Abstract: A mechanical brake for arresting movement of the output shaft of a linear electric motor, comprising a pivotally mounted plate having a space for receiving the output shaft of the motor; an electrically operated holding device contacting a free end of the plate and arranged to hold the plate in a condition to permit movement of the output shaft and to permit the plate to pivot to a jamming position; wherein the electrically operated holding device comprises a solenoid to control the movement of the plate.

Abstract: A delivery device for semi-solid implantable material such as synthetic bone graft substitutes. The device includes a handle, a cylinder extending from the handle and having an outlet at its distal end. A piston is operated by a trigger and is slidable within the cylinder to displace the material from the cylinder. The cylinder has a substantially constant inner diameter along its entire length such that the outlet has substantially the same inner diameter as the rest of the cylinder. When the trigger is fully depressed, a ratchet mechanism is disengaged allowing the piston to be pulled back to a starting position.

Abstract: An improved drive dog for an imaging machine has a central opening. At least one internal ramp radiates from the central opening of the drive dog whereby a tooth of the imaging machine drive mechanism is centered and directed into the drive dog seat. The leading edge of the drive dog seat contacts the base of the imaging machine drive mechanism thus making full contact between the drive dog seat and the imaging machine drive mechanism tooth.

Abstract: A dispensing gun for viscous material including a stock supporting a push rod which is advanceable along a keep in which a cartridge of a material can be mounted. The rod is advanced by means of a catch plate and a locking plate prevents the rod retreating with the catch plate. The locking plate is carried by the rod between a first and a second position so that it acts as a lost motion brake once force is removed from the trigger in one configuration of the dispensing gun, taking the dispensing force off the cartridge to prevent leaking when the trigger is not depressed. In an alternative configuration, the lost motion is reduced, for example to zero, to allow a continuous dispensing action by maintaining the pressure in the cartridge using a pumping action of the trigger.

Abstract: A device for driving an output mechanism has a rotationally drivable input shaft, a structure located between the input shaft and the outlet mechanism for transmitting a drive torque to the input shaft to the output mechanism, wherein a non-positive functional connection can be created between a first element and the output mechanism, enabling an alternating movement of the first element to be converted into a movement of the output mechanism.

Abstract: A caulking gun includes a gun body, a push rod, a push plate, an adjusting knob, and a piston lever. Thus, the adjusting knob is rotated to move away from the push plate to increase the incline angle of the push plate, so that the push plate is locked on the push rod in a tilt manner to lock and move the push rod without having to replace the push plate, thereby enhancing the lifetime of the caulking gun.

Abstract: A caulking gun includes a gun body, a push rod, a push plate, an adjusting seat, a driving member, and an elastic member. Thus, the adjusting seat is movable in the gun body by rotation of the driving member to adjust the incline angle of the push plate by guidance of the tapered urging face of the adjusting seat so as to increase the incline angle of the locking hole of the push plate, so that the locking hole is locked on the push rod in a tilt manner so as to lock and move the push rod, without having to replace the push plate, thereby enhancing the lifetime of the caulking gun.

Abstract: An effective trigger grip power device is disclosed for countering piston rod lock due to wear and tear in conventional manual caulking guns. The device is shown in the context of an open frame (which may be a single piece of molded plastic) having a downwardly extending handle. A piston rod is slidably supported in the frame for dispensing caulking composition, and a trigger is pivoted to the frame and retractable against the handle. The effective trigger grip power device is positioned behind the gripping member and generally has a pushing member at one end for bearing against the gripping member to urge it into a vertical position, and a base section that is slidably channeled through the frame and extending rearwardly to said release lever for actuation thereby. In operation, depression of the release lever drives the effective trigger grip power device to urge the gripping member into a substantially vertical position to eliminate trigger lock.

Abstract: A paste injector gun, especially adapted for injecting bone cement, has first and second mechanical advantages. In a first embodiment, the first and second mechanical advantages are produced by two fulcrums engageable during different portions of the trigger stroke. In a second embodiment, the first and second mechanical advantages are produced by a fixed fulcrum and a rotatable fulcrum. The first mechanical advantage is greater than the second such that the first facilitates pressurizing the bone cement and the second facilitates high volume dispensing of the bone cement. The injector gun also includes a pair of U-shaped slots. One of the slots is sized to accept a large cement cartridge and the other slot is sized to accept a small cement cartridge. An alternative embodiment provides a hinged cartridge retaining gate for closing the U-shaped slots for positive retention of the cartridge.

Abstract: A caulk gun is provided with a forward-biasing mechanism to maintain contact between the caulk tube and the piston rod. The forward biasing mechanism is of simple construction and is piggy-backed to the trigger housing of the caulk gun. The operation of the forward-biasing mechanism relies on a friction grip which surrounds the piston rod. This friction grip is urged in the forward direction by a spring contained within the housing of the forward-biasing mechanism, and thereby biases the piston rod in the forward direction, while relieving the back pressure inside the caulk tube.

Abstract: A paste injector gun, especially adapted for injecting bone cement, has first and second mechanical advantages corresponding to different portions of the trigger stroke. The first mechanical advantage is greater than the second such that the first facilitates pressurizing the bone cement and the second facilitates high volume dispensing of the bone cement. The injector gun also includes a pair of U-shaped slots. One of the slots is sized to accept a large cement cartridge and the other slot is sized to accept a small cement cartridge.

Abstract: A liquid dispensing device which includes a housing and a spring actuated lever arm hingedly connected to the housing and having a latch operatively connected to a toothed bar wherein upon depression of the lever arm the toothed bar is axially displaced toward the front end of the housing and during return of the lever arm to its original position, the toothed bar is released, wherein the lever arm, the spring and the latch are integral, and the spring and latch are the same element.

Abstract: A metering device for dispensing a flowable substance from a container 10, in which a piston 11 with a piston rod 12 having a toothed portion 16 is disposed, includes a socket 17 adapted to be fixed to the container 10, an actuation lever 18 pivotal relative to the socket 17, a return spring 19 biassing the lever 18 to its rest position, an indexing detent 20 for advancing the piston rod 12 upon depression of the lever 18, and a retaining detent 21 for retaining the piston rod 12 in its respective position when the actuation lever 18 is released. The socket 17, actuation lever 18, reset spring 19, indexing detent 20 and retaining detent 21 are formed as one integral part injection-molded from synthetic resin. The socket 17 includes a slide 25 for fixing the part to a flange 14 provided at the rear end of the container 10.

Abstract: A ram gun for dispensing viscous fluid products such as adhesive, caulking materials and the like is disclosed. The gun can be rechargeable or can be employed as a single charge, disposable device. In a particular embodiment, the gun is formed in two parts by molding from plastic material. One part comprises the ram. The other comprises a container section for the material to be dispensed and is provided with integrally formed nozzle, handle and trigger. The trigger has an integrally formed pawl. The trigger is attached to the handle by a thin plastic strip acting as a living hinge and biasing the trigger away from the handle. The ram is slidably mounted in the container section and is incrementally advanced therein by operation of the pawl and rack which is actuated by squeezing of the handle and trigger.

Abstract: An apparatus for providing stepwise movement along an elongated stepped member. A holder contains at least one button that includes a pivotally mounted claw disposed to engage the stepped member when the button is depressed. The claw pivots upon engagement with the stepped member and further depression of the button moves the button and holder laterally a distance determined by the steps on the stepped member.

Abstract: A chainless feed system of a mining cutter-loader comprises a guiding rack mounted on a conveyer and meshing with gears rotatably mounted on the cutter-loader. The gears are operatively connected through a rotating mechanism with the hydraulic cylinders operable for rolling the gears along the guiding rack. The improvement of the rotating mechanism includes a carrier with a pawl adapted to engage the gear or come out of engagement therewith. For this purpose the pawl is pivotally mounted on the carrier which is operatively connected with the hydraulic cylinders arranged in opposition with respect to the pawl.

Abstract: A block of solid thermoplastic material comprising alternating sections of circular and rectangular cross section, a device for melting and dispensing thermoplastic material having a thumb operated drive assembly for driving the block into the device, and a molding mechanism including two chain like structures that move along linear path portions with molds included in the structures in face to face relationship while molten thermoplastic is injected in an inlet end of the linear path portion to continuously mold the block.

Abstract: A manually operable device is provided for dispensing measured amounts of a mastic-like or paste-like multi-component material. The components are supplied in separate containers and each container has an axially displaceable ejection piston. The pistons are displaced by piston rods and each piston rod can be gripped by a clamping jaw and the jaw is displaced via a manually operated lever and a stirrup. A support bearing member affords lateral support for the piston rods and the clamping jaws are pivotally mounted on the bearing member. The drive for the piston rods acts through the clamping jaw and the support bearing member so that each rod is displaced axially and does not need to be connected to the other. Due to a symmetrical arrangement of the forces acting on the support bearing member, the forces cancel one another out.