A heavy duty staple remover 10 for disengaging embedded staples 30 having a concealed back surface 34 and an exposed back surface 32 comprises a handle 12 having a working end 40 and a manipulating end 42 pivotally connected to the handle 12 proximate to their respective working ends. A pair of generally parallel elongate spaced apart anvils 26 are integral with the working end 18 of the handle 12. The anvils 26 being spaced apart to engage substantially the lateral extremes of the concealed bac...

A plurality of mounts carry a weighbridge or platform. Each mount has a transducer that carries the mounts portion of the load and indicates weight by strain in shear. The weighbridge loads a horizontal cross pin. The pin, in turn, loads a link that loads a second, integrally connected link. The second link loads the middle of the transducer of the mount in shear. The transducer and cross pin lie orthogonally. The ground rigidly supports the ends of the transducer. The links coupling the transdu...

A wide beam floodlight fixture by which the light from a lamp bulb that radiates light in all directions away from its axis, directs that light in a wide well defined beam. The fixture comprises a housing with a transparent front wall, and opposite opaque top, bottom and side walls. A curved reflector in the rear of the fixture housing embraces the lamp bulb and directs its light out of the transparent front wall. The top and bottom walls of the fixture have aligned access ports through either o...

A socket shell for a lamp socket includes a substantially cylindrical socket sleeve formed to cooperate with a socket cap of substantially dome-shaped configuration and having a circumferential lip that seats up against an upper edge of said socket sleeve. Lugs are formed on the outer circumference of said socket sleeve proximate a first end thereof to pass through slots formed in the inner wall of said circumferential lip and to cooperate with said lip to obtain a releasable securing means. A t...

A staple removing device includes a pair of jaws having portions which are provided at an angle with respect to a corresponding pair of handles. The pair of jaws are pivotable about a common pivot pin. A palm rest extends from a bracket which is attached to a jaw and a corresponding handle. In operation, the palm rest is positioned generally in line with the jaws and a staple to be removed. Additionally, the palm rest is positioned so that an operator can comfortably apply a pushing force thereo...

Disclosed is a heavy-duty plate cutting shear to be carried on an elevated lifting device, comprising a frame with a mounting mechanism for attaching to such a device, a slidable foot affixed on the frame and having an unobstructed base face for engaging and sliding along the plate being sheared, the slidable foot having an elongate slot opening through the base face and also having metal shearing edges at both sides of the slot and adjoining the face, a swingably oscillatable blade having pivot...

In a heavy-duty circuit breaker comprising a turn-off-type semiconductor component and a control unit (AS), the interfering inductance in the control circuit is considerably reduced by dividing the control unit (AS) into similar sub units (AS1, . . . , ASn) which operate in parallel.

An op-amp flasher for trucks, busses, ambulances and other equipment requiring flashing high power light sources. The flashing is made more noticeable and lamp life increased by increasing the spacing between the flashes so that the flashes are on less than half of the time. In a preferred form, the flashes are on a third of the time and intervals between flashes are two-thirds of the time.

A heavy duty pneumatic tire comprises a tread, two side walls, two beads, a radial carcass reinforcement, and a belt composed of at least two plies of which cords are intersected in the adjacent plies. The radius of curvature of the contour of the tread appearing in a tire cross section including a tire rotary axis is asymmetrical with respect to the tire equatorial plane. A larger radius of curvature is given to the tread portion to be located outside when the tire is mounted to a wheel, while ...

A heavy duty, chassis-mounted rock trencher for use with a conventional tractor for digging a trench, which obviates the use of outboard counterweights typically used to prevent overcentering problems. The trencher comprises an elongated digger boom selectively pivotally deployable between an inclined digging position and a roughly horizontal transport position. Additionally, the boom may be selectively contracted or extended to transfer weight overcenter and enhance stability. The boom comprise...