distal portion with a first cage having a tubular body with a plurality of openings positioned between the proximal portion and the distal portion;
a second cage having a tubular body with a plurality of openings separate from the first cage, the second cage positioned toward the distal portion within the first cage, wherein the second cage is configured to receive a cartridge;
a fitting positioned toward the proximal portion of the core, the fitting comprises a hole passing through a center thereof and a plurality of fins positioned at a cage facing end of the fitting and configured to engage an arm of the core positioned toward the proximal portion wherein the fins allow one-way advancement of the core onto the fitting;
a cap positioned toward the distal portion of the core;
a filter with a channel passing therethrough;
and
a shoulder positioned toward the proximal portion, the shoulder extending circumferentially from the core.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/361,892Filed 28 Nov 2016
Published: US 2018/0147510 A131 May 2018
Granted: 31 Dec 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification23 codes

B01D 35/306
Filter housing constructions: filter mounting adapter
B01D 29/15
Supported filter elements: arranged for inward flow filtration
B01D 29/21
Arranged for inward flow filtration: with corrugated, folded or wound sheets
B01D 35/143
Safety devices specially adapted for filtration ; Devices for indicating clogging: filter condition indicators