US1432613A - Dust cap - Google Patents

Dust cap Download PDF

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Publication number
US1432613A
US1432613A US480578A US48057821A US1432613A US 1432613 A US1432613 A US 1432613A US 480578 A US480578 A US 480578A US 48057821 A US48057821 A US 48057821A US 1432613 A US1432613 A US 1432613A
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United States
Prior art keywords
dust cap
cap
valve stem
extension
stem
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US480578A
Inventor
James R Orr
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Individual
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Individual
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Publication date
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Priority to US480578A priority Critical patent/US1432613A/en
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Publication of US1432613A publication Critical patent/US1432613A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C29/00—Arrangements of tyre-inflating valves to tyres or rims; Accessories for tyre-inflating valves, not otherwise provided for
    • B60C29/06—Accessories for tyre-inflating valves, e.g. housings, guards, covers for valve caps, locks, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C29/00—Arrangements of tyre-inflating valves to tyres or rims; Accessories for tyre-inflating valves, not otherwise provided for
    • B60C29/06—Accessories for tyre-inflating valves, e.g. housings, guards, covers for valve caps, locks, not otherwise provided for
    • B60C29/066—Valve caps

Definitions

  • This invention is a dust cap adapted to be employed in connection with a valve stem such as is used upon a pneumatic tire.
  • the invention provides a dust cap which may be readily slipped over a valve stem and automatically locked against displacement, while permitting of ready release of the loclring means when it is desired to re move the dust cap.
  • the invention also provides a yieldable plug within the dust cap which is automatically pressed over the end of the valve stem when the dust cap is in position in order to prevent leakage tl'irough the valve stem.
  • FIG. 1 is a perspective view of a dust cap constructed in accordance with the invention.
  • Fig. 2 is a vertical section through such a dust cap, showing the same in position upon the valve stem.
  • the valve upon which the dust cap is received is shown at 1 and is provided with 'the usual threaded exterior 2.
  • the cap 3 is received loosely over the valve stem and a plug 4, which is preferably of rubber is received within the dust cap and is provided with a recessed lower end 5 adapted to fit over the end of the valve stem when the dust cap is in position.
  • the plug yield bly urged downwardly in the dust cap in order to tightly fit over the valve stems of the different lengths, and for this purpose a coil spring 6 is interposed between the base of the dust cap and the upper end of the plug.
  • a leaf spring 8 is fixed at one end as by a rivet 9 to the exterior oi the dust cap, and the free end of the leaf spring is provided with a lateral extension 10 which extends across the dust cap just beyond the end of the same.
  • This lateral extension is provided with an opening 11 through which the valve stem is received and the leaf spring is so arranged that the normal tendency thereof is to move away from the dust cap and shift the extension 10 so that the edge 12 of the opening 11 will bind against the threaded exterior of the valve stem.
  • This shifting tendency of extension 10 is limited by an ear 13 extending upwardly from the extension so "to bind against the dust cap when the gripping member has been so shifted to cause binding engagement with the valve stem.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)

Description

. R. ORR
DUST CAP.- APPIICATION FILED JUNE 27, I921.
Patented Oct. 17, 1922...
INVENTOR.
A TTORNEYj Patented @ct. 11?, 1%22 JAMES B. ORR, OF LOS ANGELES, CALIFORNIA.
DUST CAP.
Application filed June 27, 1921. Serial No. 480,578.
To all whom it may concern:
Be it known that 1, JAMES R. ORB, a citizen of the United'States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Dust Caps, 01 which the following is a specification.
This invention is a dust cap adapted to be employed in connection with a valve stem such as is used upon a pneumatic tire.
The invention provides a dust cap which may be readily slipped over a valve stem and automatically locked against displacement, while permitting of ready release of the loclring means when it is desired to re move the dust cap.
The invention also provides a yieldable plug within the dust cap which is automatically pressed over the end of the valve stem when the dust cap is in position in order to prevent leakage tl'irough the valve stem.
The invention will be readily understood from the following description of the accompanying drawings, in which Figure 1 is a perspective view of a dust cap constructed in accordance with the invention.
Fig. 2 is a vertical section through such a dust cap, showing the same in position upon the valve stem.
The valve upon which the dust cap is received is shown at 1 and is provided with 'the usual threaded exterior 2. The cap 3 is received loosely over the valve stem and a plug 4, which is preferably of rubber is received within the dust cap and is provided with a recessed lower end 5 adapted to fit over the end of the valve stem when the dust cap is in position. The plug yield bly urged downwardly in the dust cap in order to tightly fit over the valve stems of the different lengths, and for this purpose a coil spring 6 is interposed between the base of the dust cap and the upper end of the plug.
In order to retain the dust cap upon the valve stem a leaf spring 8 is fixed at one end as by a rivet 9 to the exterior oi the dust cap, and the free end of the leaf spring is provided with a lateral extension 10 which extends across the dust cap just beyond the end of the same. This lateral extension is provided with an opening 11 through which the valve stem is received and the leaf spring is so arranged that the normal tendency thereof is to move away from the dust cap and shift the extension 10 so that the edge 12 of the opening 11 will bind against the threaded exterior of the valve stem. This shifting tendency of extension 10 is limited by an ear 13 extending upwardly from the extension so "to bind against the dust cap when the gripping member has been so shifted to cause binding engagement with the valve stem.
By this arrangement it will be seen that when the dust cap is placed upon the valve stem the gripping member will automatically bind the parts against disengage ment, but that when it is desired to release the dust cap pressure exerted against leaf spring 8 null cause shifting of extension 10 in the opposite direction so to release the binding engagement of the edge 12 of opening 11 with the valve stem. As a consequence, the dust cap may then be readilv removed.
It will be apparent that various changes may be made in the construction as thus described without departing from the spirit of the invention,
What is claimed is:
1.. The combination with a cap for a stem, of a leaf spring fixed upon said cap at one end and having a lateral extension at its free end positioned across the open end of said cap, said extension having an opening adapted to receive said stem and normally yieldably urged laterally away from said cap so to bind against said stem at the sideof said opening.
2. The combination with a cap for a stem. of a leaf spring fixed upon said cap at one end and having a lateral extension at its free end positioned across the open end of said cap, said extension having an opening adapted to receive said stem and normally yieldably urged laterally away from said cap so as to bind against said stem at the side of said opening, and an abut ment element upon said extension for limiting the lateral shift of the same into binding position.
In testimony whereof I have signed my name to this specification.
JAMES R. ORR.
US480578A 1921-06-27 1921-06-27 Dust cap Expired - Lifetime US1432613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US480578A US1432613A (en) 1921-06-27 1921-06-27 Dust cap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US480578A US1432613A (en) 1921-06-27 1921-06-27 Dust cap

Publications (1)

Publication Number Publication Date
US1432613A true US1432613A (en) 1922-10-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
US480578A Expired - Lifetime US1432613A (en) 1921-06-27 1921-06-27 Dust cap

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3709261A (en) * 1970-09-10 1973-01-09 Global Marine Inc Thread protector for threaded pipe section ends or the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3709261A (en) * 1970-09-10 1973-01-09 Global Marine Inc Thread protector for threaded pipe section ends or the like

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