Inventor

E. Dale Hartley

Inventor

Malibu, CA, US

Overview

27→

Patents

1976–1997

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 27 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

F04Bprimary

F04BPositive-displacement machines for liquids22%

Y10TTechnical subjects covered by former us classification19%

F01BMachines or engines, in general or of positive-displacement type, e.g. steam engines7%

F01LCyclically operating valves for machines or engines7%

B67DDispensing, delivering or transferring liquids, not otherwise provided for5%

G01FMeasuring volume, volume flow, mass flow or liquid level5%

G05DSystems for controlling or regulating non-electric variables5%

F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids3%

F05CIndexing scheme relating to materials, material properties or material characteristics for machines, engines or pumps other than non-positive-displacement machines or engines3%

F16KValves3%

PatentTitleYear

5,667,105'Portion control valve and system and method utilizing the same'1997 5,505,593'Reciprocable device with switching mechanism'1996 5,500,113'Reverse osmosis water system'1996 5,470,209'Offset reciprocable device'1995 5,379,795'Venting apparatus'1995 5,242,281'Wobble plate pump'1993 5,125,809'Wobble plate pump'1992 4,827,832'Valve system for a reciprocating device'1989 4,827,831'Reciprocating device and switching mechanism therefor'1989 4,797,069'Pump with variable angle wobble plate'1989 4,684,332'Ratio pump and method'1987 4,645,426'Bilge pump'1987 4,610,605'Triple discharge pump'1986 4,610,192'Reciprocable device'1986 4,493,435'Liquid dispensing system and automatic selector therefor'1985 4,396,357'Diaphragm pump with ball bearing drive'1983 4,305,702'Pump with expandable chamber'1981 4,300,592'Pressure regulator'1981 4,290,040'Electromagnetic actuator having preloaded spring means'1981 4,242,061'Double diaphragm pump'1980 4,230,026'Reciprocating piston device'1980 4,214,137'Pressure switch with snap element'1980 4,182,368'Pressure regulator'1980 4,153,391'Triple discharge pump'1979 4,081,621'Pressure switch with diaphragm and valve means'1978 3,994,314'Servo regulator'1976 3,979,023'Dispenser for flowable material'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1981Based in Los Angeles, CA, US· patent location history

1978–1979Patents assigned to CARR GRIFF INC (2)· patent assignee history

1980–1992Patents assigned to PROD RES & DEV (10)· patent assignee history

1980–1993Patents assigned to HARTLEY E DALE (8)· patent assignee history

1981–1997Based in Malibu, CA, US· patent location history

1987–1993Patents assigned to HARTLEY F SCOTT (2)· patent assignee history

1995–1997Patents assigned to SHURFLO PUMP MANUFACTURING CO (5)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
PROD RES & DEV	10	1980–1992
HARTLEY E DALEself	8	1980–1993
SHURFLO PUMP MANUFACTURING CO	5	1995–1997
CARR GRIFF INC	2	1978–1979
HARTLEY F SCOTT	2	1987–1993

Locations

Location	Patents	Span
Malibu, California, US	18	1981–1997
Los Angeles, California, US	9	1976–1981