Filter wrench
AssigneeDeere & Company
InventorWilliam J. Sikula, Jr.
Life of this patent
Estimating the term…
Abstract
A filter wrench includes a cylindrical housing with internal lugs and a centrally positioned punch for draining and removing a screw-on filter having an outer canister and an inner filter element. As the housing is impactively positioned over the filter, the punch successively punctures the outer canister and then the inner filter element before the lugs indent the outer canister and the bottom of the housing abuts the canister. With the punch extending through the punctures, the housing is held on the filter while the outer canister and the inner filter element are drained through passages in the punch and an outlet in the housing. When draining is complete, a formed nut on the outside of the housing allows the filter wrench to be rotated causing the lugs to rotate the filter for removal.
Claims14
A filter wrench for draining and removing a fluid filter having an outer canister and an inner filter element from a filter utilizing device, comprising:
- a housing having a closed bottom and an open top sized to encircle and engage said fluid filter, said housing having gripping means provided on the inside thereof for gripping portions of said outer canister when said housing engages said fluid filter, and said housing having rotating means provided thereon for rotating said housing for removal of said fluid filter;
- punch means secured to said housing extending from the bottom thereof for puncturing said outer canister when said housing engages said fluid filter, said punch means having outer passage means provided therein for allowing the passage of fluid from said outer canister into said housing;
- and outlet means provided in said housing at the bottom thereof for allowing the drain of fluid therefrom.
A filter wrench for draining and removing an oil filter having an outer canister and an inner filter element from an internal combustion engine, comprising:
- a cylindrical housing having a closed bottom and an open top sized to encircle and engage said oil filter, said housing having lug means provided on the inside thereof for indenting portions of said outer canister when said housing engages said oil filter, and said housing having rotating means provided thereon for rotating said housing for removal of said oil filter;
- punch means secured to said housing extending from the bottom thereof for puncturing said outer canister when said housing engages said oil filter, said punch means having a reduced portion provided therein for allowing the passage of oil from said outer canister into said housing;
- and outlet means provided in said housing at the bottom thereof for allowing the drain of oil therefrom.
Dependencies are inferred from the claim text.