Measuring and testing – Tire – tread or roadway – Tire inflation testing installation
Patent
1981-09-21
1984-08-14
Goldberg, Gerald
Measuring and testing
Tire, tread or roadway
Tire inflation testing installation
116 34R, 137228, 137270, B60C 2302
Patent
active
044649290
ABSTRACT:
A tire cap pressure gauge for mounting upon a tire valve stem and measuring tire pressure has a housing, a manually operated plunger extending axially through the housing, a spring extending about the plunger, a piston biased by the spring and having indicia, and a transparent insert member containing said spring, piston and plunger within the housing and having an internally threaded bore for mounting about the periphery of a threaded valve stem. The housing has multiple windows with indicia proximate thereto for viewing the translational position of the piston through the transparent insert member. Two embodiments show a lightweight, compact and easily assembled pressure measuring cap having sealless construction which utilizes close clearances and sharp corners to minimize leakage airflow. A small but insignificant amount of air leaks past the piston, providing an audible signal that the plunger is sufficiently depressed to provide an adequate pressure reading. One embodiment is adaptable to two ranges of use, automobile tire pressures and truck tire pressures, by merely changing the orientation of the plunger thereby changing the effective pressure biasing area of the piston.
REFERENCES:
patent: 1156268 (1915-10-01), Bromberg
patent: 1807752 (1931-06-01), Poster
patent: 2343582 (1944-03-01), Rist
patent: 2903888 (1959-09-01), Gfoll
patent: 3230968 (1966-01-01), Struby
patent: 3572283 (1971-03-01), Ashman
patent: 3670688 (1972-06-01), Seaberg
patent: 3720224 (1973-03-01), Foxhall
patent: 3811459 (1974-05-01), Schmidt
patent: 3824849 (1974-07-01), Foxhall
patent: 3866563 (1975-02-01), Bluem
patent: 3889530 (1975-06-01), Bluem
patent: 4072048 (1978-02-01), Arvan
patent: 4079691 (1978-03-01), Curado
patent: 4136560 (1979-01-01), Gellos
patent: 4193295 (1980-03-01), Curran
patent: 4236412 (1980-12-01), Myrick
Chapman, Jr. John E.
Goldberg Gerald
Schwarz Jerry W.
Willis, Jr. William M.
Willis, Sr. William M.
LandOfFree
Tire cap pressure gauge does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tire cap pressure gauge, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tire cap pressure gauge will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-107806