摘要:
A mechanism for dynamically resolving polymorphic type dependencies between parallel heterogenous run-time environments is provided. The mechanism comprises a registry of class types for software objects, in which each class type is linked to a hierarchy of bindings rooted at the binding for that class type with descendent bindings in the hierarchy relating to more specific sub-classes. At run-time a pointer to an object is received, and the received static type of that pointer can be looked up in the registry to determine the location in the hierarchy of bindings at which to make an initial query for the most specific sub-class compatible with the dynamic type of the object. Subsequently, beginning at the determined location in the hierarchy of bindings, the most specific sub-class compatible with the dynamic type of the object is determined, and a run-time binding based on the most specific sub-class identified can be selected.
摘要:
The invention provides compositions and methods useful for identifying, verifying or authenticating any type of sample, whether the sample, is biological or non-biological.
摘要:
The present invention provides a blower-vacuum device having means for collecting garden waste, the garden waste collecting means comprising: an attachment part (42) for receiving a garden waste receptacle; and a garden waste receptacle (30) for removable engagement with the attachment part; wherein the attachment part (42) comprises an arcuate groove (44); and the garden waste receptacle (30) comprises a band (33) defining a mouth (35) of the receptacle for sliding engagement with the groove. Thus the receptacle may be easily removed from the attachment part of the blower-vacuum device merely by sliding the band (33) of the receptacle out of the groove (44), whereupon the receptacle may then be emptied of garden waste by tipping it upside-down. In a preferred embodiment, the band (33) is made of a resilient material, whereby when the band is inserted into the groove (44), the band is constrained by the groove and the mouth (35) of the receptacle defined by the band is made narrower than when the band is withdrawn from the groove. Thus when the band is withdrawn from the groove (44), the mouth (35) of the receptacle opens out (arrows R and S), making it easier to empty.
摘要:
The present invention provides an interlock mechanism suitable for use with a blower-vacuum device, which comprises: a user-operable switch (30) having a first condition for activating a motor of said blower-vacuum device and a second condition for deactivating said motor; a latch (58) for engagement with a removable attachment of said blower-vacuum device; and a user-operable release button (57) for disengaging said attachment from said latch (58); wherein said switch (30) is operable to activate said motor only when an attachment is engaged with said latch (58), and said release button (57) is operable to disengage an attachment from said latch (58) only when said motor is deactivated; and wherein the first condition of said switch (30) comprises a first position of said switch for activating said motor at a first speed of operation and a second position of said switch for activating said motor at a second speed of operation. Thus the fan of the blowervac can be driven by the motor at two different speeds of operation suitable for different usage conditions, even though the fan cannot be driven by the motor when the fan is exposed.
摘要:
The present invention provides a blower-vacuum device having means for collecting garden waste, the garden waste collecting means comprising: an attachment part (42) for receiving a garden waste receptacle; and a garden waste receptacle (30) for removable engagement with the attachment part; wherein the attachment part (42) comprises an arcuate groove (44); and the garden waste receptacle (30) comprises a band (33) defining a mouth (35) of the receptacle for sliding engagement with the groove. Thus the receptacle may be easily removed from the attachment part of the blower-vacuum device merely by sliding the band (33) of the receptacle out of the groove (44), whereupon the receptacle may then be emptied of garden waste by tipping it upside-down. In a preferred embodiment, the band (33) is made of a resilient material, whereby when the band is inserted into the groove (44), the band is constrained by the groove and the mouth (35) of the receptacle defined by the band is made narrower than when the band is withdrawn from the groove. Thus when the band is withdrawn from the groove (44), the mouth (35) of the receptacle opens out (arrows R and S), making it easier to empty.
摘要:
A blower vacuum comprising a motor (10) operated by a switch (16) and located in a housing (4), a fan (14) drivable by a motor, at least one attachment member (6,106) which covers the fan and which is releasably attachable to the housing, and a safety interlock located at the interface between the housing and the attachment member comprising an actuating means (53) for activating the switch only when the attachment member is attached to the housing and a locking means (54, 42) for locking the attachment member to the housing when the motor is switched on.