Filter changing device

Details Filter changing device Filter changing device

1994-01-03

1995-04-11

Cherry, Johnny D.

Handling: hand and hoist-line implements

Hand bars and hand barrows

Ball retriever

294 26, A47F 1306, B25G 104

Patent

active

054051770

ABSTRACT:
The filter changing device is a rectangular device comprised of a rear and front piece with an elongated slot of 1/4" in diameter to the front piece. This helps guide a movable insert within the rectangular device to extend to various lengths. The insert is locked in place by a 1/4.times.20 welded stud affixed to the flexible insert. A washer and wing nut help hold the flexible insert in place to secure the front and rear piece by the means of a dimple-like indentation on left and right.

REFERENCES:
patent: 1500550 (1924-07-01), D'Hondt
patent: 1701771 (1929-02-01), Stefano
patent: 1724435 (1929-08-01), Studwell
patent: 2685876 (1954-08-01), Sanderson
patent: 3222095 (1965-12-01), Gerus
patent: 3323826 (1967-06-01), Crowley
patent: 3531148 (1970-09-01), Rohde
patent: 4019769 (1977-04-01), Filion
patent: 5171052 (1992-12-01), Cunningham

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