DANIEL E KRAMER
Engineers in Yardley, PA

4277953, Jul 14, 1981

Apr 30, 1979

6/034777

Daniel E. Kramer - Yardley PA

F25B 500

62117

A distributor for volatile refrigerant having a single inlet and many outlets and designed to distribute refrigerant substantially uniformly to each outlet, has its outlets manifolded together in groups to provide equal refrigerant distribution to a few relatively large loads or unequal distribution to a few relatively large loads according to a predetermined ratio, the ratio of the refrigerant distribution to the various loads being predetermined by the ratios of the numbers of outlets that are selected to serve those loads.

3994142, Nov 30, 1976

Jan 12, 1976

5/648385

Daniel E. Kramer - Yardley PA

F25B 500, F25B 4100, F25B 2702

62117

A refrigeration system which has two condensers located in different environments and intended for use alternately, a valve arrangement for determining which of the two condensers is to be operative for rejecting heat and which is to be inoperative, which includes control valves in the outlet conduit of each of the condensers arranged so that when one is open, the other is closed, and vice versa.

5746061, May 5, 1998

Aug 19, 1997

8/915336

Daniel E. Kramer - Yardley PA

F25B 4900

62127

A method for determining airflow through an air cooling and dehumidifying coil by measuring the condensate rate and the moist air conditions entering and leaving the coil. The mass air flow, the volume air flow and the cooling capacity are then calculated from data exhibited on a psychrometric chart or by calculating the same result from basic principles.

4658602, Apr 21, 1987

Dec 23, 1985

6/812891

Wayne F. Giberson - Yardville NJ
Glenn T. Estep - Trenton NJ
Daniel E. Kramer - Yardley PA

Kramer Trenton Co. - Trenton NJ

F25B 3902

62515

The means and method of pitching a refrigeration evaporator toward its drain outlet which includes a top plate of variable thickness. The evaporator is secured to the top plate. When the top plate is secured against the horizontal ceiling, the evaporator is caused to pitch, so that condensate leaving the coil and entering the drain pan flows directly to the drain fitting which is positioned under the portion of the top plate having the greatest thickness.

3992895, Nov 23, 1976

Jul 7, 1975

5/593841

Daniel E. Kramer - Yardley PA

F25D 2102

62155

A defrost control system for the defrosting evaporators of a refrigeration system which utilizes a first timer which runs continuously and attempts to initiate evaporator defrost at predetermined times and a second timer which accumulates compressor operating time and prevents defrost initiation by the first timer at those preselected times until a predetermined period of operation of the refrigerating system has occurred.

4289362, Sep 15, 1981

Jun 12, 1979

6/047875

Daniel E. Kramer - Yardley PA

B65D 814, E05D 1526, A47B 4300

312138R

Segmented doors for closing a wide opening in an enclosure where the upper door is hinged to the top of the opening, the lower door is hinged to the bottom of the upper door and a wire bail is provided for the purpose of locking the lower door into a V-like or triangular relationship with the upper door. This V-like structure, composed of the locked-together upper and lower doors, can then be rotated upward to a stable triangular or inverted V-like position atop the roof or top panel of the cabinet.

4137057, Jan 30, 1979

Feb 4, 1977

5/765805

Zenon Piet - Princeton NJ
Daniel Kramer - Yardley PA

Kramer Trenton Co. - Trenton NJ

F25D 1706

62 89

A refrigeration system for cooling air having an evaporator; a compressor; a control for establishing ON periods and OFF periods of the compressor; at least two motor-driven fans positioned to force air over the evaporator; and a control system for the evaporator fans to cause fewer of the fans to run during compressor OFF periods and more of the fans to run during compressor ON periods.

4530215, Jul 23, 1985

Aug 16, 1983

6/523616

Daniel E. Kramer - Yardley PA

F25B 4302

62 84

A compressor having an oil sump, an external oil reservoir, a conduit connecting the bottom of the oil reservoir to the compressor sump, a pump in the conduit for pumping excess oil from the reservoir to the compressor sump, and an overspill from the compressor sump back to the oil reservoir and a high side or a low side oil separator for removing oil from the refrigerant flow stream and returning it to the reservoir.

4095438, Jun 20, 1978

Mar 4, 1977

5/774480

Daniel E. Kramer - Yardley PA

F25B 4700

62278

A refrigeration system having compressor and condenser adapted for operation in ambients above approximately 45. degree. F (7. degree. C) and including a frosting evaporator. The evaporator is defrosted by hot gas which flows through the compressor discharge, the condenser, the receiver, the liquid line and a valve-controlled hot gas branch connected between the liquid line and the hot gas inlet of the evaporator. During defrost, a control stops the evaporator and condenser fan motor and opens the valve in the hot gas branch conduit. At defrost's end, the control causes the evaporator and condenser fan motor to operate and the hot gas valve to close so that liquid refrigerant flows from the condenser outlet through the receiver and liquid line to the expansion device which feeds the evaporator for refrigeration in the normal course.

3959979, Jun 1, 1976

Dec 9, 1974

5/531228

Daniel E. Kramer - Yardley PA

F25D 1706

62 89

This patent describes forced air heat exchangers using single phase A. C. motors to drive their fans and a method of securing high and low speed operation of the motors by connecting them alternately in delta and wye across a 3-phase power supply.