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US 2006/0130289 A1Published application
Telescoping fastener
AssigneeIllinois Tool Works Inc.
InventorRichard Tracy
Life of this patent
Estimating the term…
Abstract
A telescoping fastener includes a debris clearance and drain port in a housing of the fastener, and a plunger operable in the housing to move contaminants toward the port for removal. A force concentrating tip breaks up snow, ice or accumulated debris. Relief channels in the plunger facilitate movement of contaminants around the plunger and movement of the plunger through contaminants within the housing.
Claims20
A telescoping fastener comprising:
- a housing defining a vessel;
- a plunger movable in said vessel;
- a port in said housing from an interior volume of said vessel to an ambient environment of said vessel;
- and
- an end of said plunger configured for moving contaminant material in said vessel toward said port.
2 more elements
A telescoping fastener comprising:
- a housing defining a debris clearance and liquid drain port;
- a plunger configured to slide in said housing, said plunger including a body having an outer surface adjacent said housing;
- channels in said outer surface of said body to accommodate movement of said plunger through debris in said housing;
- and
- said channels formed in at least about 25% or more of a surface area of said body.
2 more elements
A telescoping fastener comprising:
- a housing and a plunger slidable relative to said housing, said plunger and said housing defining a substantially enclosed vessel area;
- a debris removal and drain port disposed in said housing and establishing flow communication between said vessel area and an ambient environment;
- and
- said plunger including a debris removal extension configured to move debris toward said port.
1 more element
Dependencies are inferred from the claim text.