1
Earl L Morris: Vandal-proof plumbing valve access box. Acorn Engineering Co, Ben E Lofstedt, September 11, 1979: US04167196 (70 worldwide citation)

A rectangular vandal-proof plumbing valve access box for housing at least one plumbing valve therein and for containing same within the wall of a building, including an access cover facing the user-occupied side of the wall with security bolts anchoring the cover to the access box and having a lip e ...


2
Earl L Morris, Walter V Hafner, Theodore J Sally: Overflow inhibitor for plumbing fixtures. Acorn Engineering Co, Ben E Lofstedt, May 20, 1980: US04203173 (23 worldwide citation)

A plumbing fixture in combination with means for preventing overflow from a toilet bowl having a P-trap when an obstruction is created in the waste outlet thereof, such plumbing fixture including a blow-out jet pipe, the entrance of the pipe being coupled in fluid communication with the water supply ...


3
Earl L Morris, Walter V Hafner, Theodore J Sally: Plumbing fixture overflow limiter. Acorn Engineering Co, Ben E Lofstedt, April 1, 1980: US04195374 (19 worldwide citation)

A plumbing fixture with a toilet bowl having a P-trap with means for inhibiting overflow from the toilet bowl when an obstruction exists in the waste outlet thereof, comprising: a tolet bowl having a flushing rim thereabout adapted to be coupled to a water supply pipe; an electrically controlled flu ...


4
Earl L Morris, Larry D Fields: Dashpot mechanism for self-closing plumbing valves. Acorn Engineering Co, Ben E Lofstedt, August 28, 1979: US04165857 (7 worldwide citation)

An improved liquid-filled dashpot mechanism for use with a spring-biased, axially-displaceable valve stem, comprising: a housing having a passageway therein, a stem in the passageway adapted for reciprocation therein, a pair of annular rolling diaphragms disposed in spaced-apart, face-to-face relati ...


5
Earl L Morris: Waste drain coupling for plumbing fixtures. Acorn Engineering Co, Ben E Lofstedt, January 22, 1980: US04184702 (7 worldwide citation)

An improved apparatus for securing, in fluid sealing relationship, the waste outlet of a plumbing fixture to a waste receiving pipe extending through and beyond a mounting structure, such as a wall or a floor, the waste receiving pipe having a radially-extending flange about one end thereof with a p ...


6
Earl L Morris: Waste drain connection for plumbing fixtures. Acorn Engineering Co, Ben E Lofstedt, August 22, 1978: US04108477 (5 worldwide citation)

A waste drain connection for independently-supported plumbing fixtures including a pipe with two open ends and a pair or radially-extending arms having open portions therethrough secured to the outside of the pipe intermediate the open ends thereof. A receptacle mounted to the plumbing fixture drain ...


7
Thomas K Zinn: Vacuum waste removal system. Acorn Engineering Co, Michael Best & Friedrich, May 20, 2008: US07374669 (4 worldwide citation)

A vacuum transport system suited to moving FOG-laden water. The system includes a first reservoir and at least one vacuum pump in fluid communication with the first reservoir and operable to produce a vacuum within the first reservoir. A first accumulator is positioned to collect FOG-laden water fro ...


8
Earl L Morris, Theodore J Sally: Wall sleeve and plumbing installation jig. Acorn Engineering Co, Ben E Lofstedt, March 9, 1976: US03942201 (4 worldwide citation)

A plumbing installation jig and wall sleeve is provided for the secure and rapid installation of plumbing fixtures through concrete, gunite, masonry walls and the like. The device includes a single rectangular sleeve, with precisely located individual tubes for the anchor bolts which accurately posi ...


9
Robert L Wheeler: Toilet seat cover assembly. Acorn Engineering Co, Edgar W Averill Jr, December 12, 2000: US06158060 (3 worldwide citation)

A toilet seat cover assembly for use as a combination toilet seat cover and auxiliary bathroom seat with self-positioning, retractable backrest. The assembly includes a cover which is hinged to either the toilet or a housing structure positioned on either side of the toilet. A backrest having a base ...


10
V Walter Hafner, Ron Hahn, Enrique P Loreto: Activator valve for providing a timed vacuum at an output port. Acorn Engineering Co, Edgar W Averill Jr, November 6, 2001: US06311718 (3 worldwide citation)

An activator valve for providing a time temporary vacuum at an output port which is normally at atmospheric pressure. The timed vacuum is provided in response to an increase in air pressure in an interruptible vacuum chamber, such as that by briefly opening the valve between the outside of the valve ...



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