The Ensign-Bickford Company

Other

Daniel A Toro

Brendan M Welch

Lyman G Bahr

Daniel P Sutula, Jr

Thomas C Tseka

Steven L Renfro

Ronald M Dufrane

Ernest L Gladden

Ronald D Thomas

James E Fritz

Thomas F Lilley, Jr

Frank J Lucca

Scot P Riley

Charles A Dieman, Jr

Jeffrey H Burton

An adjustable hat bill having a first link and a second link. The first link has a first link male member and defines a first link female receiving area. The second link defines a second link female receiving area. The first link male member is located within the second link female area, and the first link and the second link are capable of some rotation in relation to each other to selectively adjust the shape of the hat bill.

Adjustable hat member

An adjustable hat bill having a first link and a second link. The first link has a first link male member, and it defines a first link female receiving area. The second link defines a second link female receiving area. The first link male member is located within the second link female area, and the second link is capable of some rotation about the male member.

A device (10) for explosively cutting a pipe (40) having an inner circumference has a carrier member (12) having a circumference. A support structure, such as a spring steel band (20), is releasably carried on the carrier member (12) in a retracted configuration by an explosive bolt (24) and is biased towards an extended configuration. The retracted configuration facilitates insertion of the device into the pipe (40). A linear charge of explosive material, e.g., shock wave refractive tape (26), is secured to the support structure. When the bolt (24) is fired, the spring band (20) is released from the carrier member (12) and moves to the extended configuration in which the linear charge engages the interior of the pipe (40) to facilitate cutting the pipe. Initiation manifolds (42) mounted on the support structure receive an initiation signal and detonate the linear charge at both sides thereof. In an alternative embodiment, the device (10) carries a plurality of segments of linear explosive charges (126) in a staggered arrangement about the device. Pneumatic cylinders (125) may be used to move the charges (126) from their retracted configurations to the extended configurations.

Device for cutting a large diameter pipe and initiation manifold therefor

A booster explosive device (10) has a housing (12) within which is contained an explosive primer charge (14). Mechanical fastener components such as exterior screw threads (32) on housing (12) and interior screw threads (34) on an explosive accessory charge (20) may be engaged with each other in order to provide a charge assembly (30) comprised of device (10) and accessory charge (20). The outer peripheral surface (26) of accessory charge (20) is optionally concave so that accessory charge (20) optionally serves as a shaped charge to provide enhanced radial explosive output. Explosive primer charge (14) is configured so that the output tip (44b) of a detonator (44) contained therewithin is positioned below at least about 50 percent by weight of primer charge (14) and within the accessory section (10c) of device (10).

Booster explosive devices and combinations thereof with explosive

A method and apparatus for transferring non-electric blasting initiation signals from detonating cord signal donor lines to signal transmission tube acceptor lines involves disposing the acceptor line in enhanced signal transfer configuration with the donor line. The acceptor line (30) may constitute the input lead (29a) of a detonator (10a). Enhanced signal transfer configuration between the input lead (29a) and the detonating cord (60) can be established by disposing input line (30) in at least partial wrap-around contact with the detonating cord (60) or in multiple abutting contact with the detonating cord (60). Enhanced signal transfer configuration can also be achieved for a detonator having at least two input lines in abutting contact with the detonating cord. A slider (44) is designed to extend contact between a detonator input lead and a detonating cord. The slider (44) provides a detonator retainer (48) for holding a detonator (10a) and a base fixture (74') that includes a pass-through aperture (58a) for a detonating cord (62). Input lead-retaining means (52) on the base fixture (74') disposes the input lead (29a) in position for enhanced signal transfer configuration with a detonating cord that may extend through the pass-through aperture (58a).

Method and apparatus for transfer of initiation signals

A slider (36) has a base fixture (40) and a shielding tube (42). The slider (36) is used to operably couple a detonator (44) to a detonating cord (62) that passes through a booster device (10), i.e., to prevent the detonating cord (62) from directly initiating or fracturing the booster (10). The base fixture (40) includes input lead-retaining means for disposing the input lead (47) of a detonator (44) in signal transfer relation to the detonating cord (62). Optionally, the slider (36) has a detonator retainer (38) for carrying the detonator (44) on the slider (36). Preferably, the detonator retainer (38) is able to hold detonators of various lengths in proper position to initiate the booster device (10). By disposing the shielding tube (42) on the slider (36) a booster device (10) can be used with various detonating cords (62) and a slider (36) having a shielding tube (42) suitable for the chosen detonating cord (62) can be inserted into the booster device (10).

Slider member for booster explosive charges

A well pipe perforating gun (10) is improved by the utilization of a pulverable support structure (14) to hold the explosive shaped charges (18a, 18b, etc.) and the fireset (20). When the gun (10) is fired, the support structure (14) disintegrates substantially into fragments too small to obstruct the flow of oil or natural gas from a surrounding earth formation into or through the well pipe (12) within which the gun is disposed. Optionally, the support structure (14) is assembled from a number of segments (14a, 14b, etc.) linked together in sequential fashion.

Growing community of inventors

Waterbury, CT, United States of America

Daniel A Toro