Interlock device

Patent metadata

Field	Value
Publication number	US-9352257-B2
Application number	US-201313755938-A
Country	US
Kind code	B2
Filing date	Jan 31, 2013
Priority date	Jan 31, 2012
Publication date	May 31, 2016
Grant date	May 31, 2016

Abstract

The current technology relates to an interlock device having a compression assembly and a fitting. The compression assembly has a first end, a second end, a locked position, and an unlocked position. A bayonet coupling defines the locked position of the compression assembly in a first position and defines the unlocked position of the compression assembly in a second position. A spring is compressibly disposed between the first compression assembly end and the second compression assembly end. The fitting is disposed on the second compression assembly end, and the fitting is configured to receive a filter receptacle. The compression assembly is configured to engage with a mating filter cartridge.

First claim

I claim:

1. A filter cartridge comprising:
a first end cap having an extension portion;
a tubular construction of filter media defining a cylindrical open filter interior having:
a first end coupled to the first end cap and
a second end;
a second end cap coupled to the second end of the filter media;
a key coupled to the extension portion of the first end cap, wherein the key is configured to engage a filter receptacle assembly, wherein the key is rotatable with respect to the extension portion, and wherein the key is disposed within the cylindrical open filter interior defined by the filter media; and
wherein the extension portion of the first end cap projects toward the second end cap and into the cylindrical open filter interior defined by the filter media.

2. The filter cartridge of claim 1 wherein the key is cylindrical, defines an inner annular surface, and defines one or more protrusions extending from the inner annular surface.

3. The filter cartridge of claim 2 , wherein the key defines two or more protrusions extending from the inner annular surface.

4. The filter cartridge of claim 3 , wherein the key defines a distal end and at least two of the two or more protrusions are different distances from the distal end of the key.

5. The filter cartridge of claim 3 , wherein at least two of the two or more protrusions are less than 90 degrees apart radially along the inner annular surface.

6. The filter cartridge of claim 1 , wherein the extension portion has a distal end defining a key receptacle in receipt of the key.

7. The filter cartridge of claim 6 , wherein the key receptacle defines a non-continuous inner annular surface.

Assignees

• Donaldson Co Inc

Inventors

• Sharma Piyush

Classifications

• B01D2201/4015

  Bayonet connecting means · CPC title

• B01D29/96

  in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters (B01D29/09, B01D29/70 take precedence) · CPC title

• B01D29/21

  with corrugated, folded or wound sheets · CPC title

• B01D2201/4046

  Means for avoiding false mounting of different parts · CPC title

• B01D35/30 Primary

  Filter housing constructions · CPC title