Peter K Olmsted, 80Traverse City, MI

7013234, Mar 14, 2006

Jul 29, 2003

10/629411

Peter K. Olmsted - Santa Fe NM, US

G06F 15/00

702150, 701207, 3561414

A method and apparatus which enables an individual user to determine corners and other points of interest in a construction site layout. Basic trigonometric calculations are made based on a dimensioned drawing which enables corners or other points of interest to be located by measurement to a plurality of known locations which preferably lie away from the working are of the construction site. The worker or workers then take these measurements to the site and measures the calculated distances from the know locations to determine the location of the points of interest.

7174947, Feb 13, 2007

Jul 26, 2002

10/485719

Peter Olmsted - Ann Arbor MI, US

Peter B. Olmsted Trust - Ann Arbor MI

B22D 17/10

164312, 164113, 164457

A method for sizing an overflow chamber () in a mold () for the die casting of metals is disclosed. The method includes the steps of simulating a pressure of molten metal () in a main cavity () of the mold () and calculating the volume of the overflow chamber () from parameters yielded by the pressure simulation. A mold () defining overflow chambers () is also disclosed.

3949779, Apr 13, 1976

Dec 30, 1974

5/537175

Peter B. Olmsted - Traverse City MI

Olmsted Products Co. - Traverse City MI

F16K 1722

137493

An improved exerciseable emergency flow shut off device for fluid control systems particularly adapted for use in adverse marine environments. In normal operation the valve spool is continuously exercised by a reversing fluid pressure differential as fluid reversibly flow through the valve. The improved valve includes low breakaway force spool biasing means to reduce the internal fluid resistance of the valve in normal operation and high breakaway force restraining means connected to the shut off means. In the preferred embodiment the spool biasing means and restraining means comprise separate coil springs concentrically located on the spool, the biasing means having a spring rate substantially lower than the restraining means. The biasing coil is reciprocateably compressed in response to the reversing fluid pressure differentials thus minimizing flow resistance. The restraining means is compressed in response to a sudden excess pressure differential thereby permitting shut off of the valve.

4026193, May 31, 1977

Sep 19, 1974

5/570425

Peter B. Olmsted - Traverse City MI

Raymond International Inc. - Houston TX

F01L 2506
F01B 718
F01B 1500

91216B

A hydraulic pile driving hammer system is described which requires only a single pressure operated pilot to obtain switching for reversal of hydraulic forces at both ends of its stroke.

3968813, Jul 13, 1976

Oct 9, 1974

5/513216

Peter B. Olmsted - Traverse City MI

Olmsted Products Company - Traverse City MI

F16K 1722
F16K 3700

137493

A novel emergency flow shut off device for fluid control systems particularly adapted for use in adverse marine environments. In normal operation the valve spool is continuously exercised by a reversing fluid pressure differential as fluid reversibly flows through the valve. External means are provided to conveniently monitor movement of the spool and thereby assure that the spool is free to shut off flow in a sudden emergency. Fluid cushioning means are provided at the end of the spool emergency shut off stroke to prevent damage to the valve. In a typical application the vertical motion of an offshore drill ship on the ocean swells causes oscillating flow in the fluid control system thereby automatically exercising the valve.

4724672, Feb 16, 1988

Jun 23, 1986

6/877490

Peter B. Olmsted - Traverse City MI

F16D 3102

60371

A motor driven hydraulic lift pump assembly for oil wells includes a mechanical flywheel connected to a hydraulic pump/motor combination in turn incorporated in the hydraulic circuit of the well lift cylinder. The pump/motor and flywheel assembly with associated hydraulic control can be separately mounted on a skid and connected into the hydraulic and electrical circuitry for the well lift cylinder. The combination pump/motor reverses in mode as the vertically mounted well cylinder piston moves upwardly and downwardly to pump from a deep well. As the well cylinder piston moves downwardly the pump/motor is in motor mode storing energy by increasing the rotational speed of the flywheel. As the well cylinder piston moves upwardly the pump/motor is in the pump mode and energy is taken from the flywheel to assist in raising the well cylinder piston to pump crude oil from the deep well. Thus, a portion of the energy released as the well cylinder piston moves downwardly on the return stroke is saved in the flywheel and recycled to assist in raising the well cylinder on the pumping stroke.