Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 4946412 | Swimming aid A swimming aid comprises a floating body and a bottom viewer and may be used at a swimming pool or in the sea. The floating body is U-shaped in cross section and has a hood at the top thereof. The floating portion buoyantly supports the upper half of the ... | 08/07/1990 |
| 4899809 | Automotive air conditioner system with automatic adjustment of discharge air temperature A system for controlling temperature of air to be discharged into a cabin of a vehicle in an automatically controlled air conditioner system of an automotive vehicle. The air conditioner system is provided with a cooling unit and a heating unit for coolin... | 02/13/1990 |
| 4895390 | Steering mounting arrangement for automotive vehicle featuring improved head on collision characteristics In order to move a steering wheel about a large radius to a safe position during a head on collision or the like, the steering column is supported on a first stay which is resistant to bending and which is connected to the dashpanel which separates the en... | 01/23/1990 |
| 4890589 | Variable capacity type reciprocating piston device The crankshaft of an engine or compressor is arranged to define an Oldham type sliding connection which permits the stroke of a piston or pistons to be selectively varied. When the axis of the control disc is displaced along a arcuate path the TDC positio... | 01/02/1990 |
| 4819715 | Automatic air conditioning system for an automotive vehicle An automatic air conditioning system for an automotive vehicle can operate in vent mode, bi-level mode or heater mode, the automatic selection of which is adjusted on the basis of air conditioning-influencing external conditions. The heat value required t... | 04/11/1989 |
| 4730662 | Automotive automatic air conditioning system with variable temperature DEMIST mode An automotive air conditioning system has a DEMIST mode which is operative at least in VENT or BI-LEVEL modes for switching conditioned air flow from an upper vent air outlet to a defroster nozzle. In the DEMIST mode, the temperature of air discharged thr... | 03/15/1988 |
| 4712446 | Anti-vibration structure of a steering arrangement A dynamic damper comprising at least one elastic member and mass member is mounted within a conventional shaft housing eccentrically with respect to an axis center of a steering shaft. The elastic member of the dynamic damper gives a spring constant which... | 12/15/1987 |
| 4681153 | Automotive air conditioning system with independent temperature control for dual air flows An automotive air conditioning system which delivers air from upper and lower air outlets at independently controlled temperatures has a pressure responsive door interposed between an upper air mix chamber and a space near the outlet of a heater core or a... | 07/21/1987 |
| 4662109 | Sliding door lock arrangement A vehicle body has a door opening. A door has a front edge and a rear edge. The door is slidable relative to the vehicle body and is able to close and unblock the door opening. A device serves to releasably lock the door rear edge to the vehicle body when... | 05/05/1987 |