Head cover trimming system
AssigneeJEG, Inc.
InventorEdward McNulty
Life of this patent
Estimating the term…
Abstract
A head cover trimming system for trimming around a ground level head cover includes a head cap and a grass trimmer assembly. The head cap is provided on the head cover and includes a centering member. The grass trimmer assembly includes a head member having a peripheral edge portion along which is mounted a cutting element. The grass trimmer assembly is driven through a drive shaft connected to a rotary tool at one end. Arranged within the head member is a retractable centering shaft. When the head member is placed over the head cover, the centering shaft is received by the centering member to center the grass trimmer about the head cover. The centering shaft retracts into the head member to allow the rotating cutting element to trim the area around the head cover.
Claims21
A head cover trimming system for cutting grass around a substantially ground level sprinkler head comprising:
- a sprinkler head including a housing having a top cover portion and a buried body portion;
- a head cap provided on the sprinkler head, said head cap including a main body portion fixed to the top cover portion of the housing, said main body portion including a top surface provided with a centering member;
- and
- a cutting head system including:
- a head member having a peripheral edge portion interconnected to a central hub through an intermediate web portion, said head member being adapted to extend about the sprinkler head;
- a cutting element projecting from the peripheral edge portion of the head member;
- a drive shaft member having a driven end portion extending to a driving end portion, said driving end portion being drivingly connected to the head member;
- and
- a centering element extending within the head member and projecting beyond the cutting element, said centering element being adapted to engage with the centering member of the head cap to center the head member about the sprinkler head such that, upon application of a driving force to the driven end portion of the drive shaft, the head member rotates about the sprinkler head causing the cutting element to trim around the sprinkler head.
A cutting head system adapted to be rotated in order to trim around a head cover having a head cap provided with a centering member comprising:
- a head member having a peripheral edge portion interconnected to a central hub through an intermediate web portion, said head member being adapted to extend about a head cover;
- a cutting element projecting from the peripheral edge portion of the head member;
- a drive shaft member having a driven end portion extending to a driving end portion, said driving end portion being drivingly connected to the head member;
- and
- a centering element extending within the head member and projecting beyond the cutting element, said centering element being adapted to engage with the centering member of the head cap to center the head member about the head cover such that, upon application of a driving force to the driven end portion of the drive shaft, the head member rotates about the head cover causing the cutting element to trim grass growing around the head cover.
A head cap for use in connection with trimming about a substantially ground level head cover comprising:
- a main body portion adapted to be fixed to a ground level head cover, said main body portion including a top surface;
- and
- a centering member provided on the top surface of the main body portion, said centering member being adapted to engage with a centering shaft of a grass trimmer to center the grass trimmer over the head cover.
A method of trimming around a ground level head cover comprising:
- centering a cutting head member, including a cutting blade, over the ground level head cover by engaging a retractably mounted centering element, attached to the cutting head member, with a centering member on the ground level head cover;
- shifting the cutting head downward, with the centering element retracting into the cutting head member to allow the cutting blade to be positioned about the ground level head cover;
- rotating the cutting blade about the ground level head cover;
- and
- lifting the cutting head member from the sprinkler head.
Dependencies are inferred from the claim text.