Mine Safety Appliances Company

Paul A Zeller

Gregoire Aby-Eva

Kevin R Ketterer

Roger P Wolf

Layton A Wise

Klaus Schmidtke

F Joseph Hersick

James A Hendrickson

Thomas M Salapow

Mark Cavaliere

Glenn C Davis

Anthony Scoccimerra, Jr

Robert E Bechtold

Eileen A Kiefer

Klaus Schmidke

James G Tomlinson

Gregoire B Aby-Eva

A headband for use in a headgear support includes a first end section having a plurality of spaced connectors and a second end section including a fastener attached adjacent the end thereof. The fastener includes a connecting member to which at least one cooperating connector is attached. The connecting member biases the cooperating connector in an engagement position with at least one of the plurality of connectors of the first end section to hold the headband in a selected loop configuration. The fastener further includes at least a first flexible release member. Upon application of a force to the first release member, the first flexible release member is movable to a release position (or range of positions) in which the first release member abuts the connecting member to cause the connecting member to flex to a disengage position (or range of positions) in which the cooperating connector is disengaged from the at least one the plurality of connectors of the first end section to enable increasing the size of the loop of the headband.

Adjustable headband

The present invention provides an air-purifying respirator facepiece with a removable, one-piece filter element connector. It also has a removable component housing in the lens as well as a nosecup without inhalation valves that prevents fogging of the portion of the lens used for viewing.

Respirator facepieces

A headband for use in a headgear support includes a first end section having a plurality of connectors extending latitudinally from a lateral surface of the first end section. The headband also includes a second end section having a fastener attached adjacent the end thereof. The fastener includes a flexible lever arm and a cooperating connector biased in an engagement position with at least one of the plurality of connectors of the first end section to hold the headband in a selected loop configuration. The flexible lever arm is movable to a release position upon application of force thereto to cause the cooperating connector to disengage from the at least one the plurality of connectors of the first end section to enable increasing the size of the loop of the headband. The plurality of connectors of the first end section can, for example, be ratchet teeth.

A suspension for a protective helmet having a headband section that encompasses at least a part of a user's head and a crown support section connected to the headband section. The headband section and the crown support section of the suspension are fabricated from an integral piece of material. The suspension system may also have a headband comprising a section of elastic material. Alternatively, the headband may comprise a forward band having a first section to contact the forehead of the user and a second section adapted to be positioned between the user's head and the crown support section of the suspension during use thereof.

Suspension for protective headgear

The present invention provides a flexible respirator filter having substantially coextensive front and back portions of filter material which are sealed to each other along their periphery, forming a sealed edge. A flexible plastic frame is contained within the front and back portions to form a plenum between the front and back portions of filter material. The frame has a peripheral edge which remains adjacent to the sealed edge of the filter material along substantially the entire length of the sealed edge to provide sufficient rigidity to prevent crushing while at the same time providing sufficient flexibility to fit under other personal protective equipment. A connector for attaching the filter to the respirator mask is formed integrally with the frame such that it protrudes through the back portion of the filter material. A plurality of recesses are also formed integrally with the frame to facilitate grasping the filter without crushing or damaging it.

Flexible respirator filter

Growing community of inventors

Pittsburgh, PA, United States of America

Paul A Zeller