Keyed thread engagement on spin-on filter element

Patent metadata

Field	Value
Publication number	US-9446333-B2
Application number	US-201414175799-A
Country	US
Kind code	B2
Filing date	Feb 7, 2014
Priority date	Feb 7, 2013
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

Abstract

A filter element includes a ring of filtration media circumscribing a central axis and defining a central cavity. An annular end cap of the filter element is sealingly bonded at an end of the media. The end cap includes a central opening into the central cavity, and a lateral opening spaced laterally outward from the central opening. The central opening includes a threaded connection portion to enable the element to be spun-on to a complimentarily-threaded connection portion of a filter head. The connection portion of the central opening includes at least one axially-extending slot opening radially away from the connection portion.

First claim

What is claimed is:

1. A filter element, comprising:
a ring of filtration media circumscribing a central axis and defining a central cavity; and
an annular end cap sealingly bonded at an end of the media, the end cap including a central opening into the central cavity, and a lateral opening spaced laterally outward from the central opening, the central opening including a threaded connection portion to enable the element to be spun-on to a complimentarily-threaded connection portion of a filter head, the connection portion of the central opening including at least one angled slot extending at an angle offset from the central axis, and opening radially away from the connection portion.

2. The filter element of claim 1 , wherein the at least one angled slot extends from an axially-outer end of the connection portion to an axially-inner end of the connection portion.

3. The filter element of claim 1 , wherein the at least one angled slot is at least two angled slots circumferentially spaced around the connection portion.

4. The filter element of claim 1 , wherein the connection portion faces radially inward.

5. The filter element of claim 1 , wherein the at least one angled slot is as radially deep as a maximum depth of threads on the connection portion.

6. The filter element of claim 1 , wherein the threaded connection portion defines the central opening, and the at least one angled slot extends from an axially-outer end of the central opening to an axially-inner end of the central opening.

7. The filter element as in claim 1 , wherein the at least one angled slot extends through the threads of the connection portion.

8. A filter assembly comprising:
i) a filter head having an annular connection portion defining a connection axis, and
ii) the filter element of claim 1 , the connection portion of the filter head including a thread portion having complimentary threads to the threaded connection portion of the central opening, and a lock portion axially outward of the thread portion, the lock portion having at least one radially-projecting device sized so as to be received within at least one angled slot opening of the connection portion, when the filter element is spun-on to the filter head.

9. A filter element, comprising:
a ring of filtration media circumscribing a central axis and defining a central cavity; and

an annular end cap sealingly bonded at an end of the media, the end cap including a central opening into the central cavity, and a lateral opening spaced laterally outward from the central opening, the central opening including a threaded connection portion to enable the element to be spun-on to a complimentarily-threaded connection portion of a filter head, the connection portion of the central opening including at least one angled slot opening radially away from the connection portion, wherein the at least the one angled slot forms at least a portion of a helix.

Assignees

• Parker Hannifin Corp

Inventors

• Vercammen Michael P

Classifications

• B01D2201/4015

  Bayonet connecting means · CPC title

• B01D2201/295

  with projections extending in a radial outward direction, e.g. for use as a guide, spacing means · CPC title

• B01D2201/4053

  using keys · CPC title

• B01D27/10

  Safety devices, e.g. by-passes · CPC title

• B01D2201/4061

  between a cartridge and a filter head or manifold · CPC title