Abstract: Cleaning devices described herein can provide a hybrid fin and wiper system to facilitate removal of residual solids and liquids from a tubular device (e.g., endoscope), even in a single pass. The cleaning devices described herein can provide pressure equalization and release to effectively clean a blind channel without causing hydraulic compaction of debris. The cleaning devices described herein can provide a connection system that facilitates adjustment and customization based on the needs of a particular application.

Abstract: A pull through having a filament about which, at least in part, there is carried at least one mass to fulfil a cleaning role, wherein said mass defines a sheath at least in part on the filament and at least two radial fins (A) integral with and/or carried by the sheath or extension thereof, and (B) axially spaced with respect to the sheath axis and the filament axis, and wherein said fins are each substantially radially directed with respect to said axes axis yet are of a profile and are formed in a material such that each, without any substantial interference of the other, can assume a configuration for a conduit to be cleaned smaller than that notionally just touchable by the undeformed fins.

Abstract: A method and apparatus of production of tubes comprising, on an extruder, extruding molten plastics through die formations of a die head so as to extrude tubes each including at least one internal longitudinal web, and subsequently cooling the extruded tubes. In addition, when advancing molten plastics through a die hole (110) of the die head, the die head includes a die mandrel (122) having a first portion (124) attached to the die body and a second portion (126) extending in the die hole (110) so as to extrude the tube with at least one internal longitudinal web, the advancing including conveying molten plastics along a flow passageway (134) in the first portion (124) of the die mandrel (122) towards a central longitudinal region of the die hole at the second portion (126). The die body advantageously has a die mandrel locating device (118) arranged at the upstream side of the die body for locating the die mandrel (122) centrally of the die hole (110) of the die body.

Abstract: A pull through having a filament about which, at least in part, there is carried at least one mass to fulfil a cleaning role, wherein said mass defines a sheath at least in part on the filament and at least two radial fins (A) integral with and/or carried by the sheath or extension thereof, and (B) axially spaced with respect to the sheath axis and the filament axis, and wherein said fins are each substantially radially directed with respect to said axes axis yet are of a profile and are formed in a material such that each, without any substantial interference of the other, can assume a configuration for a conduit to be cleaned smaller than that notionally just touchable by the undeformed fins.

Abstract: An overcurrent protection circuit for low-voltage, high-current electrical systems comprises a Positive Temperature Coefficient (PTC) resistor in series with an auto-reset thermal breaker. The breaker allows for intermittent current within an assumed product usage duty cycle, and repeatedly trips and resets on sustained high current usage or during a short-circuit fault. The PTC resistor limits current in the system to a low value when the temperature rises to the PTC resistor's trip point. The PTC resistor protects the system from thermal damage during the non-breaker-tripped portions of sustained high current use, or during continuous low-current use. The use of both the PTC resistor and auto-reset breaker provides thermal overcurrent protection while allowing for performance claims based on an assumed duty cycle of product use.

Abstract: An overcurrent protection circuit for low-voltage, high-current electrical systems comprises a Positive Temperature Coefficient (PTC) resistor in series with an auto-reset thermal breaker. The breaker allows for intermittent current within an assumed product usage duty cycle, and repeatedly trips and resets on sustained high current usage or during a short-circuit fault. The PTC resistor limits current in the system to a low value when the temperature rises to the PTC resistor's trip point. The PTC resistor protects the system from thermal damage during the non-breaker-tripped portions of sustained high current use, or during continuous low-current use. The use of both the PTC resistor and auto-reset breaker provides thermal overcurrent protection while allowing for performance claims based on an assumed duty cycle of product use.

Abstract: A pull through such as might be used for an endoscope where a thermaplastics monofilament substantially free of spool or coil memory has molded thereon a desirable thermoplastic mass profile in a material of lower melting point than at least part of the filament, such melting point differential with preferably pre-heating of the filament ensuring an appropriate keying of the profile on the filament.

Abstract: A pull through such as might be used for an endoscope where a thermoplastics monofilament substantially free of spool or coil memory has moulded thereon a desirable thermoplastic mass profile in a material of lower melting point than at least part of the filament, such melting point differential with preferably pre-heating of the filament ensuring an appropriate keying of the profile on the filament.

Abstract: Cordless electric tools or the like comprising a power handle and a plurality of diverse tool heads detachably securable thereto. The power handle includes battery means therein and operator controlled switch means, whereas each of the diverse tool heads may include an electric motor and an output means. The tool heads and power handle include interengageable means constructed for quick mechanical and electrical interconnection therebetween facilitating quick connection and disconnection of the power handle from the various tool heads without requiring any special tools or implements. Electrical interconnection is made automatically upon mechanical interconnection. In addition, a battery charger for the battery means may include similar mechanical and electrical connection means operatively engageable with the power handle to afford ready and easy charging of the battery means between uses of the power handle.

Abstract: Cordless electric tools or the like comprising a power handle and a plurality of diverse tool heads detachably securable thereto. The power handle includes battery means therein and operator controlled switch means, whereas each of the diverse tool heads may include an electric motor and an output means. The tool heads and power handle include interengageable means constructed for quick mechanical and electrical interconnection therebetween facilitating quick connection and disconnection of the power handle from the various tool heads without requiring any special tools or implements. Electrical interconnection is made automatically upon mechanical interconnection. In addition, a battery charger for the battery means may include similar mechanical and electrical connection means operatively engageable with the power handle to afford ready and easy charging of the battery means between uses of the power handle.