US3556544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ski pole of adjustable length
Assignee: Individual
•
Filing: 1968-10-23
•
Granted: 1971-01-19
•
Expires: 1988-10-23
Abstract
Abstract A ski pole of adjustable length with two telescopic tubular pole sections which may be axially locked against each other by means of a clamping element. The clamping element is a pressure element of nonmetallic material, the cross-sectional area of which is undivided and may be increased by reducing the axial length of the pressure element. A surface of the pressure element can directly engage the wall surface of the tubular pole section slidably disposed with respect to the pressure element and the materials of the pole section and the pressure element being so paired that a high coefficient of friction is attained. On the other hand, a tightly confined liquid can be used for the pressure element. In order to reduce the axial length of the pressure element, a rod may be provided which pushes against one end of the pressure element which, with its other end, bears against a retainer which is axially fixed with respect to the surrounding tubular pole section.
Inventors
- 👤 Norbert Hauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:31
CPC Classifications
A; A63; A63C; A63C11/00; A63C11/22; A63C11/221; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T403/70; Y10T403/7047
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
218 words
Longitudinally adjustable ski pole with two telescopically displaceable, tubular pole sections which may be axially Locked against each other by means of a pressure element made of a material having the elasticity of rubber, which element can be enlarged in cross-sectional area by reducing the axial length thereof, wherein the outer surface of the pressure element engages directly the wall surface of the tubular pole section, which is slidably disposed with respect to the pressure element, and a rod being provided for reducing the axial length of the pressure element, which rod pushes against one end of the pressure element so as to exert a force in the direction toward the pressure element and the other end of the pressure element bearing against a retainer, characterized in that the retainer may be axially fixed with respect to the surrounding tubular pole section, the wall of the inner tubular pole section associated with the tip of the ski pole being disposed between the outer tubular pole section and the pressure element, the materials for the inner pole section and for the pressure element being so paired as to achieve a high coefficient of friction, and a scraper being secured to the end of the outer tube section and covering the gap between the outer and inner tubular pole sections.
Claim 2
Dependent Claim
218 words
Longitudinally adjustable ski pole with two telescopically displaceable, tubular pole sections which may be axially Locked against each other by means of a pressure element made of a material having the elasticity of rubber, which element can be enlarged in cross-sectional area by reducing the axial length thereof, wherein the outer surface of the pressure element engages directly the wall surface of the tubular pole section, which is slidably disposed with respect to the pressure element, and a rod being provided for reducing the axial length of the pressure element, which rod pushes against one end of the pressure element so as to exert a force in the direction toward the pressure element and the other end of the pressure element bearing against a retainer, characterized in that the retainer may be axially fixed with respect to the surrounding tubular pole section, the wall of the inner tubular pole section associated with the tip of the ski pole being disposed between the outer tubular pole section and the pressure element, the materials for the inner pole section and for the pressure element being so paired as to achieve a high coefficient of friction, and a scraper being secured to the end of the outer tube section and covering the gap between the outer and inner tubular pole sections.
Claim 3
Dependent Claim
40 words
A ski pole according to claim 1, characterized in that the pole grip assembly houses an eccentric which displaces said rod with respect to said retainer and the longitudinal position of said rod is adjustable with respect to said retainer.
Claim 4
Dependent Claim
32 words
A ski pole according to claim 2, characterized in that said rod is provided with an adjusting nut which seats against the surface of said eccentric facing away from said pressure element.
Claim 5
Dependent Claim
36 words
A ski pole according to claim 2, characterized in that the periphery of said eccentric deviates from the form of a true circle and in that the circumference of said eccentric bears against a thrust plate.
Claim 6
Dependent Claim
30 words
A ski pole according to claim 2, characterized in that said eccentric is so guided in the ski pole as to be movable in the axial direction of said rod.
Claim 7
Dependent Claim
19 words
A ski pole according to claim 2, characterized in that said adjusting nut may be adjusted from the outside.
Claim 8
Dependent Claim
53 words
A ski pole according to claim 2, characterized in that said eccentric and the surface of the recess in said pole grip assembly, which accommodates said eccentric are so designed that said rod will be forced into the position corresponding to the unloaded position of said pressure element when said eccentric is released.
Claim 9
Dependent Claim
39 words
A ski pole according to claim 7, characterized in that the end of the inner tubular pole section inside the outer tubular pole section is provided with a collar, said collar simultaneously serving as a stop and extension-limiting device.
Claim 10
Dependent Claim
45 words
A ski pole according to claim 1, characterized in that a component which may be screwed in the axial direction is disposed in a pole grip assembly, said component engaging the end of said rod for axially displacing said rod with respect to said retainer.
Claim 11
Dependent Claim
61 words
A ski pole according to claim 1, characterized in that said rod extends through the center of said pressure element and acts upon the end of said pressure element facing away from a pole grip assembly and in that said retainer is provided with a tube concentrically disposed with respect to said rod and secured to the surrounding tubular pole section.
Claim 12
Dependent Claim
28 words
A ski pole according to claim 10, characterized in that a spring is provided which forces said rod into the unloaded or released position of said pressure element.
Claim 13
Dependent Claim
29 words
A ski pole according to claim 1, characterized in that said scraper is provided with a scraper lip which contacts the outer surface of the inner tubular pole section.
Claim 14
Dependent Claim
28 words
A ski pole according to claim 12, characterized in that a scraper ring is provided in a chamber defined by the two tubular pole sections and said scraper.
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |