US3824849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inflation device
Assignee: JOCO Inc
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Filing: 1972-06-05
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Granted: 1974-07-23
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Expires: 1992-06-05
Abstract
Abstract A tire pressure indicator and inflation device which includes an outer housing having a bore and counterbore formed therein, and an internal housing or sleeve assembly positioned in the bore of the outer housing. The internal housing or sleeve assembly has a threaded hollow interior for connecting the internal housing assembly to the valve stem of a pneumatic tire. The internal housing assembly has an end plate which extends across and closes one end thereof and which carries a valve core depressor element. An elongated pressure indicator element carrying a piston at one end thereof is slidably mounted within the counterbore of the outer housing so that the piston seals against the internal wall of the outer housing in the counterbore. The piston and associated pressure indicator element are biased by a spring positioned between the piston and an internal shoulder on the outer housing to a position adjacent the internal housing.
Inventors
- 👤 O Foxhall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:20
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/02; B60C23/04; B60C23/0491; B60C23/0496
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
261 words
A pressure indicator and inflation device comprising: an outer housing having bore means extending therethrough to openings at opposite ends of the outer housing, and having air passageway means in the internal wall thereof which defines said bore means; a resilient inner housing positioned slidably within said outer housing adjacent one end thereof in said bore means, said resilient inner housing being adapted for securement to the valve stem of a pneumatic tire, said inner housing comprising: a cylindrical side wall; and an end portion integrally formed with said cylindrical side wall and keyed to said outer housing to prevent rotative motion relative thereto; a reaction plate having openings therethrough; a helical spring positioned between said reaction plate and said cylindrical side wall; a core depressor projection projecting from said reaction plate concentrically within said spring and adapted to contact and depress the valve core of a pneumatic tire valve when said helical spring is deformed in resilient deformation; piston means slidably positioned within said outer housing for reciprocation in said bore means at a location between said inner housing and the other end of said outer housing; spring means in said bore means and extending between said piston means and a portion of said outer housing for resiliently urging said piston means toward said inner housing; and a pressure gauge indicator element secured to, and movable with, said piston means, said pressure gauge indicator element projecting from said piston means away from said inner housing and toward said other end of the outer housing and movable through the opening therein.
Claim 2
Dependent Claim
261 words
A pressure indicator and inflation device comprising: an outer housing having bore means extending therethrough to openings at opposite ends of the outer housing, and having air passageway means in the internal wall thereof which defines said bore means; a resilient inner housing positioned slidably within said outer housing adjacent one end thereof in said bore means, said resilient inner housing being adapted for securement to the valve stem of a pneumatic tire, said inner housing comprising: a cylindrical side wall; and an end portion integrally formed with said cylindrical side wall and keyed to said outer housing to prevent rotative motion relative thereto; a reaction plate having openings therethrough; a helical spring positioned between said reaction plate and said cylindrical side wall; a core depressor projection projecting from said reaction plate concentrically within said spring and adapted to contact and depress the valve core of a pneumatic tire valve when said helical spring is deformed in resilient deformation; piston means slidably positioned within said outer housing for reciprocation in said bore means at a location between said inner housing and the other end of said outer housing; spring means in said bore means and extending between said piston means and a portion of said outer housing for resiliently urging said piston means toward said inner housing; and a pressure gauge indicator element secured to, and movable with, said piston means, said pressure gauge indicator element projecting from said piston means away from said inner housing and toward said other end of the outer housing and movable through the opening therein.
Claim 3
Dependent Claim
270 words
A pressure indicator and inflation device comprising: an outer housing having bore means extending therethrough to openings at opposite ends of the outer housing, and having air passageway means in the internal wall thereof which defines said bore means; a cylindrical resilient inner housing positioned slidably within said outer housing adjacent one end thereof in said bore means, and adapted for securement to the valve stem of a pneumatic tire, said inner housing comprising: a side wall; and an end portion connected to said side wall and having a hexagonally shaped outer surface engaging the inner wall of said outer housing; an apertured reaction plate; resilient means positioned between said reaction plate and said side wall; a core depressor projection carried on said reaction plate and projecting along the axis of the inner housing and adapted to contact and bias to an open position, a valve core of a valve stem secured to said end portion at a time when tHe resilient means is deformed in resilient deformation; piston means slidably positioned within said outer housing for reciprocation in said bore means at a location between said inner housing and the other end of said outer housing; spring means in said bore means and extending between said piston means and a portion of said outer housing for resiliently urging said piston means toward said inner housing; and a pressure gauge indicator element secured to and movable with said piston means, said pressure gauge indicator element projecting from said piston means away from said inner housing and toward said other end of the outer housing and movable through the opening therein.
Claim 4
Dependent Claim
270 words
A pressure indicator and inflation device comprising: an outer housing having bore means extending therethrough to openings at opposite ends of the outer housing, and having air passageway means in the internal wall thereof which defines said bore means; a cylindrical resilient inner housing positioned slidably within said outer housing adjacent one end thereof in said bore means, and adapted for securement to the valve stem of a pneumatic tire, said inner housing comprising: a side wall; and an end portion connected to said side wall and having a hexagonally shaped outer surface engaging the inner wall of said outer housing; an apertured reaction plate; resilient means positioned between said reaction plate and said side wall; a core depressor projection carried on said reaction plate and projecting along the axis of the inner housing and adapted to contact and bias to an open position, a valve core of a valve stem secured to said end portion at a time when tHe resilient means is deformed in resilient deformation; piston means slidably positioned within said outer housing for reciprocation in said bore means at a location between said inner housing and the other end of said outer housing; spring means in said bore means and extending between said piston means and a portion of said outer housing for resiliently urging said piston means toward said inner housing; and a pressure gauge indicator element secured to and movable with said piston means, said pressure gauge indicator element projecting from said piston means away from said inner housing and toward said other end of the outer housing and movable through the opening therein.
Claim 5
Dependent Claim
295 words
A pressure indicator and inflation device comprising: an outer housing having bore means extending therethrough to openings at opposite ends of the outer housing, and having first air passageway means in the internal wall thereof which defines said bore means; a cylindrical resilient inner housing positioned slidably within said outer housing adjacent one end thereof in said bore means, and adapted for securement to the valve stem of a pneumatic tire, said inner housing having second air passageway means therethrough; an apertured reaction plate; resilient means positioned between said reaction plate and said inner housing; a core depressor projection carried on said reaction plate and projecting along the axis of the inner housing and adapted to contact and bias to an open position a valve core of a valve stem secured to said end portion at a time when the resilient means is deformed in resilient deformation; piston means slidably positioned within said outer housing for reciprocation in said bore means at a location between said inner housing and the other end of said outer housing, said piston means comprising: an annular plate; a seal retainer plate; a connector neck interconnecting said annular plate and seal retainer plate; and an annular O-ring seal positioned around said connector neck and sealingly engaging the internal wall of said outer housing defining said bore means; spring means in said bore means and extending between said piston means and a portion of said outer housing for resiliently urging said piston means toward said inner housing; and a pressure gauge indicator element secured to, and movable with, said piston means, said pressure gauge indicator element projecting from said piston means away from said inner housing and toward said other end of the outer housing and movable through the opening therein.
Claim 6
Dependent Claim
295 words
A pressure indicator and inflation device comprising: an outer housing having bore means extending therethrough to openings at opposite ends of the outer housing, and having first air passageway means in the internal wall thereof which defines said bore means; a cylindrical resilient inner housing positioned slidably within said outer housing adjacent one end thereof in said bore means, and adapted for securement to the valve stem of a pneumatic tire, said inner housing having second air passageway means therethrough; an apertured reaction plate; resilient means positioned between said reaction plate and said inner housing; a core depressor projection carried on said reaction plate and projecting along the axis of the inner housing and adapted to contact and bias to an open position a valve core of a valve stem secured to said end portion at a time when the resilient means is deformed in resilient deformation; piston means slidably positioned within said outer housing for reciprocation in said bore means at a location between said inner housing and the other end of said outer housing, said piston means comprising: an annular plate; a seal retainer plate; a connector neck interconnecting said annular plate and seal retainer plate; and an annular O-ring seal positioned around said connector neck and sealingly engaging the internal wall of said outer housing defining said bore means; spring means in said bore means and extending between said piston means and a portion of said outer housing for resiliently urging said piston means toward said inner housing; and a pressure gauge indicator element secured to, and movable with, said piston means, said pressure gauge indicator element projecting from said piston means away from said inner housing and toward said other end of the outer housing and movable through the opening therein.
References Cited (Backward Citations)
US3592218A
Cited
US3720224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |