US3910221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-theft device
Assignee: Individual
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Filing: 1974-04-15
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Granted: 1975-10-07
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Expires: 1994-04-15
Abstract
Abstract A device, for discouraging the theft of vehicles having pneumatic tires, which can be secured on the valve stem of the tire instead of the usual dust cap and which has a normal condition in which the vehicle can be freely used. When desired the device can be set to a ready condition in which it cannot be removed from the valve stem, and the vehicle left unattended. Upon his return to the vehicle the owner can readily reset the device to normal. Any unauthorized use of the vehicle, however, actuates the device to an alarm condition in which air is allowed to pass from the tire, sounding an acoustical alarm and disabling the vehicle. Upon recovery of a misappropriated vehicle, the device may easily be once more restored to its normal condition.
Inventors
- 👤 Robert L Aske
- 👤 Leonard E Aske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:48
CPC Classifications
B; B60; B60R; B60R25/00; B60R25/01; B60R25/09; B60R25/096; B60R25/10; B60R25/104; B62; B62H; B62H5/00; B62H5/20; B60R25/1003
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
132 words
An anti-theft device for application to the valve stem of a vehicle tire comprising, in combination: a hollow housing closed at a first end by an air actuated sound producer and adapted at the second end to be applied to the valve stem; a piston movable longitudinally in said housing, having a pin extending in the direction of said second end thereof and A radially extending camming surface; means resiliently urging said piston toward said second end of said housing to an alarm position where said pin may depress the valve core; means normally preventing movement of said piston toward said alarm position; and further means including a weight centrifugally slidable on said housing for disabling the last-named means, whereby to initiate actuation of said sound producer and deflation of said tire.
Claim 2
Dependent Claim
132 words
An anti-theft device for application to the valve stem of a vehicle tire comprising, in combination: a hollow housing closed at a first end by an air actuated sound producer and adapted at the second end to be applied to the valve stem; a piston movable longitudinally in said housing, having a pin extending in the direction of said second end thereof and A radially extending camming surface; means resiliently urging said piston toward said second end of said housing to an alarm position where said pin may depress the valve core; means normally preventing movement of said piston toward said alarm position; and further means including a weight centrifugally slidable on said housing for disabling the last-named means, whereby to initiate actuation of said sound producer and deflation of said tire.
Claim 3
Dependent Claim
25 words
Apparatus according to claim 1 in which said weight is freely rotatable on said housing to prevent unauthorized removal of said device from said stem.
Claim 4
Dependent Claim
30 words
Apparatus according to claim 2 together with means operable to fix said weight to said housing, whereby to permit said device to be installed on and removed from said stem.
Claim 5
Dependent Claim
32 words
Apparatus according to claim 3 in which the locking means includes at least one plunger actuable into engagement with an aperture in said weight, together with cam means for actuating said plunger.
Claim 6
Dependent Claim
34 words
Apparatus according to claim 4 in which a pair of said plungers are actuable radially in openings in said housing, together with arcuate compression spring means resiliently urging said plungers against said cam means.
Claim 7
Dependent Claim
30 words
Apparatus according to claim 4 together with indicia carried by said housing and said weight for indicating when they are in proper alignment to enable operation of said actuating means.
Claim 8
Dependent Claim
22 words
Apparatus according to claim 1 together with means fixing said weight to said housing to prevent said weight from performing said disablement.
Claim 9
Dependent Claim
70 words
Apparatus according to claim 1 in which the second named means comprises at least one ball partially contained in an aperture in said housing and partially engaging said camming surface of said piston, and in which the further means includes a surface engaging said ball to prevent its movement through said aperture and a chamber axially displaced from said surface for receiving said ball after it passes through said aperture.
Claim 10
Dependent Claim
21 words
Apparatus according to claim 8 together with means for normally positioning said weight so that the first surface engages said ball.
Claim 11
Dependent Claim
14 words
Apparatus according to claim 1 together with means retaining said piston within said housing.
Claim 12
Dependent Claim
26 words
Apparatus according to claim 2 in which said weight is made up of at least two concentric portions capable of rotational and limited axial relative motion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |