RICHARD A BROOKFIELD
Engineering in Newton, MA

4002960, Jan 11, 1977

May 1, 1974

5/465748

Richard A. Brookfield - Newton MA
Karl R. Ritzinger - Manchester NH

Brookfield Engineering Laboratories, Inc. - Stoughton MA

B23Q 528

318257

A threading and/or tapping device has a housing including a tubular portion and a chamber portion that provides a shelf for a motor. A shaft rotatably connected to a slide within the tubular portion extends downwardly through the chamber portion with a tool holder on its exposed end. The slide is movable by the operator to advance and retract the shaft and a gear train within the chamber includes a drive gear on the motor shaft and a driven gear through the axis of which the tool holder shaft extends to rotate therewith and to slide relative thereto as the operator advances or retracts the shaft. The housing includes means for detachably attaching it with the work holder shaft either normal to or axially aligned with a support. Means are provided to maintain, by a tachometer feedback control, a selected motor speed and a trip is provided to interrupt the operation of the motor if a predetermined maximum torque is exceeded, the torque being visually presented to enable the operator to so control the advance of the tool that overcutting at its leading or trailing edges may be substantially eliminated by maintaining the torque within an optimum range.

3968876, Jul 13, 1976

Mar 19, 1975

5/559830

Richard A. Brookfield - Newton MA

B65D 1704, B65D 8500

206365

A sterilized hypodermic needle is within a container having a necked receiver section and a cap section rotatably receiving the neck and providing a hermetic seal when the container is closed with the proximate ends of its sections abutting or nearly abutting and the sections have flat surfaces that are then substantially coplanar. A seal extends across the junction between the sections and is heat-sealed to flat surfaces and is of a material that will stretch, become deformed and ruptures as the container is opened. The seal is formed by first arranging a series of containers in a side-by-side, abutting relationship. A strip of the seal-forming material is disposed across the series to overlie the junction between the sections of the several containers and is secured to the exposed flat surfaces by heat seals extending lengthwise of the strip on opposite sides of the junctions and, finally, the tape is severed transversely to free each container.

3979834, Sep 14, 1976

Jan 22, 1975

5/543158

Richard A. Brookfield - Newton MA

G01B 508

33147M

A device for use in measuring the pitch diameter of gears has first and second pin-holding units movable along a straight, inclined pathway with means to lock one unit thereto against movement in a predetermined position relative to a gauge. Each pin extends upwardly from its unit and is backed by a V-shaped projection. A support is adjustable to position a gear in a plane transversely of the exposed ends of the pins with one pin seated between a pair of gear teeth and with a diametrically opposed pair of gear teeth positioned to have the other pin seated between them when the other unit is moved in the appropriate direction. The pins are dimensioned to seat against the pitch line of the teeth against which they are seated with the distance between the pins reflected by the gauge to give the relation of the actual pitch diameter to the ideal.